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Bradleyite

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About BradleyiteHide

00739200014946668299939.jpg
Wilmot H. Bradley
Formula:
Na3Mg(CO3)(PO4)
Colour:
Light grey
Lustre:
Vitreous
Hardness:
3 - 4
Specific Gravity:
2.734
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.


Classification of BradleyiteHide

Approved, 'Grandfathered' (first described prior to 1959)
First Published:
1941
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

Physical Properties of BradleyiteHide

Vitreous
Colour:
Light grey
Hardness:
3 - 4 on Mohs scale
Fracture:
Conchoidal
Density:
2.734 g/cm3 (Measured)    

Optical Data of BradleyiteHide

Type:
Biaxial (-)
RI values:
nα = 1.490 nγ = 1.560
Max Birefringence:
δ = 0.070
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
none

Chemical Properties of BradleyiteHide

Formula:
Na3Mg(CO3)(PO4)
IMA Formula:
Na3Mg(PO4)(CO3)

Crystallography of BradleyiteHide

Crystal System:
Monoclinic
Cell Parameters:
a = 8.85 Å, b = 6.63 Å, c = 5.16 Å
β = 90.42°
Ratio:
a:b:c = 1.335 : 1 : 0.778
Unit Cell V:
302.76 ų (Calculated from Unit Cell)
Morphology:
Extremely fine-grained masses.

Type Occurrence of BradleyiteHide

Place of Conservation of Type Material:
National Museum of Natural History, Washington, D.C., USA, 117718.
Geological Setting of Type Material:
Oil shale deposit.
Associated Minerals at Type Locality:

Other Language Names for BradleyiteHide

German:Bradleyit
Spanish:Bradleyita

Common AssociatesHide

Associated Minerals Based on Photo Data:
1 photo of Bradleyite associated with TsumoiteBiTe

Related Minerals - Nickel-Strunz GroupingHide

5.BF.05FerrotychiteNa6(Fe,Mn,Mg)2(CO3)4(SO4)Iso. m3 (2/m 3) : Fd3
5.BF.05ManganotychiteNa6Mn2(CO3)4(SO4)Iso. m3 (2/m 3) : Fd3
5.BF.05NorthupiteNa3Mg(CO3)2ClIso. m3 (2/m 3) : Fd3
5.BF.05TychiteNa6Mg2(CO3)4(SO4)Iso. m3 (2/m 3) : Fd3
5.BF.10BonshtedtiteNa3Fe2+(CO3)(PO4)Mon. 2/m : P21/m
5.BF.10CrawforditeNa3Sr(CO3)(PO4)Mon.
5.BF.10SidorenkiteNa3Mn2+(CO3)(PO4)Mon.
5.BF.15Daqingshanite-(Ce)(Sr,Ca,Ba)3(Ce,La)(CO3)3-x(PO4)(OH,F)2xTrig.
5.BF.20Reederite-(Y)(Na,Mn)15Y2(CO3)9(FSO3)ClHex. 6 : P6
5.BF.25Mineevite-(Y)Na25Ba(Y,Gd,Dy)2(CO3)11(HCO3)4(SO4)2F2ClHex.
5.BF.30BrianyoungiteZn3(CO3,SO4)(OH)4Mon. 2/m : P21/m
5.BF.35PhilolithitePb12Mn2+(Mg,Mn2+)2(Mn2+,Mg)4(CO3)4(SO4)O6(OH)12Cl4Tet. 4/mmm (4/m 2/m 2/m)
5.BF.40LeadhillitePb4(CO3)2(SO4)(OH)2Mon. 2/m : P21/b
5.BF.40MacphersonitePb4(CO3)2(SO4)(OH)2Orth. mmm (2/m 2/m 2/m)
5.BF.40SusannitePb4(CO3)2(SO4)(OH)2Trig. 3 : P3

Related Minerals - Dana Grouping (8th Ed.)Hide

43.2.1.2SidorenkiteNa3Mn2+(CO3)(PO4)Mon.
43.2.1.3BonshtedtiteNa3Fe2+(CO3)(PO4)Mon. 2/m : P21/m
43.2.1.4CrawforditeNa3Sr(CO3)(PO4)Mon.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

22.4.2KovdorskiteMg2(PO4)(OH) · 3H2OMon.
22.4.3Carbonate-rich HydroxylapatiteCa5(PO4,CO3)3(OH,O)Hex.
22.4.4Carbonate-rich FluorapatiteCa5(PO4,CO3)3(F,O)Hex.
22.4.5TyroliteCa2Cu9(AsO4)4(CO3)(OH)8 · 11H2OMon. 2/m
22.4.6HeneuiteCaMg5(CO3)(PO4)3(OH)Tric. 1 : P1
22.4.7GirvasiteNaCa2Mg3(PO4)3(CO3)(H2O)6Mon. 2/m : P21/b
22.4.8Daqingshanite-(Ce)(Sr,Ca,Ba)3(Ce,La)(CO3)3-x(PO4)(OH,F)2xTrig.
22.4.9GartrellitePbCuFe3+(AsO4)2(OH) · H2OTric. 1 : P1
22.4.10VoggiteNa2Zr(PO4)(CO3)(OH) · 2H2OMon.
22.4.11BonshtedtiteNa3Fe2+(CO3)(PO4)Mon. 2/m : P21/m

Other InformationHide

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.

References for BradleyiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Fahey, J.J., Tunell, G. (1941) Bradleyite, a new mineral, sodium phosphate-magnesium carbonate. American Mineralogist: 26: 646-650.
Brasseur (1946) Bull. soc. roy. sc. Liége: 15: 527.
Palache, C., Berman, H., Frondel, C. (1951) The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged: 295.
Tjy, C.T.L., Nadezhina, T.N., Pobedimskaya, E.A., Khomyakov, A.P. (1984) The crystal-chemical characteristics of bradleyite, sidorenkite and bonshtedtite. Mineralogiceskij Zhurnal: 6: 79-84. (in Russian)

Internet Links for BradleyiteHide

Localities for BradleyiteHide

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

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Angola
 
  • Huambo Province
    • Bailundo City Council
Castellano Calvo A, Melgarejo Draper J C, Kamenetsky V, Kamenetsky M (2014) Natrocarbonatite composition of melt inclusions from Bailundo and Longonjo carbonatites (Angola). 21 st meeting of the International Mineralogical Association. p 249
    • Longonjo City Council
Castellano Calvo A, Melgarejo Draper J C, Kamenetsky V, Kamenetsky M (2014) Natrocarbonatite composition of melt inclusions from Bailundo and Longonjo carbonatites (Angola). 21 st meeting of the International Mineralogical Association. p 249
Bosnia and Herzegovina
 
  • Federation of Bosnia and Herzegovina
    • Tuzla Canton
      • Tuzla
Am Min 79: pp 562-569
Canada
 
  • British Columbia
    • Omenica Mining Division
      • Williston Lake
Chakhmouradian, A. R., Reguir, E. P., Kressall, R. D., Crozier, J., Pisiak, L. K., Sidhu, R., & Yang, P. (2015). Carbonatite-hosted niobium deposit at Aley, northern British Columbia (Canada): Mineralogy, geochemistry and petrogenesis. Ore Geology Reviews, 64, 642-666.
  • Northwest Territories
    • Lac de Gras
      • Ekati Mine
Kamenetsky, V. S., Grütter, H., Kamenetsky, M. B., & Gömann, K. (2013). Parental carbonatitic melt of the Koala kimberlite (Canada): constraints from melt inclusions in olivine and Cr-spinel, and groundmass carbonate. Chemical Geology, 353, 96-111.
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
HORVÁTH, L., PFENNINGER HORVÁTH, E. (2000) I minerali di Mont-Saint-Hilaire (Québec, Canada) Rivista Mineralogica Italiana, XXIV, 140-202 (in Italian with English summary).
  • Saskatchewan
Shang, Y. (2000). Mineralogy, lithostratigraphy and geochemistry of North Ingebright Lake, Saskatchewan, Canada. PhD thesis University of Manitoba.
Russia
 
  • Murmansk Oblast
    • Khibiny Massif
Pekov, I.V. & Podlesnyi, A.S. (2004): Kukisvumchorr Deposit: Mineralogy of Alkaline Pegmatites and Hydrotermalites. Mineralogical Almanac, vol. 7, 140 pages + xxiv photo's pages
    • Kovdor Massif
Pavel M. Kartashov analytical data 2012
Pavel M. Kartashov analytical data 2012
    • Northern Karelia
Zaitsev, A. N., Sitnikova, M. A., Subbotin, V. V., Fernández-Suárez, J., Jeffries, T. E., & Wall, F. (2004). Sallanlatvi complex—a rare example of magnesite and siderite carbonatites. Phoscorites and carbonatites from mantle to mine: the key example of the Kola Alkaline Province. Mineralogical Society, London, 201-245.
  • Sakha Republic (Yakutia)
    • Mirninsky District
      • Daldyn
Sharygin, V. V., Kamenetsky, V. S., & Kamenetsky, M. B. (2008). Potassium sulfides in kimberlite-hosted chloride–“nyerereite” and chloride clasts of Udachnaya-East pipe, Yakutia, Russia. The Canadian Mineralogist, 46(4), 1079-1095.
  • Tuva
Sharygin, V. V. (2016) Secondary olivine-hosted inclusions in calcite-dolomite carbonatite of the Belaya Zima alkaline massif, Eastern Sayan, Russia: Evidence for Na-rich carbonatite composition. Asian Current Research On Fluid Inclusions (ACROFI-VI), Indian Institute of Technology Bombay
South Africa
 
  • Free State
    • Thabo Mofutsanyane District
      • Clocolan
Kamenetsky, V. S., Belousova, E. A., Giuliani, A., Kamenetsky, M. B., Goemann, K., & Griffin, W. L. (2014). Chemical abrasion of zircon and ilmenite megacrysts in the Monastery kimberlite: Implications for the composition of kimberlite melts. Chemical Geology, 383, 76-85.
  • Northern Cape
    • Frances Baard
      • Sol Plaatje
        • Kimberley
          • KEM JV Mine (Kimberley Ekapa Mining Joint Venture mine; Kimberley Underground mine)
Giuliani, A., Kamenetsky, V. S., Phillips, D., Kendrick, M. A., Wyatt, B. A., & Goemann, K. (2012). Nature of alkali-carbonate fluids in the sub-continental lithospheric mantle. Geology, 40(11), 967-970.; Giuliani, A., Soltys, A., Phillips, D., Kamenetsky, V. S., Maas, R., Goemann, K., ... & Griffin, W. L. (2017). The final stages of kimberlite petrogenesis: petrography, mineral chemistry, melt inclusions and Sr-CO isotope geochemistry of the Bultfontein kimberlite (Kimberley, South Africa). Chemical Geology, 455, 342-356.
USA
 
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 139, 279, 295.
  • Wyoming
    • Sweetwater Co.
      • Green River formation
[Clark, 1993, "Hey's Mineral Index"]; USGS PP405
Am Min 26:646-650
 
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