Germanite R050439

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Record 1545 of 4043  

Name: Germanite
RRUFF ID: R050439
Ideal Chemistry: Cu13Fe2Ge2S16
Locality: Tsumeb mine, Tsumeb, Otavi District, Oshikoto, Namibia
Source: University of Arizona Mineral Museum 10953 [view label]
Owner: RRUFF
Description: Black with purple hints, massive
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Groups: [ Germanite (4) ] [ Sphalerite (35) ]
CHEMISTRY 
RRUFF ID: R050439.2
Sample Description: Microprobe Fragment
Measured Chemistry: (Cu11.61Fe2+0.87Zn0.52)Σ=13Fe2.00(Ge1.71As0.29)Σ=2S16.00 ; = dark-gray phase. (Cu10.59Zn0.41)Σ=11Fe4.00(Ge1.46As0.54)Σ=2S16.00 = lighter-gray phase. Lightest phase is PbS.
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented sample, burns with too much intensity from 780nm laser
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R050439
Wavelength:
Sample Description: Unoriented sample, burns with too much intensity from 780nm laser
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
INFRARED SPECTRUM (Attenuated Total Reflectance) 
RRUFF ID: R050439.1
Instrument settings: SensIR Durascope on a Nicolet Magna 860 FTIR
Resolution:
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POWDER DIFFRACTION 
RRUFF ID: R050439.1
Sample Description: Powder, with minor tennantite (cubic: a=10.24)
Cell Refinement Output: a: 10.6110(9)Å    b: 10.6110(9)Å    c: 10.6110(9)Å
alpha: 90°    beta: 90°    gamma: 90°   Volume: 1194.7(3)Å3    Crystal System: cubic
  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.

  File Type Information Close
Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

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REFERENCES for Germanite

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]

Pufahl O (1922) “Germanit” ein germanium-mineral und -erz von Tsumeb, Südwest-Afrika, Metall und Erz, 19, 324-325   [view file]

Wherry E T (1923) New minerals: new species, American Mineralogist, 8, 115-116   [view file]

Murdoch J (1953) X-ray investigation of colusite, germanite, and reniérite, American Mineralogist, 38, 794-801   [view file]

Lévy C (1967) Contribution a la minéralogie des sulfures de cuivre du type Cu3XS4, Mémoires du Bureau de Recherches Géologiques et Minières, 54, 1-178   [view file]

Fleischer M (1968) New mineral names, American Mineralogist, 53, 2103-2106   [view file]

Fleischer M (1971) New mineral names, American Mineralogist, 56, 1487-1489   [view file]

Tettenhorst R T, Corbato C E (1984) Crystal structure of germanite, Cu26Ge4Fe4S32, determined by powder X-ray diffraction, American Mineralogist, 69, 943-947   [view file]

Jambor J L, Vanko D A (1989) New mineral names, American Mineralogist, 74, 946-951   [view file]

Frank-Kamenetskaya O V, Rozhdenstvenskaya I V, Yanulova L A (2002) New data on the crystal structures of colusites and arsenosulvanites, Journal of Structural Chemistry, 43, 89-100

Nenasheva S N (2003) On the chemical composition of germanite, New Data on Minerals. Moscow, 38, 34-40   [view file]