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Name: Alleghanyite RRUFF ID: R060904 Ideal Chemistry: Mn2+5(SiO4)2(OH)2 Locality: Near Bald Knob, Alleghany County, North Carolina, USA Source: Michael Scott S100995 [view label] Owner: Michael Scott Description: Pinkish-brown sub-rounded irregular grains Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
Mineral Group: [ Humite (21) ] | ||
Quick search: [ All Alleghanyite 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: | R060904.9 | ||||||
Sample Description: | Single crystal, powder profile is calculated | ||||||
Cell Refinement Output: |
a: 4.8736(4)Å b: 10.706(1)Å c: 8.2689(8)Å alpha: 108.832(8)° beta: 90° gamma: 90° Volume: 408.34(3)Å3 Crystal System: monoclinic |
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REFERENCES for Alleghanyite | |
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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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Ross C S, Kerr P F (1932) The manganese minerals of a vein near Bald Knob, North Carolina, American Mineralogist, 17, 1-18 [view file] |
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Rogers A F (1935) The chemical formula and crystal system of alleghanyite, American Mineralogist, 20, 25-35 [view file] |
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Rentzeperis P J (1970) The crystal structure of alleghanyite, Mn5[(OH)2|(SiO4)2], Zeitschrift für Kristallographie, 132, 1-18 [view file] |
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Dunn P J (1985) Manganese humites and leucophoenicites from Franklin and Sterling Hill, New Jersey: Parageneses, compositions, and implications for solid solution limits, American Mineralogist, 70, 379-387 [view file] |
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Francis C A (1985) Crystal structure refinement of magnesian alleghanyite, American Mineralogist, 70, 182-185 [view file] |
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