| Reference Type | Journal (article/letter/editorial) |
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| Title | Kusachiite, CuBi2O4, a new mineral from Fuka, Okayama Prefecture, Japan |
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| Journal | Mineralogical Magazine | ISSN | 0026-461X |
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| Authors | Henmi, Chiyoko | Author |
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| Year | 1995 (September) | Volume | 59 |
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| Issue | 396 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_59/59-396-545.pdf+ |
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| DOI | doi:10.1180/minmag.1995.059.396.14Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 2672 | Long-form Identifier | mindat:1:5:2672:1 |
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| GUID | 0 |
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| Full Reference | Henmi, Chiyoko (1995) Kusachiite, CuBi2O4, a new mineral from Fuka, Okayama Prefecture, Japan. Mineralogical Magazine, 59 (396) 545-548 doi:10.1180/minmag.1995.059.396.14 |
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| Plain Text | Henmi, Chiyoko (1995) Kusachiite, CuBi2O4, a new mineral from Fuka, Okayama Prefecture, Japan. Mineralogical Magazine, 59 (396) 545-548 doi:10.1180/minmag.1995.059.396.14 |
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| In | (1995, September) Mineralogical Magazine Vol. 59 (396) Mineralogical Society |
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| Abstract/Notes | AbstractKusachiite, CuBi2O4, has been found in a calcite vein cutting gehlenite-spurrite skarns at Fuka, Okayama Prefecture. It is associated with calcite, henmilite, sillenite, bakerite, tenolite, bultfonteinite, apophyllite, cuspidine and thaumasite. Kusachiite occurs as prismatic crystals or globular aggregates of platy crystals. It is black, opaque with a metallic lustre. Kusachiite is tetragonal with space group P4/ncc, a = 8.511(2), c = 5.823(2) Å, Z = 4. The strongest lines in the X-ray powder pattern [d in Å (I)(hkl)] are 3.191 (100)(211), 2.695 (18)(310), 1.947 (18)(411), 4.26 (17)(200), 2.913 (16)(002), 2.404 (13)(202), 1.728 (12)(213), and 1.652 (9)(332). The Mohs hardness is 4.5, and the density is 8.5(3) g/cm3 (meas.) and 8.64 g/cm3 (calc.). Cleavage is perfect on {110}. Six electron probe analyses gave the following mean values CuO 13.91, Bi2O3 86.00 and total 99.91 in wt.%. The empirical formula calculated on the basis of O = 4 is Cu0.960Bi2.027O4 with the simplified formula CuBi2O4. |
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