Polyhalite R070209



Name: Polyhalite
RRUFF ID: R070209
Ideal Chemistry: K2Ca2Mg(SO4)4·2H2O
Locality: West Texas, Texas, USA
Source: Michael Scott S105883 [view label]
Owner: RRUFF
Description: Colorless to brick red massive
Status: The identification of this mineral has been confirmed by X-ray diffraction.
CHEMISTRY 
RRUFF ID: R070209.2
Sample Description: Microprobe Fragment
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented sample
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Direction of polarization of laser relative to fiducial mark:
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R070209
Wavelength:
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
INFRARED SPECTRUM (Attenuated Total Reflectance) 
RRUFF ID: R070209.1
Sample Description: Powder
Instrument settings: SensIR Durascope on a Nicolet Magna 860 FTIR
Resolution:
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POWDER DIFFRACTION 
RRUFF ID: R070209.1
Sample Description: Powder
Cell Refinement Output: a: 6.9577(4)Å    b: 6.9578(3)Å    c: 8.8894(5)Å
alpha: 104.077(4)°    beta: 101.209(5)°    gamma: 113.914(4)°   Volume: 360.15(3)Å3    Crystal System: triclinic
  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 Polyhalite

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]

Sowerby J (1817) Polyhalite, in Exotic Mineralogy or, Coloured Figures of Foreign Minerals as a Supplement to British Mineralogy, Volume 2 Arding and Merrett London 101-102   [view file]

Stromeyer F (1817) Ein neu entdecktes Metall und Analyse eines neuen Minerals, Journal für Chemie und Physik, 21, 297-306   [view file]

Stromeyer H (1819) Chemische Untersuchung der natürlichen Boraxsäure, des Eisenpecherzes, des Picro-Pharmacoliths und des Polyhalits, eines neuen fossilen-Salzes, Annalen der Physik, 61, 177-189   [view file]

Stromeyer F (1820) Mineralogisch-chemische Untersuchungen über ein neues fossiles Salz, Journal für Chemie und Physik, 29, 389-410   [view file]

Schaller W T, Henderson E P (1932) Mineralogy of drill cores from the potash field of New Mexico and Texas, U.S. Geological Survey Bulletin, 833, 1-124   [view file]

Bindi L (2005) Reinvestigation of polyhalite, K2Ca2Mg(SO4)4·2H2O, Acta Crystallographica, E61, i135-i136

Lane M D (2007) Mid-infrared emission spectroscopy of sulfate and sulfate-bearing minerals, American Mineralogist, 92, 1-18   [view file]