Diadochite from the Hinomaru-Nako Mine, Yamaguchi Prefecture, Japan.
| Accession number;99A1015088 |
| Title;Diadochite from the Hinomaru-Nako Mine, Yamaguchi Prefecture, Japan. |
| Author;MATSUBARA S(National Sci. Museum, Tokyo, Jpn) MIYAKAWA R(National Sci. Museum, Tokyo, Jpn) IWANO S |
Journal Title;Bull Natl Sci Mus Ser C
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Journal Code:S0397B
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ISSN:0385-244X
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VOL.25;NO.1/2;PAGE.51-57(1999)
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| Figure&Table&Reference;FIG.2, TBL.2, REF.8 |
| Pub. Country;Japan |
| Language;English |
| Abstract;Diadochite from the Hinomaru-Nako mine occurs as an efflorescence on goethite-stained cracks of andalusite-pyrophyllite-quartz ore including pyrite augelite, trolleite, scorzalite and other aluminum phosphates. It is coloreless to pale beige in color with vitreous luster. The representative chemical analysis by EPMA gave Fe2O3 38.46, Al2O3 0.33, SO3 19.78, P2O5 17.06, Total 75.63 wt.%, yielding the empirical formula (Fe3+1.97Al0.03).SIGMA.2.00(PO4)0.99(SO4)1.01 on the basis of O=8.5 in anhydrous part. The X-ray powder diffraction pattern by a Gandolfi camera is indexed on triclinic cell with a=9.59(1), b=9.74(1), c=7.33(1).ANGS., .ALPHA.=98.7(1).DEG., .BETA.=107.9(1).DEG., .GAMMA.=63.9(1).DEG.. (author abst.) |
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