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Name: Bertrandite RRUFF ID: R060800 Ideal Chemistry: Be4Si2O7(OH)2 Locality: Golconda mine, Governador Valadares, Minas Gerais, Brazil Source: Bob Jenkins [view label] Owner: RRUFF Description: Colorless pseudohexagonal prisms Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
Mineral Group: [ Not in a structural group (133) ] | ||
Quick search: [ All Bertrandite 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: | R060800.9 | ||||||
Sample Description: | Single crystal, powder profile is calculated | ||||||
Cell Refinement Output: |
a: 8.726(4)Å b: 15.01(1)Å c: 4.532(3)Å alpha: 90° beta: 90° gamma: 90° Volume: 595.6(1)Å3 Crystal System: orthorhombic |
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REFERENCES for Bertrandite | |
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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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Damour A A (1883) Note et analyse sur le nouveau miné des environs de Nantes, Bulletin de la Société Minéralogique de France, 6, 252-254 [view file] |
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Solov'eva L P, Belov N V (1965) Precise determination of the crystal structure of bertrandite Be4[Si2O7](OH)2, Soviet Physics - Crystallography, 9, 458-460 [view file] |
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Morgan W C, (1967) Genthelvite and bertrandite from the Cairngorm Mountains, Scotland, Mineralogical Magazine, 36, 60-63 [view file] |
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Hazen R M, Au A Y (1986) High-pressure crystal chemistry of phenakite (Be2SiO4) and bertrandite (Be4Si2O7(OH)2), Physics and Chemistry of Minerals, 13, 69-78 |
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Hofmeister A M, Hoering T C, Virgo D (1987) Vibrational spectroscopy of of beryllium aluminosilicates: heat capacity calculations from band assignments, Physics and Chemistry of Minerals, 14, 205-224 |
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Giuseppetti G, Tadini C, Mattioli V (1992) Bertrandite: Be4Si2O7(OH)2, from Val Vigezzo (NO) Italy: the X-ray structural refinement, Neues Jahrbuch für Mineralogie, Monatshefte, 1992, 13-19 |
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Uher P, Ozdín D, Bačík P, Števko M, Ondrejka M, Rybnikova O, Chládek S, Fridrichová J, Pršek J, Puškelová L (2022) Phenakite and bertrandite: products of post-magmatic alteration of beryl in granitic pegmatites (Tatric Superunit, Western Carpathians, Slovakia), Mineralogical Magazine, 86, 715-729 |
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