Pararobertsite R120119

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.
Sample Description: Unoriented sample

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RRUFF ID: R120119
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 50% of 150mW
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
  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 Pararobertsite

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]

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]

Jambor J L, Puziewicz J (1990) New mineral names, American Mineralogist, 75, 1209-1216   [view file]

Kampf A R (2000) The crystal structure of pararobertsite and its relationship to mitridatite, American Mineralogist, 85, 1302-1306   [view file]