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長野県金峯鉱山産 Ferrohastingsite


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Title: 長野県金峯鉱山産 Ferrohastingsite
Other Titles: Ferrohastingsite from the Kinbu Mine, Nagano Prefecture, Japan
Authors: 松本, 征夫
Authors (alternative): Matsumoto, Yukio
Issue Date: 29-Feb-1968
Citation: 長崎大学教養部紀要. 自然科学. 1968, 8, p.39-47
Abstract: A new occurence of ferrohastingsite has been recently recognized by author in the skarn zone of the Kinbu Mine, Nagano Prefecture. This ferrohastingsite occurs as fibrous aggregates, having a dark green colour, associated with hedenbergite and andradite. This ferrohastingsite has the following physical and optical poperties: H=5.5~6; sp. gr.=3.40±0.01; α=1.700, β=1.715, γ=1.718;-2V=34°~36°; Z∧c=10°~12°; X=greenish yellow, Y=brownish green, Z=bluish green. The chemical compositions of this ferrohastingsite are given in Table 2, viz. SiO2 41.36, TiO2 1.44, Al203 9.49, Fe2O3 5.23, FeO 25.48, MnO 0.57, MgO 2.14, CaO 10.24, Na2O 1.14, K2O 1.36, H2O(+) 2.09, H2O(-) 0.00, F 0.08, Cl 0.23, (less O for F and Cl 0.09), total 100.76%. The formula for this mineral is given as (Na0.34 K0.28)0.62 Ca1.73(Fe"3.35 Mg0.51 Mn0.08)3.94 (Fe"′0.02 Ti0.17Al0.27)1.06(Si6.51Al1.49)8.00(O21.70OH0.30)22.00(OH1.89F0.04C10.07)2.00 X-ray powder datas of ferrohastingsite from the Kinbu and Obira Mine are also given in table 4.
URI: http://hdl.handle.net/10069/16453
ISSN: 02871319
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:Volume 8

Citable URI : http://hdl.handle.net/10069/16453

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