Keystoneite R070661

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Record 2 of 2  

Name: Keystoneite
RRUFF ID: R070661
Ideal Chemistry: Mg0.5NiFe3+(Te4+O3)3·4H2O
Locality: McAlpine mine, Moccasin, Tuolumne County, California, USA
Source: Michael Scott S106029 [view label]
Owner: RRUFF
Description: Clusters of greenish yellow acicular microcrystals associated with quartz and pyrite.
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.
Mineral Group: [ Zemannite (3) ]
Quick search: [ All Keystoneite samples (2) ]
Sample Description: Unoriented sample

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RRUFF ID: R070661
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
RRUFF ID: R070661.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 9.363(4)Å    b: 9.363(4)Å    c: 7.615(4)Å
alpha: 90°    beta: 90°    gamma: 120°   Volume: 578.2(1)Å3    Crystal System: hexagonal
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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 Keystoneite

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]

Genth F A (1877) Contribution from the laboratory of the University of Pennsylvania: Ferrotellurite, a new mineral, Proceedings of the American Philosophical Society, 17, 119-119   [view file]

Back M E, Roberts A C, LePage Y, Mandarino J A (1988) Keystoneite, a new tellurite from the Keystone mine, Colorado, U.S.A., Abstracts of the Joint Annual Meeting of the Geological and Mineralogical Associations of Canada, 13, A4-A4   [view file]

Miletich R (1995) Crystal chemistry of the microporous tellurite minerals zemannite and kinichilite, Mg0.5[Me2+Fe3+(TeO3)3]4·5H2O, (Me2+=Zn;Mn), European Journal of Mineralogy, 7, 509-523

Missen O P, Back M E, Mills S J, Roberts A C, LePage Y, Pinch W W, Mandarino J A (2021) Crystal chemistry of zemannite-type structures: III. Keystoneite, the Ni2+-analogue of zemannite, and ferrotellurite discredited, The Canadian Mineralogist, 59, 355-364