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Name: Holtite RRUFF ID: R061049 Ideal Chemistry: (Ta0.6◻0.4)Al6BSi3O18 Locality: Kola Peninsula, U.S.S.R. Source: Michael Scott S100998 [view label] Owner: RRUFF Description: Blocky crystals; as pseudohexagonal elongated needles, light buff to cream-buff or deep olive-buff in color. Crystals are twinned by a 2-fold rotation around [010]. Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction. |
Mineral Group: [ Dumortierite (5) ] |
RAMAN SPECTRUM | ||||||||||||
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BROAD SCAN WITH SPECTRAL ARTIFACTS | ||||||||||||
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POWDER DIFFRACTION | |||||||
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RRUFF ID: | R061049.9 | ||||||
Sample Description: | Single crystal, powder profile is calculated | ||||||
Cell Refinement Output: |
a: 4.6918(8)Å b: 11.880(3)Å c: 20.372(5)Å alpha: 90° beta: 90° gamma: 90° Volume: 1135.5(2)Å3 Crystal System: orthorhombic |
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REFERENCES for Holtite | |
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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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Pryce M W (1971) Holtite: a new mineral allied to dumortierite, Mineralogical Magazine, 38, 21-25 [view file] |
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Fleischer M (1972) New mineral names, American Mineralogist, 57, 1552-1561 [view file] |
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Hoskins B F, Mumme W G, Pryce M W (1989) Holtite, (Si2.25Sb0.75)B[Al6(Al0.43Ta0.27◻0.30)O15(O,OH)2.25]: crystal structure and crystal chemistry, Mineralogical Magazine, 53, 457-463 [view file] |
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Jambor J L, Grew E S (1990) New mineral names, American Mineralogist, 75, 931-937 [view file] |
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Kazantsev S S, Pushcharovsky D Y, Pasero M, Merlino S, Zubkova N V, Kabalov Y K ,Voloshin A V (2005) Crystal structure of holtite I, Crystallography Reports, 50, 42-47 |
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Kazantsev S S, Zubkova N V, Voloshin A V (2006) Refinement of composition and structure of holtite I, Crystallography Reports, 51, 412-413 |
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Locock A J, Piilonen P C, Ercit T S, Rowe R (2006) New mineral names, American Mineralogist, 91, 216-224 [view file] |
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Zubkova N V, Pushcharovskii P Y, Kabalov Y K, Kazantsev S S, Voloshin A V (2006) Crystal structure of holtite II, Crystallography Reports, 51, 16-22 [view file] |
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Groat L A, Grew E S, Evans R J, Pieczka A, Ercit T S (2009) The crystal chemistry of holtite, Mineralogical Magazine, 73, 1033-1050 [view file] |
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Evans R J, Fyfe C A, Groat L A, Lam A E (2012) MAS NMR measurements and ab initio calculations of the 29Si chemical shifts in dumortierite and holtite, American Mineralogist, 97, 329-340 [view file] |
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Evans R J, Groat L A (2012) Structure and topology of dumortierite and dumortierite-like materials, The Canadian Mineralogist, 50, 1197-1231 [view file] |
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Groat L A, Evans R J, Grew E S, Pieczka A (2012) The crystal chemistry of As- and Sb-bearing dumortierite, The Canadian Mineralogist, 50, 855-872 [view file] |
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Pieczka A, Evans R J, Grew E S, Groat L A, Ma C, Rossman G R (2013) The dumortierite supergroup. I. A new nomenclature for the dumortierite and holtite groups, Mineralogical Magazine, 77, 2825-2839 [view file] |
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