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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 (81) ] | ||
Quick search: [ All Johannsenite samples (2) ] |
CHEMISTRY | ||||||||||
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RAMAN SPECTRUM | ||||||||||||
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BROAD SCAN WITH SPECTRAL ARTIFACTS | ||||||||||||
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POWDER DIFFRACTION | |||||||
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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 |
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REFERENCES for Johannsenite | |
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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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Johannsenite, a new manganese pyroxene (1938) Schaller W T, American Mineralogist, 23, 575-582 [view file] |
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Hutton C O (1956) Manganpyrosmalite, bustamite, ferroan johannsenite from Broken Hill, New South Wales, Australia, American Mineralogist, 41, 581-591 [view file] |
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Cameron M, Papike J J (1981) Structural and chemical variations in pyroxenes, American Mineralogist, 66, 1-50 [view file] |
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Morimoto N (1988) Nomenclature of pyroxenes, Mineralogical Magazine, 52, 535-550 [view file] |
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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] |
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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 |
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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 |
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