| Reference Type | Journal (article/letter/editorial) |
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| Title | Taneyamalite, (Na,Ca)(Mn2+,Mg,Fe3+,Al)12Si12(O,OH)44, a new mineral from the Iwaizawa mine, Saitama Prefecture, Japan |
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| Journal | Mineralogical Magazine | ISSN | 0026-461X |
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| Authors | Matsubara, Satoshi | Author |
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| Year | 1981 (March) | Volume | 44 |
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| Page(s) | 51-53 | Issue | 333 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_44/44-333-51.pdf+ |
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| DOI | doi:10.1180/minmag.1981.44.333.06Search in ResearchGate |
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| Generate Citation Formats |
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| Classification | Not set | LoC | Not set |
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| Mindat Ref. ID | 3218 | Long-form Identifier | mindat:1:5:3218:0 |
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| GUID | 0 |
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| Full Reference | Matsubara, Satoshi (1981) Taneyamalite, (Na,Ca)(Mn2+,Mg,Fe3+,Al)12Si12(O,OH)44, a new mineral from the Iwaizawa mine, Saitama Prefecture, Japan. Mineralogical Magazine, 44 (333). 51-53 doi:10.1180/minmag.1981.44.333.06 |
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| Plain Text | Matsubara, Satoshi (1981) Taneyamalite, (Na,Ca)(Mn2+,Mg,Fe3+,Al)12Si12(O,OH)44, a new mineral from the Iwaizawa mine, Saitama Prefecture, Japan. Mineralogical Magazine, 44 (333). 51-53 doi:10.1180/minmag.1981.44.333.06 |
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| In | (1981, March) Mineralogical Magazine Vol. 44 (333) Mineralogical Society |
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| Abstract/Notes | AbstractTaneyamalite, (Na,Ca)(Mn2+,Mg,Fe3+,Al)12 Si12(O,OH)44, is a Mn2+-dominant analogue of howieite, and has been found in the metamorphosed bedded manganese ore deposit of the lwaizawa mine, Saitama Prefecture, Japan. It is triclinic, P1 or P, a 10.198(1), b 9.820(1), c 9.485(1) Å, α 90° 30(1)′, β 70° 32(1)′, γ 108° 34(1)′, Z = 1. The strongest X-ray powder diffractions are: 9.29(80)010, 7.99(35)10, 4.62(50)020, 3.65(40)120, 3.273(100)30, 3.081(50)11, 2.790(35)31, 2.630(28)023, 2.216(35)014, 43. Taneyamalite occurs in association with minor bannisterite as small seams in a caryopilite mass or as a fissure mineral cutting a hematite-quartz mass. It is greenish grey-yellow, lustre vitreous. Streak light yellow. Cleavage {010}, perfect. H. (Mohs) about 5. Calculated sp. gr. 3.30 (on unit cell data and normalized empirical formula), 3.25 (after the Gladstone-Dale Law using the revised data of Mandarino, 1976). It is optically biaxial negative, 2Vα about 70°. The refractive indices: α = 1.646(2), β = 1.664(2), γ = 1.676(2). Extinction is nearly parallel, sign of elongation positive. Pleochroism distinct: α = β nearly colourless, γ pale yellow. Absorption: α ≈ β < γ. |
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