Bradleyite (original) (raw)

A valid IMA mineral species - grandfathered

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About BradleyiteHide

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Crystal System:

Monoclinic

Name:

Named in 1941 by John Joseph Fahey in honor of geologist Wilmot Hyde Bradley [April 4, 1899 Westville, Connecticut, USA - April 12, 1979 Pigeon Hill Road, Bangor, Maine, USA], Chief Geologist of U.S. Geological Survey, who conducted geologic investigations in the Green River area, Wyoming. Bradley was a co-founder and Chief of the Branch of Military Geology in 1943 and was Chief Geologist of the United States Geological Survey from 1944 to 1959 and retired from the U. S. Geological Survey in 1970.

Structurally related to bonshtedtite.

May occur as fluid inclusions in chromite (Potapov et al., 2022).

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:750:4

c6f316aa-0d6e-4f84-8329-27d5e0a3c4f2

IMA Classification of BradleyiteHide

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Approved, 'Grandfathered' (first described prior to 1959)

IMA Formula:

Na3Mg(PO4)(CO3)

Type description reference:

Classification of BradleyiteHide

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5.BF.10

5 : CARBONATES (NITRATES)
B : Carbonates with additional anions, without H2O
F : With (Cl), SO4, PO4, TeO3

43.2.1.1

43 : COMPOUND PHOSPHATES, ETC.
2 : Anhydrous Normal Compound Phosphates, etc·

22.4.1

22 : Phosphates, Arsenates or Vanadates with other Anions
4 : Phosphates, arsenates or vanadates with carbonate

Mineral SymbolsHide

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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Symbol Source Reference
Bd IMA–CNMNC Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of BradleyiteHide

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Density:

2.734 g/cm3 (Measured) 2.72 g/cm3 (Calculated)

Optical Data of BradleyiteHide

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RI values:

_n_α = 1.487(2) _n_β = 1.546(2) _n_γ = 1.560(2)

2V:

Measured: 49° , Calculated: 50°

δ = 0.073

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Chemistry of BradleyiteHide

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Mindat Formula:

Na3Mg(CO3)(PO4)

Crystallography of BradleyiteHide

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Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Cell Parameters:

a = 8.85(1) Å, b = 6.63(1) Å, c = 5.16(1) Å
β = 90.42(5)°

Ratio:

a:b:c = 1.335 : 1 : 0.778

Unit Cell V:

302.76 ų (Calculated from Unit Cell)

Morphology:

Extremely fine-grained masses.

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

d-spacing Intensity
2.655 Å (100)
3.312 Å (71)
8.85 Å (50)
2.576 Å (35)
1.839 Å (30)
3.694 Å (25)
1.658 Å (25)

Geological EnvironmentHide

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Type Occurrence of BradleyiteHide

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General Appearance of Type Material:

extremely fine-grained masses.

Place of Conservation of Type Material:

National Museum of Natural History, Washington, D.C., USA, 117718.

Geological Setting of Type Material:

Associated Minerals at Type Locality:

Reference:

Fahey, J.J., Tunell, G. (1941) Bradleyite, a new mineral, sodium phosphate-magnesium carbonate. American Mineralogist: 26: 646-650.

Other Language Names for BradleyiteHide

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Common AssociatesHide

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Associated Minerals Based on Photo Data:

Related Minerals - Strunz-mindat GroupingHide

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5.BF.05 Northupite Na3Mg(CO3)2Cl Iso. m_3(2/m_3) : F _d_3
5.BF.05 Manganotychite Na6Mn2(CO3)4(SO4) Iso. m_3(2/m_3) : F _d_3
5.BF.05 Tychite Na6Mg2(CO3)4(SO4) Iso. m_3(2/m_3) : F _d_3
5.BF.05 Ferrotychite Na6(Fe,Mn,Mg)2(CO3)4(SO4) Iso. m_3(2/m_3) : F _d_3
5.BF.10 Sidorenkite Na3Mn2+(CO3)(PO4) Mon.
5.BF.10 Crawfordite Na3Sr(CO3)(PO4) Mon. 2 : _P_21
5.BF.10 Bonshtedtite Na3Fe2+(CO3)(PO4) Mon. 2/m : _P_21/m
5.BF.15 Daqingshanite-(Ce) (Sr,Ca,Ba)3(Ce,La)(CO3)3-x(PO4)(OH,F)2x Trig.
5.BF.20 Reederite-(Y) (Na,Mn)15Y2(CO3)9(FSO3)Cl Hex. 6 : _P_6
5.BF.25 Mineevite-(Y) Na25Ba(Y,Gd,Dy)2(CO3)11(HCO3)4(SO4)2F2Cl Hex. 6/m : _P_63/m
5.BF.30 Brianyoungite Zn3(CO3,SO4)(OH)4 Mon. 2/m : _P_21/m
5.BF.35 Philolithite Pb12Mn2+(Mg,Mn2+)2(Mn2+,Mg)4(CO3)4(SO4)O6(OH)12Cl4 Tet. 4/m m m _(_4/_m_2/_m_2/m )
5.BF.40 Leadhillite Pb4(CO3)2(SO4)(OH)2 Mon. 2/m : _P_21/b
5.BF.40 Macphersonite Pb4(CO3)2(SO4)(OH)2 Orth. m m m _(_2/_m_2/_m_2/m )
5.BF.40 Susannite Pb4(CO3)2(SO4)(OH)2 Trig. 3 : _P_3
5.BF.45 Peatite-(Y) Li4Na12Y12(PO4)12(CO3)4(F,OH)8 Orth. 222 : _P_222
5.BF.50 Ramikite-(Y) Li4(Na,Ca)12Y6Zr6(PO4)12(CO3)4O4[(OH),F]4 Tric. 1 : _P_1

Other InformationHide

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Notes:

Slowly decomposed by cold water with Na2CO3 released to solution. Readily soluble in dilute HCl.

Health Risks:

No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

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References for BradleyiteHide

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Reference List:

Palache, Charles, Berman, Harry, Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Ect. John Wiley and Sons, New York.

Kozlov, Evgeniy Nikolaevich, Fomina, Ekaterina Nikolaevna, Bocharov, Vladimir Nikolaevich, Sidorov, Mikhail Yurievich, Vlasenko, Natalia Sergeevna, Shilovskikh, Vladimir Vladimirovich (2021) A Raman spectroscopic study of the natural carbonophosphates Na3_M_CO3PO4 (M is Mn, Fe, and Mg) European Journal of Mineralogy, 33 (3) 283-297 doi:10.5194/ejm-33-283-2021

Potapov, S.V., Sharygin, I.S., Konstantinov, K.M., Danilov, B.S., Shcherbakov, Yu.D., Letnikov, F.A. (2022): Melt Inclusions in Cromium Spinel of Kimberlites of the Zapolyarnaya Pipe, Upper Muna Field, Siberian Craton. Doklady Earth Sciences: 504: 271–275.

Localities for BradleyiteHide

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This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

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- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.

Angola
Huambo Province Bailundo ⓘ Bailundo Castellano Calvo A et al. (2014)
Longonjo ⓘ Mount Chibilundo Castellano Calvo A et al. (2014)
Bosnia and Herzegovina
Federation of Bosnia and Herzegovina Tuzla Canton Tuzla ⓘ Tuzla Mine Bermanec et al. (1994)
Canada
British Columbia Omineca Mining Division Williston Lake ⓘ Aley Deposit (Aley Creek Carbonatite Complex) Chakhmouradian et al. (2015)
Northwest Territories Lac de Gras Ekati Mine ⓘ Koala pit Kamenetsky et al. (2013)
ⓘ Roger Pipe Abersteiner et al. (2018)
Québec Montérégie La Vallée-du-Richelieu RCM Mont Saint-Hilaire ⓘ Poudrette quarry (De-Mix quarry; Demix quarry; Uni-Mix quarry; Carrière Mont Saint-Hilaire; MSH) HORVÁTH et al. (2000)
Saskatchewan ⓘ North lngebright Lake Shang (2000)
Russia
Arkhangelsk Oblast Zimny Bereg District Zimny Bereg kimberlite field Verkhotina occurrence ⓘ Grib pipe Golovin et al. (2023)
Krasnoyarsk Krai Maimecha and Kotui Rivers Basin ⓘ Gulinskii massif (Guli) Chayka et al. (2021)
Murmansk Oblast Khibiny Massif ⓘ Kukisvumchorr Mt Pekov et al. (2004)
Kovdorsky District Kovdor Massif ⓘ Kovdor Zheleznyi Mine Pavel M. Kartashov analytical data (2012)
ⓘ Lesnaya Varaka Massif Pavel M. Kartashov analytical data (2012)
Northern Karelia ⓘ Sallanlatvi Massif Zaitsev et al. (2004)
Sakha Mirninsky District Daldyn ⓘ Udachnaya open-pit mine (Udachnaya-Vostochnaya pipe; Udachnaya pipe) Sharygin et al. (2008)
Upper Muna kimberlite field (Verkhne-Munskoe; Verkhnemunsky) ⓘ Zapolyarny open-pit mine (Zapolyarnaya pipe) Potapov et al. (2022) +1 other reference
Tuva ⓘ Belaya Zima REE-Nb deposit Sharygin (2016) +1 other reference
South Africa
Free State Thabo Mofutsanyane District Municipality Setsoto Local Municipality Clocolan ⓘ Monastery Mine Kamenetsky et al. (2014)
Northern Cape Frances Baard District Municipality Sol Plaatje Local Municipality Kimberley KEM JV Mine (Kimberley Ekapa Mining Joint Venture mine; Kimberley Underground mine) ⓘ Bultfontein Mine Giuliani et al. (2012) +2 other references
Turkey
Ankara Province Beypazari District ⓘ Beypazarı trona deposit García-Veigas et al. (2013)
USA
ⓘ Green River Formation Palache et al. (1951) +2 other references
Wyoming Sweetwater County Green River Basin ⓘ Westvaco mine USGS PP405. +1 other reference
ⓘ John Hay Jr. Well No. 1 (TL) Fahey et al. (1941)