Important Update News
The RRUFF Project is being updated to improve its interface and content. The beta version of the update is accessible to the public at RRUFF.net. New data is only being added to the beta site. Please note that it is in development, and some components are not functional. Existing RRUFF.info links will resolve to the new site after RRUFF.net is officially released.
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Name: Pararobertsite RRUFF ID: R120119 Ideal Chemistry: Ca2Mn3+3(PO4)3O2·3H2O Locality: Tip Top mine, Custer, South Dakota, USA Source: Thomas A. Loomis. Anthony R. Kampf provided a few crystals (Kampf 2000). [view label] Owner: RRUFF Description: Spherical aggregate of brown platy crystals on colorless bobdownsite Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
RAMAN SPECTRUM | ||||||||||||
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BROAD SCAN WITH SPECTRAL ARTIFACTS | ||||||||||||
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POWDER DIFFRACTION | |||||||
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RRUFF ID: | R120119.9 | ||||||
Sample Description: | Single crystal, powder profile is calculated | ||||||
Cell Refinement Output: |
a: 8.826(2)Å b: 13.105(3)Å c: 11.084(2)Å alpha: 90° beta: 101.09(3)° gamma: 90° Volume: 1258.1(6)Å3 Crystal System: monoclinic |
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REFERENCES for Pararobertsite | |
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American Mineralogist Crystal Structure Database Record: [view record] |
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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] |
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Roberts A C, Sturman B D, Dunn P J, Roberts W L (1989) Pararobertsite, Ca2Mn3+3(PO4)3O2·3H2O, a new mineral species from the Tip Top pegmatite, Custer County, South Dakota, and its relationship to robertsite, The Canadian Mineralogist, 27, 451-455 [view file] |
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Jambor J L, Puziewicz J (1990) New mineral names, American Mineralogist, 75, 1209-1216 [view file] |
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Kampf A R (2000) The crystal structure of pararobertsite and its relationship to mitridatite, American Mineralogist, 85, 1302-1306 [view file] |
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