Important Update News
The RRUFF Project is being updated to improve its interface and content. The beta version of the update is accessible to the public at RRUFF.net. New data is only being added to the beta site. Please note that it is in development, and some components are not functional. Existing RRUFF.info links will resolve to the new site after RRUFF.net is officially released.
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Name: Pentagonite RRUFF ID: R120136 Ideal Chemistry: CaV4+OSi4O10·4H2O Locality: Wagholi, Poona, Maharashtra State, India Source: Marcus Origlieri [view label] Owner: RRUFF Description: Bright blue blades Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction. |
RAMAN SPECTRUM | ||||||||||||
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BROAD SCAN WITH SPECTRAL ARTIFACTS | ||||||||||||
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POWDER DIFFRACTION | |||||||
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RRUFF ID: | R120136.9 | ||||||
Sample Description: | Single crystal, powder profile is calculated | ||||||
Cell Refinement Output: |
a: 10.390(1)Å b: 14.102(3)Å c: 9.005(2)Å alpha: 90° beta: 90° gamma: 90° Volume: 1319.4(5)Å3 Crystal System: orthorhombic |
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REFERENCES for Pentagonite | |
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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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Evans H T (1973) The crystal structures of cavansite and pentagonite, American Mineralogist, 58, 412-424 [view file] |
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Staples L W, Evans H T, Lindsay J R (1973) Cavansite and pentagonite, new dimorphous calcium vanadium silicate minerals from Oregon, American Mineralogist, 58, 405-411 [view file] |
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Ishida N, Kimata M, Nishida N, Hatta T, Shimizu M, Akasaka T (2009) Polymorphic relation between cavansite and pentagonite: Genetic implications of oxonium ion in cavansite, Journal of Mineralogical and Petrological Sciences, 104, 241-252 [view file] |
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