登录注册
主页关于 MindatMindat手册Mindat的历史版权Who We Are联系我们于 Mindat.org刊登广告
捐赠给 MindatCorporate Sponsorship赞助板页已赞助的板页在 Mindat刊登 广告的广告商于 Mindat.org刊登广告
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe Elements书籍及杂志
搜索矿物的性质搜索矿物的化学Advanced Locality Search随意显示任何一 种矿物Random Locality使用minID搜索邻近产地Search Articles搜索词汇表更多搜索选项
搜索:
矿物名称:
地区产地名称:
关键字:
 
Mindat手册添加新照片Rate Photos产区编辑报告Coordinate Completion Report添加词汇表项目
Mining Companies统计会员列表Mineral Museums矿物展及活动The Mindat目录表设备设置
照片搜索Photo Galleries今天最新的照片昨天最新的照片用户照片相集过去每日精选照片相集Mineral Photography

Betpakdalite-CaMg

This page is currently not sponsored. Click here to sponsor this page.
Hide all sections | Show all sections

About Betpakdalite-CaMgHide

Formula:
[Ca2(H2O)17Mg(H2O)6][Mo8As2Fe3+3O36(OH)]
Colour:
Yellow
Lustre:
Sub-Adamantine, Vitreous
Hardness:
Specific Gravity:
2.98
Crystal System:
Monoclinic
Name:
First recognized as a potential hypothetical member of the betpakdalite group (IMA 10-E). In 2012 it was approved by IMA as a valid species.
First found in the 35th level of the Tsumeb Mine, Namibia.


Classification of Betpakdalite-CaMgHide

Approved
Approval Year:
2011
First Published:
2012
8.DM.

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

Physical Properties of Betpakdalite-CaMgHide

Sub-Adamantine, Vitreous
Transparency:
Transparent
Colour:
Yellow
Streak:
Colorless to very pale yellow
Hardness:
3½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
{001}
Fracture:
Irregular/Uneven
Density:
2.98(4) g/cm3 (Measured)    2.944 g/cm3 (Calculated)

Optical Data of Betpakdalite-CaMgHide

Type:
Biaxial (+)
RI values:
nα = 1.818(3) nβ = 1.824(3) nγ = 1.846(3)
2V:
Measured: 55° (2), Calculated: 55.7°
Max Birefringence:
δ = 0.028
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r > v, strong
Pleochroism:
Non-pleochroic

Chemical Properties of Betpakdalite-CaMgHide

Formula:
[Ca2(H2O)17Mg(H2O)6][Mo8As2Fe3+3O36(OH)]
IMA Formula:
[Ca2(H2O)17Mg(H2O)6][Mo6+8As5+2Fe3+3O36(OH)]

Crystallography of Betpakdalite-CaMgHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 19.5336(7) Å, b = 11.0637(4) Å, c = 15.2559(11) Å
β = 131.528(9)°
Ratio:
a:b:c = 1.766 : 1 : 1.379
Unit Cell V:
2468.3 ų
Morphology:
Pseudo-octaedra. Forms observed: {001}, {1-10} and [20-1}.
Twinning:
Uncommon. Contact twins on (001) by rotation of 120° about [102] and as pentetration twins by rotation of 120° about [102].

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
11.568Å(25)
8.971Å(100)
7.341Å(34)
3.656Å(33)
3.143Å(26)
2.965Å(44)
2.817Å(35)
2.662Å(31)

Type Occurrence of Betpakdalite-CaMgHide

General Appearance of Type Material:
Yellow pseudo-octaedra (up to ~1mm) included in and on scorodite
Place of Conservation of Type Material:
Natural History Museum of Los Angeles County, Los Angeles, California, USA, catalogue numbers 63327 and 63328
Associated Minerals at Type Locality:

Synonyms of Betpakdalite-CaMgHide

Relationship of Betpakdalite-CaMg to other SpeciesHide

Other Members of this group:
Betpakdalite-CaCa[Ca2(H2O)17Ca(H2O)6][Mo6+8As5+2Fe3+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

Related Minerals - Nickel-Strunz GroupingHide

8.DM.Betpakdalite-FeFe[Fe3+2 (H2O)15(OH)2Fe3+(H2O)6][Mo8As2Fe3+3 O37]Mon. 2/m : B2/m
8.DM.05MoriniteNaCa2Al2(PO4)2(OH)F4 · 2H2OMon. 2/m
8.DM.05EsperanzaiteNaCa2Al2(AsO4)2(OH)F4 · 2H2OMon.
8.DM.10TyroliteCa2Cu9(AsO4)4(CO3)(OH)8 · 11H2OMon. 2/m
8.DM.15Betpakdalite-CaCa[Ca2(H2O)17Ca(H2O)6][Mo6+8As5+2Fe3+3O36(OH)]Mon. 2/m : B2/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 confirmedAmor.
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)

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-CaMgHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
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.
Kampf, A.R., Mills, S.J. (2011) Betpakdalite-CaMg, IMA 2011-034. CNMNC Newsletter No. 10, October 2011, page 2556.
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., and Pinch, W.W. (2012) The heteromolybdate family: structural relations, nomenclature scheme and new species. Mineralogical Magazine: 76(5): 1175-1207.

Internet Links for Betpakdalite-CaMgHide

Localities for Betpakdalite-CaMgHide

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
Rankin, J., Lawrence, L.J., Sharpe, J.L., Williams, P.A. (2002) Rare secondary bismuth, tungsten and molybdenum minerals from Elsmore, New England district of New South Wales. Australian Journal of Mineralogy, 8:1, 55-60.
Germany
 
  • Saxony
    • Sächsische Schweiz-Osterzgebirge
      • Dippoldiswalde
Gunnar Färber
Namibia (TL)
 
  • Oshikoto Region
    • Tsumeb
Kampf, A.R. and Mills, S.J. (2011): Betpakdalite-CaMg, IMA 2011-034. CNMNC Newsletter No. 10, October 2011, page 2556
Russia
 
  • Zabaykalsky Krai
    • Chitinskaya Oblast
      • Nerchinsk (Nertschinsk)
        • Nerchinsk Gem mines
          • Adun-Cholon Range
Kasatkin, A. V., Klopotov, K. I., & Plasil, J. (2014). Supergene Minerals of Sherlova Gora. Mineralogical Almanac, Ltd. Lakewood, CO80227, USA, 19, 94-139.
 
矿物 and/or 产地  
版权所有© mindat.org1993年至2020年,除了规定的地方。 Mindat.org全赖于全球数千个以上成员和支持者们的参与。
隐私政策 - 条款和条款细则 - 联络我们 Current server date and time: 2020.3.30 15:44:42 Page generated: 2020.2.22 10:09:48
Go to top of page