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Muscovite from
Komaki mine, Komaki, Okuizumo, Nita District, Shimane Prefecture, Japan


Locality type:Mine
Classification
Species:Muscovite
Formula:KAl2(AlSi3O10)(OH)2
Age information
Maximum recorded age:64.2 ± 2.6 Ma
Minimum recorded age:61.8 ± 2.5 Ma
Sample ages:
Recorded ageGeologic TimeSampleDating method
161.8 ± 2.5 MaPaleocene - K-Ar
261.8 ± 2.5 MaPaleocene - K-Ar
364.2 ± 2.6 MaPaleocene - K-Ar
Sample references:
1 -
Shibata K, Ishihara S (1974): K-Ar ages of the major tungsten and molybdenum deposits in Japan. Economic Geology 69(8) 1207-1214.
2 -
Shibata K, Ishihara S (1974): K-Ar ages of the major tungsten and molybdenum deposits in Japan. Economic Geology 69(8) 1207-1214.
3 -
Shibata K, Ishihara S (1974): K-Ar ages of the major tungsten and molybdenum deposits in Japan. Economic Geology 69(8) 1207-1214.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Muscovite data
Locality Data:Click here to view Komaki mine, Komaki, Okuizumo, Nita District, Shimane Prefecture, Japan
Data Identifiers
Mindat Occurrence Record ID:951125
Long-form Identifier:1:3:951125:5
GUID (UUID V4):0
Nearest other occurrences of Muscovite
5.4km (3.3 miles) ⓘFukasawa mine (Fukazawa mine), Odate, Akita Prefecture, Japan
7.9km (4.9 miles) ⓘOsarizawa Mine, Kazuno City, Akita Prefecture, Japan
8.9km (5.5 miles) ⓘUchinotai deposit, Kosaka mine, Kosaka, Akita Prefecture, Japan
14.2km (8.8 miles) ⓘShakanai Mine, Odate, Akita Prefecture, Japan
16.9km (10.5 miles) ⓘFurutobe mine (Furutohbe mine), Kosaka, Akita Prefecture, Japan
18.2km (11.3 miles) ⓘFurokura mine, Kazuno City, Akita Prefecture, Japan
18.6km (11.6 miles) ⓘTatemata mine, Hinai, Odate, Akita Prefecture, Japan
40.1km (24.9 miles) ⓘAni Mine, Ani-machi, Kitaakita City, Akita Prefecture, Japan
56.5km (35.1 miles) ⓘKamikita mine, Kamikita District, Aomori Prefecture, Japan
68.4km (42.5 miles) ⓘUshizawamata prospect, Daisen City, Akita Prefecture, Japan
References
Soeda, A., Takeno, S., & Watanabe, M. (1979). Mineralogical study on the wolframite series from the Chugoku district, Southwest Japan (I) Relationships between lattice parameters and chemical compositions. The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists, 74(10), 357-375.
Takagi, T., Naito, K., Collins, L. G., & Iizumi, S. (2007). Plagioclase–quartz Rocks of Metasomatic Origin at the Expense of Granitic Rocks of the Komaki District, Southwestern Japan. The Canadian Mineralogist, 45(3), 559-580.
 
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