Pyin-Oo-Lwin District, Mandalay Region, Myanmar (original) (raw)

ⓘ Actinolite

Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2

ⓘ Aegirine

Formula: NaFe3+Si2O6

ⓘ Aegirine var. Titanium-bearing Aegirine

Formula: Na(Fe,Ti)Si2O6

ⓘ Aegirine-augite

Formula: (NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6

ⓘ Albite

Formula: Na(AlSi3O8)

Localities: Reported from at least 6 localities in this region.

ⓘ Albite var. Andesine

Formula: (Na,Ca)[Al(Si,Al)Si2O8]

ⓘ Albite var. Cleavelandite

Formula: Na(AlSi3O8)

ⓘ Albite var. Oligoclase

Formula: (Na,Ca)[Al(Si,Al)Si2O8]

ⓘ Almandine

Formula: Fe2+3Al2(SiO4)3

Localities: Reported from at least 14 localities in this region.

ⓘ Altaite

Formula: PbTe

ⓘ Amblygonite

Formula: LiAl(PO4)F

Localities:

Ohngaing, Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Sakangyi, Kyauk-Pyat-That, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Htan-yan-sho, Pein-Pyit (Painpyit; Pyan Pyit), Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Ohn-bin-ywe-htwet (Coconut Tree mine), Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Kabaing (Ka-Pine; Khabine), Kyauk-Pyat-That, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ 'Amphibole Supergroup'

Formula: A B2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2

ⓘ Analcime

Formula: Na(AlSi2O6) · H2O

ⓘ Anatase

Formula: TiO2

Localities:

Tha-gyi-loo, Thurein-taung, Kyauk-Pyat-That, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Myan Gyi mine (Myaing-Gyi mine), Thurein-taung, Kyauk-Pyat-That, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ Andalusite

Formula: Al2(SiO4)O

Localities: Reported from at least 6 localities in this region.

ⓘ Andalusite var. Chiastolite

Formula: Al2(SiO4)O

ⓘ Andradite

Formula: Ca3Fe3+2(SiO4)3

ⓘ Anhydrite

Formula: CaSO4

ⓘ Ankerite

Formula: Ca(Fe2+,Mg)(CO3)2

ⓘ Anorthite

Formula: Ca(Al2Si2O8)

ⓘ Anorthite var. Labradorite

Formula: (Ca,Na)[Al(Al,Si)Si2O8]

ⓘ Antigorite

Formula: Mg3(Si2O5)(OH)4

ⓘ 'Apatite'

Formula: Ca5(PO4)3(Cl/F/OH)

Localities: Reported from at least 25 localities in this region.

ⓘ Aragonite

Formula: CaCO3

ⓘ Augite

Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6

ⓘ Augite var. Titanium-bearing Augite

Formula: (Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6

ⓘ 'Axinite Group'

ⓘ Baddeleyite

Formula: ZrO2

Localities:

Myan Gyi mine (Myaing-Gyi mine), Thurein-taung, Kyauk-Pyat-That, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Tha-gyi-loo, Thurein-taung, Kyauk-Pyat-That, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Wet-loo (Wetloo), Kyauk-Pyat-That, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ Baryte

Formula: BaSO4

References:

Giuliani, G., Dubessy, J., Banks, D. A., Lhomme, T., & Ohnenstetter, D. (2015). Fluid inclusions in ruby from Asian marble deposits: genetic implications. European Journal of Mineralogy, 27(3), 393-404.

ⓘ Beryl

Formula: Be3Al2(Si6O18)

Localities: Reported from at least 20 localities in this region.

ⓘ Beryl var. Aquamarine

Formula: Be3Al2Si6O18

Localities: Reported from at least 16 localities in this region.

ⓘ Beryl var. Caesium Beryl

Formula: Be3Al2(Si6O18)

ⓘ Beryl var. Goshenite

Formula: Be3Al2(Si6O18)

Localities: Reported from at least 14 localities in this region.

ⓘ Beryl var. Morganite

Formula: Be3Al2(Si6O18)

Localities:

Sakangyi pegmatites, Sakangyi, Kyauk-Pyat-That, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Pyingyi Taung (Pyin Gyi Taung), Male (Marle; Marla), Letpanhla, Singu Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ 'Biotite'

Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2

Localities:

Yet-Kan-Zin-Taung (Yetkansin Taung), Madaya Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Bawmar (Baw Mar mine), Kyatpyin North, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Singu-Tabeikkyin gold region, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ Bismite

Formula: Bi2O3

ⓘ Böhmite

Formula: AlO(OH)

ⓘ Brockite

Formula: (Ca,Th,Ce)PO4 · H2O

ⓘ Brucite

Formula: Mg(OH)2

ⓘ Calcite

Formula: CaCO3

Localities: Reported from at least 26 localities in this region.

ⓘ Cancrinite

Formula: (Na,Ca,◻)8(Al6Si6O24)(CO3,SO4)2 · 2H2O

ⓘ Cassiterite

Formula: SnO2

Localities: Reported from at least 6 localities in this region.

ⓘ Celestine

Formula: SrSO4

References:

Lin, Bihan, Li, Xingtong, Zhang, Longbo, Lai, Xiaojing, Zhang, Qian (2023) Gemological and Luminescence Characteristics of Taaffeites from Mogok, Myanmar. Minerals, 13 (3) 346 doi:10.3390/min13030346

ⓘ 'Chabazite'

ⓘ Chalcopyrite

Formula: CuFeS2

Localities: Reported from at least 7 localities in this region.

ⓘ 'Chlorite Group'

Localities: Reported from at least 6 localities in this region.

ⓘ Chondrodite

Formula: Mg5(SiO4)2F2

Localities: Reported from at least 6 localities in this region.

ⓘ Chrysoberyl

Formula: BeAl2O4

Localities: Reported from at least 15 localities in this region.

ⓘ Chrysoberyl var. Alexandrite

Formula: BeAl2O4

Localities:

Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Ohn-bin-ywe-htwet (Coconut Tree mine), Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Pingu-taung east, Kyatpyin Central, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Kyauk-sin (Rock Elephant), Kyatpyin North, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ 'Chrysoprase'

Localities:

Myasein Taung, Pyaung Gaung, Bernardmyo, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Zalat-taung, Bernardmyo, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ Clinohumite

Formula: Mg9(SiO4)4F2

ⓘ 'Clinopyroxene Subgroup'

References:

Myint Myat Phyo, Bieler, E., Franz, L., Balmer, W., Krzemnicki, M.S. (2019): Spinel from Mogok, Myanmar—A detailed inclusion study by Raman microspectroscopy and scanning electron microscopy. The Journal of Gemmology 36, 418-435. (as inclusions in spinel)

ⓘ Columbite-(Mn)

Formula: Mn2+Nb2O6

ⓘ 'Columbite-Tantalite'

ⓘ Cordierite

Formula: (Mg,Fe)2Al3(AlSi5O18)

Localities: Reported from at least 6 localities in this region.

ⓘ Cordierite var. Iolite

Formula: (Mg,Fe)2Al3(AlSi5O18)

Localities:

Chaung-gyi-ah-le-ywa, Chaung-gyi, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Ohn-bin-ywe-htwet (Coconut Tree mine), Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Myaw-pyet, Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Kabaing (Ka-Pine; Khabine), Kyauk-Pyat-That, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ Corundum

Formula: Al2O3

Localities: Reported from at least 131 localities in this region.

ⓘ Corundum var. Ruby

Formula: Al2O3

Localities: Reported from at least 117 localities in this region.

ⓘ Corundum var. Sapphire

Formula: Al2O3

Localities: Reported from at least 107 localities in this region.

ⓘ Corundum var. Star Ruby

Formula: Al2O3

Localities: Reported from at least 31 localities in this region.

ⓘ Corundum var. Star Sapphire

Formula: Al2O3

Localities: Reported from at least 20 localities in this region.

ⓘ Danburite

Formula: CaB2Si2O8

Localities: Reported from at least 14 localities in this region.

ⓘ Darrellhenryite ?

Formula: Na(Al2Li)Al6(Si6O18)(BO3)3(OH)3O

Description: Possibly from Momeik, but no further locality info given in paper.

ⓘ Dawsonite

Formula: NaAlCO3(OH)2

References:

Giuliani, G., Dubessy, J., Banks, D. A., Lhomme, T., & Ohnenstetter, D. (2015). Fluid inclusions in ruby from Asian marble deposits: genetic implications. European Journal of Mineralogy, 27(3), 393-404.

ⓘ Diaspore

Formula: AlO(OH)

Localities: Reported from at least 6 localities in this region.

ⓘ Dickite

Formula: Al2(Si2O5)(OH)4

References:

Soonthorntantikul, W., Vertriest, W., Raynaud-Flattot, V.L., Sangsawong, S., Atikarnsakul, U., Khowpong, Ch., Weeramonkhonlert, V. and Pardieu, V. (2017) An in-depth gemological study of blue sapphires from the Baw Mar mine (Mogok, Myanmar). Gemmological Institute of America Report, 87 pp. [https://www.gia.edu/doc/Gemological-Study-Blue-Sapphires-Baw-Mar-Mine-Mogok-Myanmar-GIA.pdf]

ⓘ Diopside

Formula: CaMgSi2O6

Localities: Reported from at least 34 localities in this region.

ⓘ Dolomite

Formula: CaMg(CO3)2

Localities: Reported from at least 8 localities in this region.

ⓘ Dravite

Formula: NaMg3Al6(Si6O18)(BO3)3(OH)3(OH)

Localities:

Ohngaing, Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Pyant Gyi mine (Pyan Gyi), Pein-Pyit (Painpyit; Pyan Pyit), Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Dattaw-pyant & Dattaw-chaung, Dattaw-taung (Dattaw hill), Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Tha-gyi-loo, Thurein-taung, Kyauk-Pyat-That, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ Edenite

Formula: NaCa2Mg5(Si7Al)O22(OH)2

Localities:

Pyant Gyi mine (Pyan Gyi), Pein-Pyit (Painpyit; Pyan Pyit), Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Ohn-bin-ywe-htwet (Coconut Tree mine), Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Dattaw-mid, Dattaw-taung (Dattaw hill), Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Laung-pyit mine, Dattaw-mid, Dattaw-taung (Dattaw hill), Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ 'Edenite-Pargasite Root Name Series'

Formula:

References:

Garnier, Virginie, Giuliani, Gaston, Ohnenstetter, Daniel, Fallick, Anthony E., Dubessy, Jean, Banks, David, Vinh, Hoàng Quang, Lhomme, Thérèse, Maluski, Henri, Pêcher, Arnaud, Bakhsh, Kausar Allah, Long, Pham Van, Trinh, Phan Trong, Schwarz, Dietmar (2008) Marble-hosted ruby deposits from Central and Southeast Asia: Towards a new genetic model. Ore Geology Reviews, 34 (1) 169-191 doi:10.1016/j.oregeorev.2008.03.003

ⓘ Ekanite

Formula: Ca2ThSi8O20

ⓘ Elbaite

Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)

Localities: Reported from at least 13 localities in this region.

ⓘ Elbaite var. Chromium-bearing Elbaite

Formula: Na(Li1.5Al1.5)(Al,Cr)6(Si6O18)(BO3)3(OH)3(OH)

ⓘ Enstatite

Formula: Mg2Si2O6

Localities: Reported from at least 6 localities in this region.

ⓘ Epidote

Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)

ⓘ Euclase

Formula: BeAl(SiO4)(OH)

ⓘ Fayalite

Formula: Fe2+2SiO4

ⓘ 'Fayalite-Forsterite Series'

ⓘ 'Feldspar Group'

Localities:

Ohngaing, Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Bawmar (Baw Mar mine), Kyatpyin North, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Singu Plateau of Lavas, Singu Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ Fergusonite-(Y)

Formula: YNbO4

ⓘ Ferrohögbomite-2N2S

Formula: [(Fe2+,Mg,Zn,Al)3(Al,Ti,Fe3+)8O15(OH)]2

ⓘ Fluorapatite

Formula: Ca5(PO4)3F

Localities:

Ohngaing, Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Ohn-bin-ywe-htwet (Coconut Tree mine), Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Pyant Gyi mine (Pyan Gyi), Pein-Pyit (Painpyit; Pyan Pyit), Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Pein-Pyit (Painpyit; Pyan Pyit), Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ Fluorite

Formula: CaF2

Localities: Reported from at least 13 localities in this region.

ⓘ Fluoro-edenite

Formula: NaCa2Mg5(Si7Al)O22F2

ⓘ Fluorophlogopite

Formula: KMg3(Si3Al)O10F2

ⓘ 'Fluor-uvite-Uvite Series'

ⓘ Foitite

Formula: ◻(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3(OH)

ⓘ Forsterite

Formula: Mg2SiO4

Localities: Reported from at least 10 localities in this region.

Habit: peridots may be formed as individual euhedral to subhedral crystals with pinacoid, prism and pyramid faces, as well as in multiple clusters pointing towards the center of the pocket.

Colour: yellowish green to green

ⓘ Forsterite var. Peridot

Formula: Mg2SiO4

Localities: Reported from at least 6 localities in this region.

Habit: peridots may be formed as individual euhedral to subhedral crystals with pinacoid, prism and pyramid faces, as well as in multiple clusters pointing towards the center of the pocket.

Colour: yellowish green to green

ⓘ Galena

Formula: PbS

Localities:

Kwin Thone Ze (Kwinthonze mine), Thabeikkyin Township (Tha Pate Kyin Township), Pyin-Oo-Lwin District, Mandalay Region, Myanmar
CG-1 prospect, Thabeikkyin Township (Tha Pate Kyin Township), Pyin-Oo-Lwin District, Mandalay Region, Myanmar
KD-1 prospect, Singu Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
KD-2 prospect, Singu Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
YD-2 prospect, Thabeikkyin Township (Tha Pate Kyin Township), Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ 'Garnet Group'

Formula: X3Z2(SiO4)3

Localities: Reported from at least 8 localities in this region.

ⓘ Geikielite

Formula: MgTiO3

References:

Myint Myat Phyo, Bieler, E., Franz, L., Balmer, W., Krzemnicki, M.S. (2019): Spinel from Mogok, Myanmar—A detailed inclusion study by Raman microspectroscopy and scanning electron microscopy. The Journal of Gemmology 36, 418-435. (as inclusions in spinel)

ⓘ Gibbsite

Formula: Al(OH)3

References:

Soonthorntantikul, W., Vertriest, W., Raynaud-Flattot, V.L., Sangsawong, S., Atikarnsakul, U., Khowpong, Ch., Weeramonkhonlert, V. and Pardieu, V. (2017) An in-depth gemological study of blue sapphires from the Baw Mar mine (Mogok, Myanmar). Gemmological Institute of America Report, 87 pp. [https://www.gia.edu/doc/Gemological-Study-Blue-Sapphires-Baw-Mar-Mine-Mogok-Myanmar-GIA.pdf]

ⓘ 'Glass'

ⓘ Goethite

Formula: α-Fe3+O(OH)

Localities:

Shwe-pyi-aye, Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Bawmar (Baw Mar mine), Kyatpyin North, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ Gold

Formula: Au

Localities: Reported from at least 11 localities in this region.

ⓘ Gold var. Electrum

Formula: (Au,Ag)

Localities:

CG-1 prospect, Thabeikkyin Township (Tha Pate Kyin Township), Pyin-Oo-Lwin District, Mandalay Region, Myanmar
CG-2 prospect, Thabeikkyin Township (Tha Pate Kyin Township), Pyin-Oo-Lwin District, Mandalay Region, Myanmar
KD-2 prospect, Singu Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
YD-2 prospect, Thabeikkyin Township (Tha Pate Kyin Township), Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ Graphite

Formula: C

Localities: Reported from at least 13 localities in this region.

ⓘ Grossular

Formula: Ca3Al2(SiO4)3

Localities:

Pyant Gyi mine (Pyan Gyi), Pein-Pyit (Painpyit; Pyan Pyit), Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Htan-yan-sho, Pein-Pyit (Painpyit; Pyan Pyit), Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Pazun-seik (Pazon-Seit), Kyauk-Pyat-That, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Yet-Kan-Zin-Taung (Yetkansin Taung), Madaya Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Sakangyi, Kyauk-Pyat-That, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ Grossular var. Hessonite

Formula: Ca3Al2(SiO4)3

ⓘ Gypsum

Formula: CaSO4 · 2H2O

ⓘ 'Hackmanite'

Formula: Na8Al6Si6O24(Cl2,S)

Localities: Reported from at least 8 localities in this region.

ⓘ Halite

Formula: NaCl

References:

Myint Myat Phyo, Bieler, E., Franz, L., Balmer, W., Krzemnicki, M.S. (2019): Spinel from Mogok, Myanmar—A detailed inclusion study by Raman microspectroscopy and scanning electron microscopy. The Journal of Gemmology 36, 418-435. (as inclusions in spinel)

ⓘ Hambergite

Formula: Be2(BO3)(OH)

References:

Peretti, A., Peretti, F., Tun, N.L., Günther, D., Hametner. K., Bieri, W., Reusser, E., Kadiyski, M., Armbruster, T. (2007): Gem quality johachidolite: occurrence, chemical composition and crystal structure. Contrib. Gemol., 2007 (5), 1-53.

ⓘ Hauerite

Formula: MnS2

References:

Gao, Y., He, M., Sun, X., Zhen, C., Li, H., Wei, X., & Zhao, Y. (2023). Jedi Spinel from Man Sin, Myanmar: Color, Inclusion, and Chemical Features. Crystals, 13(1), 103.

ⓘ Haüyne

Formula: Na3Ca(Si3Al3)O12(SO4)

Localities:

Pyant Gyi mine (Pyan Gyi), Pein-Pyit (Painpyit; Pyan Pyit), Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Yebu-thapanbin-kyar (Thabapin), Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ Hematite

Formula: Fe2O3

Localities:

Myan Gyi mine (Myaing-Gyi mine), Thurein-taung, Kyauk-Pyat-That, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Bawpadan, Marble Ark, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ Herderite

Formula: CaBe(PO4)F

Localities:

Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Sakangyi pegmatites, Sakangyi, Kyauk-Pyat-That, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Pan-taw (Pandaw), Kyatpyin North, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

Pazun-seik (Pazon-Seit), Kyauk-Pyat-That, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

(more information)

ⓘ Hessite

Formula: Ag2Te

ⓘ Hibonite

Formula: CaAl12O19

Localities:

Tha-Yet-Pin-Pyint, Kyauk-Pyat-That, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Man-taw-bin, Kyauk-Pyat-That, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ 'Hornblende Root Name Group'

Formula: ◻Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2

Localities: Reported from at least 8 localities in this region.

Colour: Greenish

ⓘ Humite

Formula: Mg7(SiO4)3F2

ⓘ 'Humite Group'

ⓘ Ilmenite

Formula: Fe2+TiO3

Localities:

Myan Gyi mine (Myaing-Gyi mine), Thurein-taung, Kyauk-Pyat-That, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Bawmar (Baw Mar mine), Kyatpyin North, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Ohngaing, Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ Jadeite

Formula: Na(Al,Fe3+)Si2O6

ⓘ Jeremejevite

Formula: Al6(BO3)5(F,OH)3

Localities: Reported from at least 6 localities in this region.

ⓘ Johachidolite

Formula: CaAlB3O7

Localities:

Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Pyant Gyi mine (Pyan Gyi), Pein-Pyit (Painpyit; Pyan Pyit), Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Pein-Pyit (Painpyit; Pyan Pyit), Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ Johnkoivulaite (TL)

Formula: Cs[Be2B]Mg2Si6O18

ⓘ Joséite-A

Formula: Bi4TeS2

ⓘ Kaolinite

Formula: Al2(Si2O5)(OH)4

References:

Soonthorntantikul, W., Vertriest, W., Raynaud-Flattot, V.L., Sangsawong, S., Atikarnsakul, U., Khowpong, Ch., Weeramonkhonlert, V. and Pardieu, V. (2017) An in-depth gemological study of blue sapphires from the Baw Mar mine (Mogok, Myanmar). Gemmological Institute of America Report, 87 pp. [https://www.gia.edu/doc/Gemological-Study-Blue-Sapphires-Baw-Mar-Mine-Mogok-Myanmar-GIA.pdf]

ⓘ 'K Feldspar'

Localities:

Bawmar (Baw Mar mine), Kyatpyin North, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Chin-thae Taung (Chin-theit Taung), Marble Ark, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Man-pyan-taung, Marble Ark, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
CG-3 prospect, Thabeikkyin Township (Tha Pate Kyin Township), Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ 'K Feldspar var. Adularia'

Formula: KAlSi3O8

ⓘ Kornerupine

Formula: Mg3Al6(Si,Al,B)5O21(OH)

Localities:

Ohngaing, Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Kyauk-wa, Chaung-gyi, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Pyant Gyi mine (Pyan Gyi), Pein-Pyit (Painpyit; Pyan Pyit), Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ Kyawthuite (TL)

Formula: Bi3+Sb5+O4

Type Locality:

ⓘ Lazurite

Formula: Na7Ca(Al6Si6O24)(SO4)(S3) · H2O

Localities:

Pyant Gyi mine (Pyan Gyi), Pein-Pyit (Painpyit; Pyan Pyit), Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Yebu-thapanbin-kyar (Thabapin), Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Lazurite mine, Gwe-kyi (Gwe-gyi?), Kyauk-Pyat-That, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ 'Limonite'

References:

Myint Myat Phyo, Bieler, E., Franz, L., Balmer, W., Krzemnicki, M.S. (2019): Spinel from Mogok, Myanmar—A detailed inclusion study by Raman microspectroscopy and scanning electron microscopy. The Journal of Gemmology 36, 418-435. (as inclusions in spinel)

ⓘ Lizardite

Formula: Mg3(Si2O5)(OH)4

ⓘ Magnesiotaaffeite-2N’2S

Formula: Mg3Al8BeO16

Localities:

Ohngaing, Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Kyauk-sin (Rock Elephant), Kyatpyin North, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Chaung-gyi, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

Fluorescence: Taaffeites have specific characteristic fluorescence. The fluorescence colors under LWUV can be divided into four categories: orange‐red, pink, green, and blue‐white. Using two‐dimensional fluorescence spectra, it was found that the samples with orange‐red and pink fluorescence had two very strong peaks at 686 nm and 690 nm in the red region. Samples showing green and blue‐white fluorescence had strong peaks at 439 nm and 464 nm in the blue region, a relatively weak peak in the green region, and two very weak peaks at 686 nm and 690 nm in the red region. When combined with the chemical composition data from LA‐ICP‐MS, this suggests that Cr3+ is the activator of the orange‐red and pink fluorescence, Mn2+ is responsible for the green fluorescence, and Fe inhibits the generation of fluorescence. All of them revealed inert to bright pink fluorescence under SWUV light.

ⓘ 'Magnesiotaaffeite-2N’2S2'

Formula: Mg3BeAl8O16

ⓘ Magnesiotaaffeite-6N’3S

Formula: Mg2BeAl6O12

ⓘ Magnesite

Formula: MgCO3

ⓘ Magnetite

Formula: Fe2+Fe3+2O4

Localities:

Myasein Taung, Pyaung Gaung, Bernardmyo, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Ohngaing, Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Pyaung Gaung, Bernardmyo, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Singu Plateau of Lavas, Singu Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ Magnetite var. Ishkulite

Formula: Fe2+(Fe3+,Cr3+)2O4

ⓘ Malachite

Formula: Cu2(CO3)(OH)2

ⓘ Marcasite

Formula: FeS2

Localities:

Bawpadan, Marble Ark, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Mansin/Thet-kachan (Man Sin; Mansi; Mance/Thet-kachan), Pein-Pyit (Painpyit; Pyan Pyit), Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ Margarite

Formula: CaAl2(Al2Si2O10)(OH)2

ⓘ Meionite

Formula: Ca4Al6Si6O24CO3

ⓘ 'Mica Group'

Localities:

Myan Gyi mine (Myaing-Gyi mine), Thurein-taung, Kyauk-Pyat-That, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Bawmar (Baw Mar mine), Kyatpyin North, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ Microcline

Formula: K(AlSi3O8)

Localities: Reported from at least 10 localities in this region.

ⓘ Microcline var. Amazonite

Formula: K(AlSi3O8)

Localities:

Pan-taw (Pandaw), Kyatpyin North, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Sakangyi, Kyauk-Pyat-That, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Pazun-seik (Pazon-Seit), Kyauk-Pyat-That, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Sakangyi pegmatites, Sakangyi, Kyauk-Pyat-That, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Sinkwa, Kyauk-Pyat-That, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ Molybdenite

Formula: MoS2

ⓘ Monazite-(Ce)

Formula: Ce(PO4)

ⓘ Monazite-(Gd)

Formula: Gd(PO4)

ⓘ Montebrasite

Formula: LiAl(PO4)(OH)

Localities:

Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Ohn-bin-ywe-htwet (Coconut Tree mine), Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Pyant Gyi mine (Pyan Gyi), Pein-Pyit (Painpyit; Pyan Pyit), Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Kabaing (Ka-Pine; Khabine), Kyauk-Pyat-That, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ 'Moonstone'

Localities: Reported from at least 32 localities in this region.

ⓘ Muscovite

Formula: KAl2(AlSi3O10)(OH)2

Localities: Reported from at least 10 localities in this region.

ⓘ Muscovite var. Fuchsite

Formula: K(Al,Cr)3Si3O10(OH)2

Localities: Reported from at least 6 localities in this region.

ⓘ Norbergite

Formula: Mg3(SiO4)F2

Description: Specimens labelled "Norbergite" coming from Oakssaung Hill has showed by analysis to be chondrodite or clinohumite. See messageboard at http://www.mindat.org/mesg-7-227088.html

ⓘ Orthoclase

Formula: K(AlSi3O8)

Localities: Reported from at least 11 localities in this region.

ⓘ 'Orthopyroxene Subgroup'

ⓘ Oxycalciopyrochlore

Formula: Ca2Nb2O6O

ⓘ Oxycalciopyrochlore var. Titan-uranoan Oxycalciopyrochlore

Formula: (Ca,U,Na)2(Nb,Ti,Ta)2O6(O,OH)

ⓘ Painite (TL)

Formula: CaZrAl9(BO3)O15

Localities: Reported from at least 10 localities in this region.

ⓘ Pargasite

Formula: NaCa2(Mg4Al)(Si6Al2)O22(OH)2

Localities:

Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Pyant Gyi mine (Pyan Gyi), Pein-Pyit (Painpyit; Pyan Pyit), Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Le-U-le-taw, Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Ohn-bin-ywe-htwet (Coconut Tree mine), Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Myan Gyi mine (Myaing-Gyi mine), Thurein-taung, Kyauk-Pyat-That, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ Periclase

Formula: MgO

References:

Myint Myat Phyo, Bieler, E., Franz, L., Balmer, W., Krzemnicki, M.S. (2019): Spinel from Mogok, Myanmar—A detailed inclusion study by Raman microspectroscopy and scanning electron microscopy. The Journal of Gemmology 36, 418-435. (as inclusions in spinel)

ⓘ Petzite

Formula: Ag3AuTe2

ⓘ Phenakite ?

Formula: Be2SiO4

Description: Never confirmed. All crystals probably come from Ketchel village.

ⓘ Phlogopite

Formula: KMg3(AlSi3O10)(OH)2

Localities: Reported from at least 16 localities in this region.

ⓘ 'Plagioclase'

Formula: (Na,Ca)[(Si,Al)AlSi2]O8

ⓘ 'Polylithionite-Trilithionite Series'

ⓘ Poudretteite

Formula: K◻2Na2B3[Si12O30]

Localities:

Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Ohn-bin-ywe-htwet (Coconut Tree mine), Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Pyant Gyi mine (Pyan Gyi), Pein-Pyit (Painpyit; Pyan Pyit), Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Kyauk-sin (Rock Elephant), Kyatpyin North, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

Colour: colourless, light pink

Fluorescence: no

Description: Gem quality cut stone, allegedly from Mogok, featured in travel article, but there is no firm evidence it really originated there. 10/2009: According to information of different gem dealers the material was initially analysed by the AIGS- and GIT-labs in Bangkok on RI and SG. Fragments were now investigated in Vienna with EDS and by single crystal diffractometry and found to be Poudretteite.

ⓘ Pyrite

Formula: FeS2

Localities: Reported from at least 33 localities in this region.

ⓘ Pyroaurite

Formula: Mg6Fe3+2(OH)16[CO3] · 4H2O

ⓘ 'Pyrochlore Group'

Formula: A2Nb2(O,OH)6Z

ⓘ 'Pyrochlore Group var. Zero valent dominant member of Pyrochlore Group'

Formula: A2Nb2(O,OH)6Z

ⓘ Pyrope

Formula: Mg3Al2(SiO4)3

Description: The internet reference has no data and appears to be referencing a small percentage of "pyrope" in a chemical analyses in light of the other garnets also reported.

ⓘ 'Pyroxene Group'

Formula: ADSi2O6

References:

Wu, Jinlin, Sun, Xueying, Ma, Hong, Ning, Peiying, Tang, Na, Ding, Ting, Li, Huihuang, Zhang, Tianyang, Ma, Ying (2023) Purple-Violet Gem Spinel from Tanzania and Myanmar: Inclusion, Spectroscopy, Chemistry, and Color. Minerals, 13 (2) 226 doi:10.3390/min13020226

ⓘ Pyrrhotite

Formula: Fe1-xS

Localities: Reported from at least 10 localities in this region.

ⓘ Quartz

Formula: SiO2

Localities: Reported from at least 59 localities in this region.

ⓘ Quartz var. Amethyst

Formula: SiO2

Localities: Reported from at least 6 localities in this region.

ⓘ Quartz var. Chalcedony

Formula: SiO2

ⓘ Quartz var. Citrine

Formula: SiO2

Localities:

Ah-chauk-taw, Bernardmyo, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Kabaing (Ka-Pine; Khabine), Kyauk-Pyat-That, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ Quartz var. Rock Crystal

Formula: SiO2

Localities:

Pazun-seik (Pazon-Seit), Kyauk-Pyat-That, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Pyingyi Taung (Pyin Gyi Taung), Male (Marle; Marla), Letpanhla, Singu Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Htan-saing, Bernardmyo, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Thé-dut-sho-Kyatpyin (Night-bird), Marble Ark, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Man-pyan-taung, Marble Ark, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ Quartz var. Rose Quartz

Formula: SiO2

ⓘ Quartz var. Rutilated Quartz

Formula: SiO2

ⓘ Quartz var. Smoky Quartz

Formula: SiO2

Localities: Reported from at least 8 localities in this region.

ⓘ Rhodochrosite

Formula: MnCO3

Localities:

Pan-taw (Pandaw), Kyatpyin North, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

Pazun-seik (Pazon-Seit), Kyauk-Pyat-That, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

(more information)

ⓘ Rutile

Formula: TiO2

Localities: Reported from at least 12 localities in this region.

ⓘ Sadanagaite

Formula: {Na}{Ca2}{Mg3Al2}(Si5Al3O22)(OH)2

Description: Chemical composition: (Na0.82 K0.17) (Ca1.95 Na0.05) (Mg3.36 Fe2+0.23 Al1.20 Cr3+0.07 Ti4+0.16) (Si5.47 Al2.53) O22 [(OH)1.58 F0.42] Analysed specimen originates from Dattaw mine.

ⓘ Sanidine

Formula: K(AlSi3O8)

Localities:

Ohn-bin-ywe-htwet (Coconut Tree mine), Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Pyant Gyi mine (Pyan Gyi), Pein-Pyit (Painpyit; Pyan Pyit), Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Lin-yaung-chi (Bright Light Rays), Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ 'Scapolite'

Localities: Reported from at least 34 localities in this region.

ⓘ Scheelite

Formula: Ca(WO4)

Localities: Reported from at least 7 localities in this region.

ⓘ Schorl

Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)

Localities: Reported from at least 27 localities in this region.

ⓘ Serendibite

Formula: Ca4[Mg6Al6]O4[Si6B3Al3O36]

Localities:

Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Lin-yaung-chi (Bright Light Rays), Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Shwe-pyi-aye, Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Ohngaing, Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ Shortite

Formula: Na2Ca2(CO3)3

References:

Giuliani, G., Dubessy, J., Banks, D. A., Lhomme, T., & Ohnenstetter, D. (2015). Fluid inclusions in ruby from Asian marble deposits: genetic implications. European Journal of Mineralogy, 27(3), 393-404.

ⓘ Siderite

Formula: FeCO3

ⓘ Sillimanite

Formula: Al2(SiO4)O

Localities: Reported from at least 10 localities in this region.

ⓘ Sillimanite var. Fibrolite

Formula: Al2(SiO4)O

Localities:

Pyant Gyi mine (Pyan Gyi), Pein-Pyit (Painpyit; Pyan Pyit), Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Pein-pyit-le-taw, Pein-Pyit (Painpyit; Pyan Pyit), Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Htan-yan-sho, Pein-Pyit (Painpyit; Pyan Pyit), Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Ohn-bin-ywe-htwet (Coconut Tree mine), Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Myaw-pyet, Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ Sinhalite

Formula: MgAl(BO4)

Localities: Reported from at least 6 localities in this region.

ⓘ Sodalite

Formula: Na4(Si3Al3)O12Cl

Localities: Reported from at least 10 localities in this region.

ⓘ 'Sodalite Group'

ⓘ Spessartine

Formula: Mn2+3Al2(SiO4)3

Localities:

Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Lwam-taung, Bernardmyo, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Pan-taw (Pandaw), Kyatpyin North, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

Pazun-seik (Pazon-Seit), Kyauk-Pyat-That, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

(more information)

ⓘ Sphalerite

Formula: ZnS

Localities: Reported from at least 7 localities in this region.

ⓘ Spinel

Formula: MgAl2O4

Localities: Reported from at least 104 localities in this region.

ⓘ Spinel var. Jedi spinel

References:

Gao, Y., He, M., Sun, X., Zhen, C., Li, H., Wei, X., & Zhao, Y. (2023). Jedi Spinel from Man Sin, Myanmar: Color, Inclusion, and Chemical Features. Crystals, 13(1), 103.

ⓘ Spinel var. Pleonaste

Formula: (Mg,Fe)Al2O4

ⓘ Srilankite

Formula: ZrTi2O6

ⓘ Stibiotantalite

Formula: Sb(Ta,Nb)O4

ⓘ Stibnite

Formula: Sb2S3

References:

Gao, Y., He, M., Sun, X., Zhen, C., Li, H., Wei, X., & Zhao, Y. (2023). Jedi Spinel from Man Sin, Myanmar: Color, Inclusion, and Chemical Features. Crystals, 13(1), 103.

ⓘ Sulphur

Formula: S8

Localities:

Dan-dagu-taung, Marble Ark, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Thé-dut-sho-Kyatpyin (Night-bird), Marble Ark, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Mansin/Thet-kachan (Man Sin; Mansi; Mance/Thet-kachan), Pein-Pyit (Painpyit; Pyan Pyit), Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ 'Taaffeite Group'

ⓘ Talc

Formula: Mg3Si4O10(OH)2

ⓘ Tellurite

Formula: TeO2

ⓘ Tellurobismuthite

Formula: Bi2Te3

Localities:

CG-1 prospect, Thabeikkyin Township (Tha Pate Kyin Township), Pyin-Oo-Lwin District, Mandalay Region, Myanmar
CG-2 prospect, Thabeikkyin Township (Tha Pate Kyin Township), Pyin-Oo-Lwin District, Mandalay Region, Myanmar
CG-3 prospect, Thabeikkyin Township (Tha Pate Kyin Township), Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ Tetradymite

Formula: Bi2Te2S

ⓘ Thorianite

Formula: ThO2

ⓘ Thorianite var. Uranothorianite

Formula: (Th,U)O2

ⓘ 'Thorianite-Uraninite Series'

Formula: ThO2 - UO2

References:

Peretti, A., Peretti, F., Tun, N.L., Günther, D., Hametner. K., Bieri, W., Reusser, E., Kadiyski, M., Armbruster, T. (2007): Gem quality johachidolite: occurrence, chemical composition and crystal structure. Contrib. Gemol., 2007 (5), 1-53.

ⓘ Thorite

Formula: Th(SiO4)

Localities: Reported from at least 7 localities in this region.

ⓘ Thorutite

Formula: (Th,U,Ca)Ti2(O,OH)6

ⓘ Titanite

Formula: CaTi(SiO4)O

Localities: Reported from at least 18 localities in this region.

ⓘ Topaz

Formula: Al2(SiO4)(F,OH)2

Localities: Reported from at least 29 localities in this region.

ⓘ 'Tourmaline'

Formula: A D3G6 (T6O18)(BO3)3X3Z

Localities: Reported from at least 26 localities in this region.

Habit: prism and pyramid

Colour: yellow or pink often with characteristic black caps

Fluorescence: none

Description: As of 2014 no analytic work has been done to find the species found here.

ⓘ 'Tourmaline var. Rubellite'

Formula: A(D3)G6(T6O18)(BO3)3X3Z

Localities:

Pyant Gyi mine (Pyan Gyi), Pein-Pyit (Painpyit; Pyan Pyit), Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Pyingyi Taung (Pyin Gyi Taung), Male (Marle; Marla), Letpanhla, Singu Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
On-dan, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ Tremolite

Formula: ◻Ca2Mg5(Si8O22)(OH)2

ⓘ 'Unnamed (Al-Th Oxide)'

Formula: Al2Th3O9

ⓘ Uraninite

Formula: UO2

ⓘ Uraninite var. Pitchblende

Formula: UO2

ⓘ Uranophane

Formula: Ca(UO2)2(SiO3OH)2 · 5H2O

ⓘ Vesuvianite

Formula: Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9

ⓘ Wadeite

Formula: K2Zr(Si3O9)

Description: Yellow-green centimetric grains from alluvial ruby occurrence.

ⓘ 'White mica'

Localities: Reported from at least 6 localities in this region.

ⓘ Wollastonite

Formula: Ca3(Si3O9)

Localities:

Oak-saung-taung (Oh Saung Taung; Phayar-taung), Mogok Valley, Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Kwin Thone Ze (Kwinthonze mine), Thabeikkyin Township (Tha Pate Kyin Township), Pyin-Oo-Lwin District, Mandalay Region, Myanmar
Mogok Township, Pyin-Oo-Lwin District, Mandalay Region, Myanmar

ⓘ Xenotime-(Y)

Formula: Y(PO4)

ⓘ Zircon

Formula: Zr(SiO4)

Localities: Reported from at least 31 localities in this region.

ⓘ Zircon var. Hafnian Zircon

Formula: (Zr,Hf)SiO4

ⓘ Zirconolite

Formula: CaZrTi2O7

ⓘ 'Zirconolite-3T'

Formula: (Ca,REE)2Zr2(Ti,Nb)3FeO14