Johannsenite R150013

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Record 66 of 79  


Name: Johannsenite
RRUFF ID: R150013
Ideal Chemistry: CaMnSi2O6
Locality: Wessels mine, Kalahari Manganese field, South Africa
Source: Paul Botha [view label]
Owner: RRUFF
Description: Pale blue, massive, epimorphic
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Group: [ pyroxene (79) ]
Quick search: [ All Johannsenite samples (2) ]
CHEMISTRY 
RRUFF ID: R150013.2
Sample Description: Microprobe Fragment
Measured Chemistry: Ca1.00Mn2+1.02Si1.99O6
Microprobe Data File: [ Download Excel File ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented Raman on the primary sample
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R150013
Wavelength:
Sample Description: Unoriented Raman on the primary sample
Instrument settings: Thermo Almega XR 532nm @ 10% of 150mW
POWDER DIFFRACTION 
RRUFF ID: R150013.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 9.912(5)Å    b: 9.122(5)Å    c: 5.261(2)Å
alpha: 90°    beta: 104.86(3)°    gamma: 90°   Volume: 459.8(1)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 Johannsenite

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]

Johannsenite, a new manganese pyroxene (1938) Schaller W T, American Mineralogist, 23, 575-582   [view file]

Hutton C O (1956) Manganpyrosmalite, bustamite, ferroan johannsenite from Broken Hill, New South Wales, Australia, American Mineralogist, 41, 581-591   [view file]

Cameron M, Papike J J (1981) Structural and chemical variations in pyroxenes, American Mineralogist, 66, 1-50   [view file]

Morimoto N (1988) Nomenclature of pyroxenes, Mineralogical Magazine, 52, 535-550   [view file]

Nakano T (1991) An antipathetic relation between the hedenbergite and johannsenite components in skarn clinopyroxene from the Kagata tungsten deposit, central Japan, The Canadian Mineralogist, 29, 427-434   [view file]

Makreski P, Jovanovski G, Gajović A, Biljan T, Angelovski D, Jaćimović R (2006) Minerals from Macedonia. XVI. Vibrational spectra of some common appearing pyroxenes and pyroxenoids, Journal of Molecular Structure, 788, 102-114

Nestola F, Boffa Ballaran T, Angel RJ, Zhao J, Ohashi H (2010) High-pressure behavior of Ca/Na clinopyroxenes: The effect of divalent and trivalent 3d-transition elements, American Mineralogist, 95, 832-838