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Betpakdalite-CaCa

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Formula:
[Ca2(H2O)17Ca(H2O)6][Mo6+8As5+2Fe3+3O36(OH)]
Colour:
Lemon yellow with greeenish tint
Lustre:
Dull
Hardness:
3
Specific Gravity:
2.98 - 3.05
Crystal System:
Monoclinic
Name:
Named betpakdalite by L.P. Ermilova and V.M. Senderova in 1961 after the Betpakdala (Bet-Pak-Dal) Desert, Kazakhstan that includes the type locality.

It was redefined in 2010 (IMA 10-E) and renamed betpakdalite-CaCa.
This page provides mineralogical data about Betpakdalite-CaCa.


Hide all sections | Show all sections

Classification of Betpakdalite-CaCaHide

Approved
Notes:
Renamed by the IMA
First Published:
1961
Approval History:
Renamed by IMA: 2010
8.DM.15

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
M : With large and medium-sized cations, (OH, etc.):RO4 > 2:1
49.4.1.1

49 : HYDRATED MOLYBDATES AND TUNGSTATES
4 : Compound Molybdates and Tungstates
22.5.8

22 : Phosphates, Arsenates or Vanadates with other Anions
5 : Phosphates, arsenates or vanadates with chromate, molybdate, niobate or tantalate

Physical Properties of Betpakdalite-CaCaHide

Transparency:
Transparent
Colour:
Lemon yellow with greeenish tint
Hardness:
Cleavage:
Very Good
{001}
Density:
2.98 - 3.05 g/cm3 (Measured)    2.913 g/cm3 (Calculated)

Optical Data of Betpakdalite-CaCaHide

Type:
Biaxial (+)
RI values:
nα = 1.782 - 1.809 nβ = 1.797 - 1.821 nγ = 1.850 - 1.857
2V:
Measured: 60° , Calculated: 53° to 88°
Max Birefringence:
δ = 0.068
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
extreme, inclined
Pleochroism:
Visible
Comments:
X = pale yellow, Y = greenish yellow, Z= bluish Z > Y > X

Chemical Properties of Betpakdalite-CaCaHide

Formula:
[Ca2(H2O)17Ca(H2O)6][Mo6+8As5+2Fe3+3O36(OH)]

Crystallography of Betpakdalite-CaCaHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 19.507(2) Å, b = 11.0768(9) Å, c = 15.2618(19) Å
β = 131.2618(5)°
Ratio:
a:b:c = 1.761 : 1 : 1.378
Unit Cell V:
2470.3 ų
Comment:
Cell parameters from SCXRD (Kampf et al 2012)

Type Occurrence of Betpakdalite-CaCaHide

General Appearance of Type Material:
Powdery finely-crystalline aggregates, individual crystals being 0.005 to 0.025 mm.
Geological Setting of Type Material:
Oxidation zone of a wolframite deposit, that consists of early quartz-wolframite-veins and later quartz-huebnerite-pyrite-arsenopyrite veins.
Associated Minerals at Type Locality:

Other Language Names for Betpakdalite-CaCaHide

Relationship of Betpakdalite-CaCa to other SpeciesHide

Other Members of this group:
Betpakdalite-CaMg[Ca2(H2O)17Mg(H2O)6][Mo8As2Fe3+3O36(OH)] Mon. 2/m : B2/m
Betpakdalite-FeFe[Fe3+2 (H2O)15(OH)2Fe3+(H2O)6][Mo8As2Fe3+3 O37]Mon. 2/m : B2/m
Betpakdalite-NaCa[Na2(H2O)17Ca(H2O)6][Mo6+8As5+2Fe3+3O34(OH)3]Mon. 2/m : B2/m
Betpakdalite-NaNa[Na2(H2O)16Na(H2O)6][Mo8As2Fe3+3O33(OH)4] Mon. 2/m : B2/m

Common AssociatesHide

Associated Minerals Based on Photo Data:
Molybdenite3 photos of Betpakdalite-CaCa associated with Molybdenite on mindat.org.
Arsenuranospathite2 photos of Betpakdalite-CaCa associated with Arsenuranospathite on mindat.org.
Calcite1 photo of Betpakdalite-CaCa associated with Calcite on mindat.org.
Pharmacosiderite1 photo of Betpakdalite-CaCa associated with Pharmacosiderite on mindat.org.
Quartz1 photo of Betpakdalite-CaCa associated with Quartz on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.DM.05MoriniteNaCa2Al2(PO4)2(OH)F4 · 2H2OMon. 2/m
8.DM.05EsperanzaiteNaCa2Al2(AsO4)2(OH)F4 · 2H2OMon.
8.DM.10ClinotyroliteCa2Cu9(AsO4,SO4)4(OH,O)10 · 10H2OMon.
8.DM.10TyroliteCa2Cu9(AsO4)4(CO3)(OH)8 · 11H2OMon. 2/m
8.DM.15Melkovite[Ca2(H2O)15Ca(H2O)6][Mo8P2Fe3+3O36(OH)]Mon. 2/m : B2/m
8.DM.15Betpakdalite-NaCa[Na2(H2O)17Ca(H2O)6][Mo6+8As5+2Fe3+3O34(OH)3]Mon. 2/m : B2/m
8.DM.20Phosphovanadylite-BaBa[V4+4P2O8(OH)8]·12H2OIso.
8.DM.20Phosphovanadylite-CaCa[V4+4P2O12(OH)4] · 12H2O Iso. 4 3m : I4 3m
8.DM.25YukoniteCa3Fe3+(AsO4)2(OH)3 · 5H2OOrth. mm2
8.DM.30UdumineliteCa3Al8(PO4)2O12 · 2H2O
8.DM.35DelvauxiteCaFe4(PO4,SO4)2(OH)8 · 4-6H2O not confirmed · Amor.
8.DM.40Santafeite(Na,Ca,Sr)12(Mn2+,Fe3+,Al,Mg)8Mn4+8(VO4)16(OH,O)20 · 8H2OOrth. mmm (2/m 2/m 2/m)

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

22.5.1VauquelinitePb2Cu(CrO4)(PO4)(OH)Mon. 2/m
22.5.2EmbreyitePb5(CrO4)2(PO4)2 · H2OMon.
22.5.3CassedanneitePb5(CrO4)2(VO4)2 · H2OMon.
22.5.4FornacitePb2Cu(CrO4)(AsO4)(OH)Mon. 2/m : P21/b
22.5.5MolybdofornacitePb2Cu(MoO4,CrO4)(AsO4,PO4)(OH)Mon.
22.5.6Mendozavilite-NaFe[Na2(H2O)15Fe3+(H2O)6][Mo8P2Fe3+3O35(OH)2]Mon. 2/m : B2/m
22.5.7ParamendozaviliteNaAl4Fe7(PO4)5(PMo12O40)(OH)16 · 56H2OMon.
22.5.9Betpakdalite-NaCa[Na2(H2O)17Ca(H2O)6][Mo6+8As5+2Fe3+3O34(OH)3]Mon. 2/m : B2/m
22.5.10Obradovicite-KCu[K2(H2O)17Cu(H2O)6][Mo8As2Fe3+3O34(OH)3]Orth. mmm (2/m 2/m 2/m) : Pmna
22.5.11Melkovite[Ca2(H2O)15Ca(H2O)6][Mo8P2Fe3+3O36(OH)]Mon. 2/m : B2/m
22.5.12RankachiteCa0.5(V4+,V5+)(W6+,Fe3+)2O8(OH) · 2H2OMon. 2/m : P21/m
22.5.13OlmsteaditeKFe2+2(Nb5+,Ta5+)(PO4)2O2 · 2H2OOrth.
22.5.14JohnwalkiteK(Mn2+,Fe2+,Fe3+)2(Nb5+,Ta5+)(PO4)2O2 · 2(H2O,OH)Orth.

Other InformationHide

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 Betpakdalite-CaCaHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Ermilova, L.P., Senderova, V.M. (1961) Betpakdalite, a new mineral from the oxidation zone of the wolframite ore deposit of Karaoba (Central Kazakhstan). Zapiski Vserossiiskogo Mineralogicheskogo Obshchestva: 90: 425-430. (in Russian)
Fleischer, M. (1962) New mineral names. American Mineralogist: 47: 172-174.
International Mineralogical Association (1967) Commission on new minerals and mineral names. Mineralogical Magazine: 36: 131-136.
Schmetzer, K., Nuber, B., Tremmel, G. (1984) Betpakdalite from Tsumeb, Namibia: mineralogy, crystal chemistry and structure. Neues Jahrbuch für Mineralogie, Monatshefte: 1984: 393-403. (in German)
Dunn, P.J., Ferraiolo, J.A., Fleischer, M., Gobel, V., Grice, J.D., Langley, R.H., Shigley, J.E., Vanko, D.A., Zilczer, J.A. (1985) New mineral names. American Mineralogist: 70: 1329-1335.
Moore, P.B. (1992) Betpakdalite unmasked, and a comment on bond valences. Australian Journal of Chemistry: 45: 1335-1354.
Jambor, J.L., Burke, E.A.J. (1993) New mineral names. American Mineralogist: 78: 845-849.
Cooper, M.A., Hawthorne, F.C. (1999) The crystal structure of betpakdalite, and a new chemical formula: {Mg (H2O)6} Ca2 (H2O)13 [Mo6+8 As5+2 Fe3+3 O36 (OH)] (H2O)4. Canadian Mineralogist: 37: 61-66.
Kampf, A.R., Mills, S.J., Rumsey, M.S., Dini, M., Birch, W.D., Spratt, J., Pluth, J.J., Steele, I.M., Jenkins, R.A., Pinch, W.W. (2012) The heteropolymolybdate family: structural relations, nomenclature scheme and new species. Mineralogical Magazine: 76: 1175-1207.
Jambor, J.L., Roberts, A.C. (2000) New mineral names. American Mineralogist: 85: 263-266.
Williams, P.A., Hatert, F., Pasero, M., Mills, S.J. (2011) IMA Commission on new minerals, nomenclature and classification (CNMNC) Newsletter 7. New minerals and nomenclature modifications approved in 2010. Mineralogical Magazine: 75: 27-31.

Internet Links for Betpakdalite-CaCaHide

Localities for Betpakdalite-CaCaHide

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.
Australia
 
  • New South Wales
    • Gough Co.
      • Elsmore
Williams, P. A., Leverett, P., Sharpe, J. L., Colchester, D. M., & Rankin, J. (2005). Elsmoreite, cubic WO3· 0.5 H2O, a new mineral species from Elsmore, New South Wales, Australia. The Canadian Mineralogist, 43(3), 1061-1064.
Chile
 
  • Atacama Region
    • Copiapó Province
      • Tierra Amarilla
        • Pampa Larga district
analysed with Edx, Pdf and Microprobe (by dr. Jochen Schlüter); Kampf, A.R., Mills, S.J., Rumsey, M.S., Dini, M., Birch, W.D., Spratt, J., Pluth, J.J., Steele, I.M., Jenkins, R.A., Pinch, W.W. (2012): The heteropolymolybdate family: structural relations, nomenclature scheme and new species. Mineralogical Magazine, 76, 1175-1207
China
 
  • Hebei Province
    • Zhangjiakou Prefecture
      • Guyuan Co.
Dahlkamp, F.J. (2009): Uranium Deposits of the World. Springer (Berlin, Heidelberg), pp. 31-156
Czech Republic
 
  • Bohemia (Böhmen; Boehmen)
    • Karlovy Vary Region
      • Horní Slavkov (Schlaggenwald)
        • Krásno (Schönfeld)
Sejkora, J., Ondruš, P., Fikar, M., Veselovský, F., Mach, Z., Gabašová, A., Skoda, R. & Beran, P. (2006): Supergene minerals at the Huber stock and Schnöd stock deposits, Krásno ore District, the Slavkovský les area, Czech Republic. Journal of the Czech Geological Society 51, 57-101.
    • Ústí Region
      • Krušné Hory Mts (Erzgebirge)
        • Krupka (Graupen)
          • Knöttel area (Knötel; Knödel; Knödlberg)
Lapis 23(4), 18-34 (1998)
France
 
  • Nouvelle-Aquitaine
    • Haute-Vienne
      • Nantiat
        • Vaulry
[MinRec 23:434]
          • Vaulry Mines
Queneau Patrice collection MinRec 23:434
Germany
 
  • Saxony
    • Erzgebirge
      • Schmiedeberg
Thomas Witzke
Japan
 
  • Honshu Island
    • Chugoku region
      • Hiroshima prefecture
        • Inland Sea (Setonaikai)
          • Ikuchi Island
The Mineral Species of Japan (5th ed) Matsubara
Kazakhstan
 
  • Almaty Province (Almaty Oblysy; Almati Oblast')
    • Lake Alakol (Lake Aaköl)
P.M. Kartashov data
  • Karagandy Province (Qaragandy Oblysy; Karaganda Oblast')
    • Betpakdala Desert (Bet-Pak-Dal Desert)
[Nickel & Nichols, 1991 - "Mineral Reference Manual", p22]; Ermilova, L. P. & Senderova, V. M. (1961): Betpakdalite, a new mineral from the oxidation zone of the wolframite ore deposit of Karaoba (Central Kazakhstan). Zapiski Vserossiiskogo Mineralogicheskogo Obshchestva 90, 425-430. (in Russian) ; Evseev, A. A. (1995) Kazaknstan and Middle Asia. A brief Mineralogical Guide. World of Stone 8:24-30
Mongolia
 
Kampf, A.R., Mills, S.J., Rumsey, M.S., Dini, M., Birch, W.D., Spratt, J., Pluth, J.J., Steele, I.M., Jenkins, R.A., Pinch, W.W. (2012): The heteropolymolybdate family: structural relations, nomenclature scheme and new species. Mineralogical Magazine, 76, 1175-1207
Namibia
 
  • Otjikoto Region (Oshikoto)
    • Tsumeb
Schmetzer, K. et al., Neues Jahrbuch Min., Monarshefte 1984, 393-403
Norway
 
  • Nordland
    • Tysfjord
      • Drag
Husdal, T. (2011): Tysfjordgranittens pegmatitter. Stein. 38 (4): 4-35; Kampf, A.R., Mills, S.J., Rumsey, M.S., Dini, M., Birch, W.D., Spratt, J., Pluth, J.J., Steele, I.M., Jenkins, R.A., Pinch, W.W. (2012): The heteropolymolybdate family: structural relations, nomenclature scheme and new species. Mineralogical Magazine, 76, 1175-1207
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