Betpakdalite-CaMg R060242

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Record 477 of 4216  

Name: Betpakdalite-CaMg
RRUFF ID: R060242
Ideal Chemistry: [Ca2(H2O)17Mg(H2O)6][Mo6+8As5+2Fe3+3O36(OH)]
Locality: Tsumeb mine, Tsumeb, Otavi District, Oshikoto, Namibia
Source: William W. Pinch [view label]
Owner: RRUFF
Description: Yellow short prismatic crystals
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Group: [ Betpakdalite (4) ]
RRUFF ID: R060242.2
Sample Description: Microprobe Fragment
Measured Chemistry: Mg1.00Ca2.00Fe3+3.00(Mo7.89W0.11)Σ=8((As1.94P0.06)Σ=1O4)2O28(OH)·23H2O ; H not mesured but estimated by difference and stoichiometry; the lighter areas are richer in W.
Microprobe Data File: [ Download Excel File ]
Sample Description: Unoriented sample

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RRUFF ID: R060242
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
RRUFF ID: R060242.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 19.40(1)Å    b: 11.043(6)Å    c: 15.176(8)Å
alpha: 90°    beta: 131.327(8)°    gamma: 90°   Volume: 2442(3)Å3    Crystal System: monoclinic
  File Type Information Close
Calculated diffraction file.

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Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

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REFERENCES for Betpakdalite-CaMg

American Mineralogist Crystal Structure Database Record: [view record]

Anthony J W, Bideaux R A, Bladh K W, and Nichols M C (1990) Handbook of Mineralogy, Mineral Data Publishing, Tucson Arizona, USA, by permission of the Mineralogical Society of America. [view file]

Williams P A, Hatert F, Pasero M, Mills S J (2011) IMA Commission on new minerals, nomenclature and classification (CNMNC) Newsletter 10. New minerals and nomenclature modifications approved in 2011, Mineralogical Magazine, 75, 2549-2561   [view file]

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   [view file]