Keystoneite R070660

Browse Search Results 
<< Previous |  Back to Search Results |  Next >> 
Record 279 of 459  

Name: Keystoneite
RRUFF ID: R070660
Ideal Chemistry: Mg0.5NiFe3+(Te4+O3)3·4H2O
Locality: McAlpine mine, Moccasin, Tuolumne County, California, USA
Source: Michael Scott S105215 [view label]
Owner: RRUFF
Description: Clusters of greenish yellow acicular microcrystals associated with quartz and pyrite.
Status: The identification of this mineral is not yet confirmed.
Mineral Group: [ Zemannite (3) ]
Quick search: [ All Keystoneite samples (2) ]
Sample Description: Unoriented sample

  To download sample data,
  please select a specific
  orientation angle.

Direction of polarization of laser relative to fiducial mark:
X Min:    X Max:    X Sort:
RRUFF ID: R070660
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 40% of 150mW
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