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It's a showdown with rare earth elemental ore Monazite-(Ce) and index mineral Andalusite.
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Sericite from
Uchinotai deposit, Kosaka mine, Kosaka, Akita Prefecture, Japan


Locality type:Deposit
Classification
Species:Muscovite var: Sericite
Formula:KAl2(AlSi3O10)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Sericite data
Locality Data:Click here to view Uchinotai deposit, Kosaka mine, Kosaka, Akita Prefecture, Japan
Data Identifiers
Mindat Occurrence Record ID:1572325
Long-form Identifier:1:3:1572325:7
GUID (UUID V4):0
Nearest other occurrences of Sericite
8.5km (5.3 miles) ⓘFukasawa mine (Fukazawa mine), Odate, Akita Prefecture, Japan
9.2km (5.7 miles) ⓘFurutobe mine (Furutohbe mine), Kosaka, Akita Prefecture, Japan
14.8km (9.2 miles) ⓘShakanai Mine, Odate, Akita Prefecture, Japan
16.3km (10.1 miles) ⓘOsarizawa Mine, Kazuno City, Akita Prefecture, Japan
17.7km (11.0 miles) ⓘFurokura mine, Kazuno City, Akita Prefecture, Japan
26.2km (16.3 miles) ⓘTatemata mine, Hinai, Odate, Akita Prefecture, Japan
48.0km (29.8 miles) ⓘAni Mine, Ani-machi, Kitaakita City, Akita Prefecture, Japan
82.7km (51.4 miles) ⓘArakawa Mine, Kyohwa, Semboku District, Akita Prefecture, Japan
94.3km (58.6 miles) ⓘNoda-Tamagawa mine, Noda, Kunohe-gun, Iwate Prefecture, Japan
References
Sato, T. (1968). Ore Deposit and Mechanism of its Formation of Uchinotai Wwstern Ore Body, Kosaka Mine, Akita Prefecture, Japan. Mining Geology, 18(91), 241-256.
 
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