Talmessite R080007

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Record 16 of 16  

Name: Talmessite
RRUFF ID: R080007
Ideal Chemistry: Ca2Mg(AsO4)2·2H2O
Locality: Tsumeb mine, Tsumeb, Otavi District, Oshikoto, Namibia
Source: William W. Pinch [view label] [view label]
Owner: RRUFF
Description: Pale yellow to colorless crystals
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Group: [ fairfieldite (16) ]
Quick search: [ All Talmessite samples (3) ]
RRUFF ID: R080007.2
Sample Description: Microprobe Fragment
Measured Chemistry: Ca2.00(Mg0.99Fe0.01)Σ=1(As1.00O4)2·1.98H2O; trace amounts of P; H2O estimated by difference
Microprobe Data File: [ Download Excel File ]
Sample Description: Unoriented sample

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RRUFF ID: R080007
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
RRUFF ID: R080007.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 5.887(1)Å    b: 6.984(2)Å    c: 5.562(1)Å
alpha: 97.37(1)°    beta: 109.010(9)°    gamma: 108.027(9)°   Volume: 198.8(1)Å3    Crystal System: triclinic
  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 Talmessite

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]

Fleischer M (1957) New mineral names, American Mineralogist, 42, 580-586   [view file]

Bariand P, Herpin P (1960) Un arséniate de calcium et de magnésium, isomorphe de la β rosélite, Bulletin de la Société Française de Minéralogie et de Cristallographie, 83, 118-121   [view file]

Fleischer M (1960) New mineral names, American Mineralogist, 45, 1313-1317   [view file]

Pierrot R (1964) Contribution à la minéralogie des arséniates calciques et calcomagnésiens naturels, Bulletin de la Société Française de Minéralogie et de Cristallographie, 87, 169-211   [view file]

Fleischer M (1965) New mineral names, American Mineralogist, 50, 805-813   [view file]

Catti M, Ferraris G, Ivaldi G (1977) Hydrogen bonding in the crystalline state. Structure of talmessite, Ca2(Mg,Co)(AsO4)2·2H2O, and crystal chemistry of related minerals, Bulletin de la Société Française de Minéralogie et de Cristallographie, 100, 230-236   [view file]

Keller P, Hess H, Riffel H (1981) Die kristallstrukturen von zwei neuen calcium-zink-arsenat-mineralen von Tsumeb/Nambia, Zeitschrift für Kristallographie, 156, 70-71   [view file]

Nickel E H, Mandarino J A (1987) Procedures involving the IMA Commission on New Minerals and Mineral Names and guidelines on mineral nomenclature, American Mineralogist, 72, 1031-1042   [view file]

Fleck M, Kolitsch U, Hertweck B (2002) Natural and synthetic compounds with kröhnkite-type chains: review and classification, Zeitschrift für Kristallographie, 217, 435-443

Joswig W, Paulus E F, Liebscher B (2004) Crystal structure of dicalcium (cobalt,magnesium) diarsenate dihydrate, Ca2(Co0.532Mg0.468)[AsO4]2·2H2O, hydrogen bonding in talmessite, Zeitschrift für Kristallographie, 219, 341-342

Frost R L (2009) Raman and infrared spectroscopy of arsenates of the roselite and fairfieldite mineral subgroups, Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy, 71, 1788-1794