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Betpakdalite-CaCa

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Kara-Oba W deposit, Betpakdala Desert (Bet-Pak-Dal Desert), Karagandy Province (Qaragandy Oblysy; Karaganda Oblast'), Kazakhstan
© Elmar Lackner

Show Betpakdalite-CaCa Photos (23)



Formula:
[Ca
 
2
(H
 
2
O)
 
17
Ca(H
 
2
O)
 
6
][Mo
6+
8
As
5+
2
Fe
3+
3
O
 
36
(OH)]
System:MonoclinicColour:Yellow
Lustre:WaxyHardness:3
Member of:Betpakdalite Group
Name:After the locality, the Kara-Oba West deposit, Betpakdala Desert (Bet-Pak-Dal Desert), Qaraghandy Oblysy, Kazakhstan.


Formerly called betpakdalite; redefined in 2010 (IMA 10-E).

Classification of Betpakdalite-CaCa

IMA status:Redefined Approved 2010
Strunz 8th edition ID:7/C.33-30
Nickel-Strunz 10th (pending) edition ID: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
Dana 8th edition ID:49.4.1.1

49 : HYDRATED MOLYBDATES AND TUNGSTATES
4 : Compound Molybdates and Tungstates
Hey's CIM Ref.:22.5.8

22 : Phosphates, Arsenates or Vanadates with other Anions
5 : Phosphates, arsenates or vanadates with chromate, molybdate, niobate or tantalate
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Type Occurrence of Betpakdalite-CaCa

Type Locality:Kara-Oba W deposit, Betpakdala Desert (Bet-Pak-Dal Desert), Karagandy Province (Qaragandy Oblysy; Karaganda Oblast'), Kazakhstan
Year of Discovery:1961

Physical Properties of Betpakdalite-CaCa

Lustre:Waxy
Colour:Yellow
Hardness (Mohs):3

Crystallography of Betpakdalite-CaCa

Crystal System:Monoclinic
Cell Parameters:a = 11.1Å, b = 19.44Å, c = 22.93Å
Ratio:a:b:c = 0.571 : 1 : 1.18
Unit Cell Volume:V 0.00 ų (Calculated from Unit Cell)

Optical Data of Betpakdalite-CaCa

Type:Biaxial (+)
RI values: nα = 1.782 nβ = 1.797 nγ = 1.850
2V:Measured: 60° , Calculated: 58°
Maximum Birefringence:δ = 0.068

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:extreme

Chemical Properties of Betpakdalite-CaCa

Formula:
[Ca
 
2
(H
 
2
O)
 
17
Ca(H
 
2
O)
 
6
][Mo
6+
8
As
5+
2
Fe
3+
3
O
 
36
(OH)]
Essential elements:As, Ca, Fe, H, Mo, O
All elements listed in formula:As, Ca, Fe, H, Mo, O

Relationship of Betpakdalite-CaCa to other Species

Member of:Betpakdalite Group
Other Members of Group:

- +
Betpakdalite-CaMg
[Ca
 
2
(H
 
2
O)
 
17
Mg(H
 
2
O)
 
6
][Mo
 
8
As
 
2
Fe
3+
3
O
 
36
(OH)]
Betpakdalite-NaCa
[Na
 
2
(H
 
2
O)
 
17
Ca(H
 
2
O)
 
6
][Mo
6+
8
As
5+
2
Fe
3+
3
O
 
34
(OH)
 
3
]
Betpakdalite-NaNa
[Na
 
2
(H
 
2
O)
 
16
Na(H
 
2
O)
 
6
][Mo
 
8
As
 
2
Fe
3+
3
O
 
33
(OH)
 
4
]
Related Minerals - Nickel-Strunz Grouping):

- +
8.DM.05Morinite
NaCa
 
2
Al
 
2
(PO
 
4
)
 
2
(OH)F
 
4
 · 2H
 
2
O
8.DM.05Esperanzaite
NaCa
 
2
Al
 
2
(AsO
 
4
)
 
2
(OH)F
 
4
 · 2H
 
2
O
8.DM.10Clinotyrolite
Ca
 
2
Cu
 
9
(AsO
 
4
,SO
 
4
)
 
4
(OH,O)
 
10
 · 10H
 
2
O
8.DM.10Tyrolite
Ca
 
2
Cu
 
9
(AsO
 
4
)
 
4
(CO
 
3
)(OH)
 
8
 · 11H
 
2
O
8.DM.15Melkovite
[Ca
 
2
(H
 
2
O)
 
15
Ca(H
 
2
O)
 
6
][Mo
 
8
P
 
2
Fe
3+
3
O
 
36
(OH)]
8.DM.15Betpakdalite-NaCa
[Na
 
2
(H
 
2
O)
 
17
Ca(H
 
2
O)
 
6
][Mo
6+
8
As
5+
2
Fe
3+
3
O
 
34
(OH)
 
3
]
8.DM.20Phosphovanadylite-Ba
Ba[V
4+
4
P
 
2
O
 
8
(OH)
 
8
]·12H2O
8.DM.20Phosphovanadylite-Ca
Ca[V
4+
4
P
 
2
O
 
12
(OH)
 
4
] · 12H
 
2
O
8.DM.25Yukonite
Ca
 
3
Fe
3+
 
(AsO
 
4
)
 
2
(OH)
 
3
 · 5H
 
2
O
8.DM.30Uduminelite
Ca
 
3
Al
 
8
(PO
 
4
)
 
2
O
 
12
 · 2H
 
2
O
8.DM.35Delvauxite
CaFe
 
4
(PO
 
4
,SO
 
4
)
 
2
(OH)
 
8
 · 4-6H
 
2
O not confirmed ·
8.DM.40Santafeite
(Na,Ca,Sr)
 
12
(Mn
2+
 
,Fe
3+
 
,Al,Mg)
 
8
Mn
4+
8
(VO
 
4
)
 
16
(OH,O)
 
20
 · 8H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
22.5.1Vauquelinite
Pb
 
2
Cu(CrO
 
4
)(PO
 
4
)(OH)
22.5.2Embreyite
Pb
 
5
(CrO
 
4
)
 
2
(PO
 
4
)
 
2
 · H
 
2
O
22.5.3Cassedanneite
Pb
 
5
(CrO
 
4
)
 
2
(VO
 
4
)
 
2
 · H
 
2
O
22.5.4Fornacite
Pb
 
2
Cu(CrO
 
4
)(AsO
 
4
)(OH)
22.5.5Molybdofornacite
Pb
 
2
Cu(MoO
 
4
,CrO
 
4
)(AsO
 
4
,PO
 
4
)(OH)
22.5.6Mendozavilite-NaFe
[Na
 
2
(H
 
2
O)
 
15
Fe
3+
 
(H
 
2
O)
 
6
][Mo
 
8
P
 
2
Fe
3+
3
O
 
35
(OH)
 
2
]
22.5.7Paramendozavilite
[KAl
 
4
(H
 
2
O)
 
30
][Mo
 
12
P
 
6
Fe
3+
6
O
 
60
(OH)
 
13
]
22.5.9Betpakdalite-NaCa
[Na
 
2
(H
 
2
O)
 
17
Ca(H
 
2
O)
 
6
][Mo
6+
8
As
5+
2
Fe
3+
3
O
 
34
(OH)
 
3
]
22.5.10Obradovicite-KCu
[K
 
2
(H
 
2
O)
 
17
Cu(H
 
2
O)
 
6
][Mo
 
8
As
 
2
Fe
3+
3
O
 
34
(OH)
 
3
]
22.5.11Melkovite
[Ca
 
2
(H
 
2
O)
 
15
Ca(H
 
2
O)
 
6
][Mo
 
8
P
 
2
Fe
3+
3
O
 
36
(OH)]
22.5.12Rankachite
Ca
 
0.5
(V
4+
 
,V
5+
 
)(W
6+
 
,Fe
3+
 
)
 
2
O
 
8
(OH) · 2H
 
2
O
22.5.13Olmsteadite
KFe
2+
2
(Nb
5+
 
,Ta
5+
 
)(PO
 
4
)
 
2
O
 
2
 · 2H
 
2
O
22.5.14Johnwalkite
K(Mn
2+
 
,Fe
2+
 
,Fe
3+
 
)
 
2
(Nb
5+
 
,Ta
5+
 
)(PO
 
4
)
 
2
O
 
2
 · 2(H
 
2
O,OH)

Other Names for Betpakdalite-CaCa

Other Languages:
German:Betpakdalit
Russian:Бетпакдалит
Spanish:Betpakdalita

Other Information

Health Warning: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-CaCa

Reference List:

- +
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)

American Mineralogist: 47: 172.

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.)

American Mineralogist: 70: 1333.

Moore, P. B. (1992): Betpakdalite unmasked, and a comment on bond valences. Australian Journal of Chemistry 45, 1335-1354.

American Mineralogist: 78: 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.

Internet Links for Betpakdalite-CaCa

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    • Localities for Betpakdalite-CaCa

    The 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.
    Hide Locality List
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Australia
     
    • New South Wales
      • Gough Co.
        • Elsmore
    		No reference listed
        • Kingsgate
    Chile
     
    • Antofagasta Region
      • El Loa Province
        • Calama
          • Chuquicamata District
    • Atacama Region
      • Copiapó Province
        • Tierra Amarilla
          • Pampa Larga district
    		analysed with Edx, Pdf and Microprobe (by dr. Jochen Scluter)
    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 (Knötel; Knödel; Knödlberg) area
    		Lapis 23(4), 18-34 (1998)
    France
     
    • Limousin
      • Haute-Vienne
        • Nantiat
          • Vaulry
    		[MinRec 23:434]
    Queneau Patrice collection MinRec 23:434
    Germany
     
    • Saxony
      • Erzgebirge
        • Schmiedeberg
    		Thomas Witzke
    Japan
     
    • Honshu Island
      • Chugoku region
        • Hiroshima prefecture
          • 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)
    Namibia
     
    • Otjikoto (Oshikoto) Region
      • Tsumeb
    		Schmetzer, K. et al., Neues Jahrbuch Min., Monarshefte 1984, 393-403
    Norway
     
    • Nordland
      • Tysfjord
    		Husdal, T. (2011): Tysfjordgranittens pegmatitter. Stein. 38 (4): 4-35
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2013. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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