Moore, Paul B., Carlos do Prado Barbosa, , Gaines, Richard V. (1978) Bahianite, Sb3Al5O14(OH)2, a new species. Mineralogical Magazine, 42 (322) 179-182 doi:10.1180/minmag.1978.042.322.02
| Reference Type | Journal (article/letter/editorial) | ||
|---|---|---|---|
| Title | Bahianite, Sb3Al5O14(OH)2, a new species | ||
| Journal | Mineralogical Magazine | ISSN | 0026-461X |
| Authors | Moore, Paul B. | Author | |
| Carlos do Prado Barbosa, | Author | ||
| Gaines, Richard V. | Author | ||
| Year | 1978 (June) | Volume | 42 |
| Issue | 322 | ||
| Publisher | Mineralogical Society | ||
| Download URL | https://rruff.info/doclib/MinMag/Volume_42/42-322-179.pdf+ | ||
| DOI | doi:10.1180/minmag.1978.042.322.02Search in ResearchGate | ||
| Generate Citation Formats | |||
| Mindat Ref. ID | 2893 | Long-form Identifier | mindat:1:5:2893:0 |
| GUID | 0 | ||
| Full Reference | Moore, Paul B., Carlos do Prado Barbosa, , Gaines, Richard V. (1978) Bahianite, Sb3Al5O14(OH)2, a new species. Mineralogical Magazine, 42 (322) 179-182 doi:10.1180/minmag.1978.042.322.02 | ||
| Plain Text | Moore, Paul B., Carlos do Prado Barbosa, , Gaines, Richard V. (1978) Bahianite, Sb3Al5O14(OH)2, a new species. Mineralogical Magazine, 42 (322) 179-182 doi:10.1180/minmag.1978.042.322.02 | ||
| In | (1978, June) Mineralogical Magazine Vol. 42 (322) Mineralogical Society | ||
| Abstract/Notes | SummaryBahianite, Sb3Al5O14(OH)2-Sb3Al5(Al, Be, Si)<2O16, monoclinic, a 9·406(6), b 11·541(8), c 4·410(3) Å, β 90·94(3)°, Z = 2, space group C2/m, is a new species from the Paramirim region, south central Bahia state, Brazil. It occurs as water-worn pebbles (‘favas’) with quartz, andalusite, kyanite, diaspore, eskolaite, cassiterite, etc. Colour tan to cream, crystals in vugs colourless, tan or pale violet. Specific gravity ranges from 4·89 to 5·46 (5·26 g cm−3 for Sb3Al5O14(OH)2); hardness 9, cleavage {100} perfect, lustre adamantine, biaxial (−), 2V large, α = 1·81, β = 1·87, γ = 1·92, dispersion r > v.The crystal structure represents a new type and is based on hexagonal close-packed oxygens. It is related to the structure of simpsonite Ta3Al14O13(OH). | ||
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