Arseniopleite from the Gozaisho Mine, Fukushima Prefecture, Japan.
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Accession number;02A0325292
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| Title;Arseniopleite from the Gozaisho Mine, Fukushima Prefecture, Japan. |
| Author;
MATSUBARA S
(National Sci. Museum, Tokyo, Jpn)
MIYAWAKI R
(National Sci. Museum, Tokyo, Jpn)
KATO A
(National Sci. Museum, Tokyo, Jpn)
MATSUYAMA F
(Univ. Tokyo, Tokyo, Jpn)
MOURI T
(Kagawa Prefectural Inst. Public Health, Kagawa, Jpn)
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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.27;NO.3/4;PAGE.51-62(2001)
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| Figure&Table&Reference;FIG.5, TBL.6, REF.12 |
| Pub. Country;Japan |
| Language;English |
| Abstract;Arseniopleite is found in metamorphosed manganese ore from the Gozaisho mine, Fukushima Prefecture, Japan. It is reddish brown in color and forms aggregates composed of platy crystals in rhodonite-braunite ore in association with sarkinite, brandtite, Ce-bearing romeite, quartz, barite, aegirine, K-feldspar, and albite. The representative chemical analysis by EDS indicates Na2O 6.39. CaO 5.45, PbO 0.87, MgO 2.84, MnO 25.61, Fe2O3 3.52, As2O5 55.22, total 99.90wt.%, and leads to the empirical formula, (Na0.91Pb0.03).SIGMA.0.94(Ca0.61Na0.39).SIGMA.1.00Mn1.00(Mn1.28Mg0.44Fe0.28).SIGMA.2.00As3.03O12, on the basis of O=12. The strongest lines in the X-ray powder diffraction pattern are 6.54 (19) (020), 3.28 (22) (040), 3.00 (21) (311), 2.83 (100) (330), 2.80 (30) (400), 2.68 (26) (132), and 2.19 (17) (251). The calculated cell parameters from the X-ray powder diffraction data are: a=11.320 (7), b=13.118 (7), c=6.872 (6).ANGS., .BETA.=98.85 (5).DEG., V=1008 (1).ANGS.3 in a setting of the space group P21/c. (author abst.) |
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