| Reference Type | Journal (article/letter/editorial) |
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| Title | Garavellite, FeSbBiS4, a new mineral from the Cu-Fe deposit of Valle del Frigido in the Apuane Alps, northern Tuscany, Italy |
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| Journal | Mineralogical Magazine | ISSN | 0026-461X |
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| Authors | Gregorio, F. | Author |
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| Lattanzi, P. | Author |
| Tanelli, G. | Author |
| Vurro, F. | Author |
| Year | 1979 (March) | Volume | 43 |
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| Page(s) | 99-102 | Issue | 325 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_43/43-325-99.pdf+ |
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| DOI | doi:10.1180/minmag.1979.043.325.05Search in ResearchGate |
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| Mindat Ref. ID | 2984 | Long-form Identifier | mindat:1:5:2984:5 |
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| GUID | f784eab3-c663-4e1f-bbb6-2546c10a71d2 |
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| Full Reference | Gregorio, F., Lattanzi, P., Tanelli, G., Vurro, F. (1979) Garavellite, FeSbBiS4, a new mineral from the Cu-Fe deposit of Valle del Frigido in the Apuane Alps, northern Tuscany, Italy. Mineralogical Magazine, 43 (325) 99-102 doi:10.1180/minmag.1979.043.325.05 |
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| Plain Text | Gregorio, F., Lattanzi, P., Tanelli, G., Vurro, F. (1979) Garavellite, FeSbBiS4, a new mineral from the Cu-Fe deposit of Valle del Frigido in the Apuane Alps, northern Tuscany, Italy. Mineralogical Magazine, 43 (325) 99-102 doi:10.1180/minmag.1979.043.325.05 |
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| In | (1979, March) Mineralogical Magazine Vol. 43 (325) Mineralogical Society |
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| Abstract/Notes | SummaryGaravellite occurs in polished sections, as small aggregates, up to 200 Β΅m across, of anhedral crystals, usually in direct contact with tetrahedrite, Sb-rich bismuthinite, chalcopyrite, and siderite. Chemical formula Fe0,80Cu0.02Sb1.13Bi0.78As0.01S4 on the basis of S = 4, or ideally FeSbBiS4.The mineral has an orthorhombic unit cell with a = 11.439, b = 14.093, c = 3.754 Γ
, Z = 4; calculated density 5.64 gm/cm3. Important diffraction lines are 14.00 (m) 010, 7.08 (m) 020, 3.62 (vs) 230, 3.49 (m) 040, 3.34 (m) 320, 3.20 (vs) 121, 3.10 (m) 201, 2.98 (s) 240, 2.89 (s) 221, 2.63 (vs) 311, 2.51 (vs) 250, 2.16 (m) 421, 1.677 (m) 312. In reflected light it is grey with a brown-olive tint similar to that of tetrahedrite. Bireftectance is distinct and anisotropism is also strong, from yellowish-green to bluish grey. Vickers hardness (50 g load) 212β22 kg/mm2. Reflectance in air: 470 nm R1 = 33.5β34.7%, R2 = 40.5β 42.8%; 546 nm 32.8β34.7%, 40.2β42.0%; 589 nm 32.6β 33.7%, 39.3β41.0%; 650 nm 32.4β34.6%, 38.4β41.0%.The mineral and name have been approved before publication by the Commission on New Minerals and Mineral Names, IMA.Frigidite, the so-called nickel-bearing variety of tetrahedrite found at this locality, is shown to be an intergrowth of tetrahedrite and Ni-bearing minerals. |
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