Morogoro Region, Tanzania (original) (raw)

ⓘ Actinolite

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

Colour: Dark green

Description: Cluster of crystals have been collected in the region, can be associated with adularia.

ⓘ Albite

Formula: Na(AlSi3O8)

ⓘ 'Amphibole Supergroup'

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

ⓘ Anorthite

Formula: Ca(Al2Si2O8)

ⓘ 'Apatite'

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

Localities:

Ipanko, Mahenge, Morogoro Region, Tanzania
Ketuti, Mahenge, Morogoro Region, Tanzania
Ruaha, Mahenge, Morogoro Region, Tanzania
Mahenge, Morogoro Region, Tanzania

ⓘ Baryte

Formula: BaSO4

ⓘ 'Bastnäsite'

Formula: (Ce/Nd/Y/REE)(CO3)F

ⓘ Bismuthinite

Formula: Bi2S3

ⓘ Calcite

Formula: CaCO3

Localities:

Rubeho Mountains, Kilosa District, Morogoro Region, Tanzania
Behobeho River area, Morogoro Region, Tanzania
Mahenge, Morogoro Region, Tanzania
Ipanko, Mahenge, Morogoro Region, Tanzania

ⓘ 'Chlorite Group'

ⓘ Clinohumite

Formula: Mg9(SiO4)4F2

Localities:

Marble occurrence, Morogoro, Morogoro Region, Tanzania
Ipanko, Mahenge, Morogoro Region, Tanzania
Ketuti, Mahenge, Morogoro Region, Tanzania
Ruaha, Mahenge, Morogoro Region, Tanzania

ⓘ Clinozoisite

Formula: (CaCa)(AlAlAl)O[Si2O7][SiO4](OH)

ⓘ Corundum

Formula: Al2O3

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

ⓘ Corundum var. Ruby

Formula: Al2O3

Localities:

Lukanda (Lukande), Mahenge, Morogoro Region, Tanzania
Mayote, Mahenge, Morogoro Region, Tanzania
Chipa, Mahenge, Morogoro Region, Tanzania
Gairo District, Morogoro Region, Tanzania
Mahenge, Morogoro Region, Tanzania

ⓘ Corundum var. Sapphire

Formula: Al2O3

ⓘ Danburite

Formula: CaB2Si2O8

ⓘ Diopside

Formula: CaMgSi2O6

ⓘ Dolomite

Formula: CaMg(CO3)2

ⓘ Dravite

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

ⓘ Enstatite

Formula: Mg2Si2O6

ⓘ Euclase

Formula: BeAl(SiO4)(OH)

ⓘ Forsterite

Formula: Mg2SiO4

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

ⓘ Goyazite

Formula: SrAl3(PO4)(PO3OH)(OH)6

ⓘ Graphite

Formula: C

Localities:

Marble occurrence, Morogoro, Morogoro Region, Tanzania
Ketuti, Mahenge, Morogoro Region, Tanzania
Ruaha, Mahenge, Morogoro Region, Tanzania
Ipanko, Mahenge, Morogoro Region, Tanzania

ⓘ Grossular

Formula: Ca3Al2(SiO4)3

ⓘ Hematite

Formula: Fe2O3

ⓘ Hercynite

Formula: Fe2+Al2O4

ⓘ Hibonite

Formula: CaAl12O19

ⓘ 'Högbomite'

Formula: (Mg,Fe)2(Al,Ti)5O10

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

ⓘ 'Hornblende Root Name Group'

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

ⓘ Ilmenite

Formula: Fe2+TiO3

ⓘ Kasolite

Formula: Pb(UO2)(SiO4) · H2O

ⓘ Kyanite

Formula: Al2(SiO4)O

Description: Pseudomorphs after corundum

ⓘ 'Liddicoatite'

Formula: Ca(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)

ⓘ Magnesio-hornblende

Formula: ◻Ca2(Mg4Al)(Si7Al)O22(OH)2

ⓘ Magnesite

Formula: MgCO3

ⓘ Magnetite

Formula: Fe2+Fe3+2O4

ⓘ Marialite

Formula: Na4Al3Si9O24Cl

ⓘ Microcline

Formula: K(AlSi3O8)

ⓘ Microcline var. Amazonite

Formula: K(AlSi3O8)

ⓘ 'Monazite'

Formula: REE(PO4)

ⓘ Monazite-(Ce)

Formula: Ce(PO4)

ⓘ Muscovite

Formula: KAl2(AlSi3O10)(OH)2

ⓘ Muscovite var. Sericite

Formula: KAl2(AlSi3O10)(OH)2

ⓘ 'Olivine Group'

Formula: M2SiO4

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

ⓘ Pargasite

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

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

ⓘ Phlogopite

Formula: KMg3(AlSi3O10)(OH)2

ⓘ 'Plagioclase'

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

ⓘ Powellite

Formula: Ca(MoO4)

ⓘ Prehnite

Formula: Ca2Al2Si3O10(OH)2

ⓘ Pyrite

Formula: FeS2

ⓘ Quartz

Formula: SiO2

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

ⓘ Quartz var. Amethyst

Formula: SiO2

ⓘ Quartz var. Blue Quartz

Formula: SiO2

ⓘ Quartz var. Smoky Quartz

Formula: SiO2

ⓘ Rossmanite

Formula: ◻(LiAl2)Al6(Si6O18)(BO3)3(OH)3(OH)

ⓘ Rutherfordine (TL)

Formula: (UO2)CO3

Type Locality:

Description: Replaces uraninite cubes (size : up to 3 centimeters).

ⓘ Rutile

Formula: TiO2

ⓘ 'Scapolite'

Localities:

Marble occurrence, Morogoro, Morogoro Region, Tanzania
Rubeho Mountains, Kilosa District, Morogoro Region, Tanzania
Ketuti, Mahenge, Morogoro Region, Tanzania
Ruaha, Mahenge, Morogoro Region, Tanzania

ⓘ Schorl

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

ⓘ Sphalerite

Formula: ZnS

ⓘ Spinel

Formula: MgAl2O4

Localities: Reported from at least 9 localities in this region.

ⓘ Titanite

Formula: CaTi(SiO4)O

ⓘ 'Tourmaline'

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

ⓘ Tremolite

Formula: ◻Ca2Mg5(Si8O22)(OH)2

ⓘ Uraninite

Formula: UO2

ⓘ Uranophane

Formula: Ca(UO2)2(SiO3OH)2 · 5H2O

ⓘ Vandendriesscheite

Formula: PbU7O22 · 12H2O

ⓘ Zoisite

Formula: (CaCa)(AlAlAl)O[Si2O7][SiO4](OH)