Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Bornite from
Kotsu mine (Takakoshi mine; Kotu mine), Miyama-mura, Yamakawa-cho, Yoshinogawa City, Tokushima Prefecture, Japan


04388220017364083169347.jpg
Bornite

Kotsu mine, Miyama-mura, Yamakawa-cho, Yoshinogawa City, Tokushima Prefecture, Japan
04388220017364083169347.jpg
Bornite

Kotsu mine, Miyama-mura, Yamakawa-cho, Yoshinogawa City, Tokushima Prefecture, Japan
00632380017272058871891.jpg
Bornite

Kotsu mine, Miyama-mura, Yamakawa-cho, Yoshinogawa City, Tokushima Prefecture, Japan
Locality type:Mine
Classification
Species:Bornite
Formula:Cu5FeS4
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Bornite data
Locality Data:Click here to view Kotsu mine (Takakoshi mine; Kotu mine), Miyama-mura, Yamakawa-cho, Yoshinogawa City, Tokushima Prefecture, Japan
Data Identifiers
Mindat Occurrence Record ID:346273
Long-form Identifier:1:3:346273:7
GUID (UUID V4):0
Nearest other occurrences of Bornite
40.6km (25.2 miles) ⓘMinawa mine, Miyoshi City, Tokushima Prefecture, Japan
64.4km (40.0 miles) ⓘSazare mine, Shikokuchuo City, Ehime Prefecture, Japan
72.7km (45.2 miles) ⓘShirataki Mine, Okawa-mura, Tosa District, Kochi Prefecture, Japan
73.8km (45.8 miles) ⓘAbandoned unnamed mine, Okayama Prefecture, Japan
80.5km (50.0 miles) ⓘIkadazu mine (Ikadatsu mine), Ikadazu, Niihama City, Ehime Prefecture, Japan
83.8km (52.1 miles) ⓘIkadazu deposit, Tosa District, Kochi Prefecture, Japan
86.1km (53.5 miles) ⓘBesshi mine (Bessi mine), Besshi, Niihama City, Ehime Prefecture, Japan
References
(well-crystallized
Hisami MacNeill collection)
Harada, Zyunpéi (1954) Chemical Analyses of Japanese Minerals (III). Journal of the Faculty of Science, Hokkaido University, Series 4, Geology and mineralogy = 北海道大學理學部紀要, 8(4): 289-348.
Watanabe, M., Hoshino, K., Kagami, H., Nishido, H., Sugiyama, M. (1998) Rb-Sr, Sm-Nd and K-Ar systematics of metamorphosed pillowed basalts and associated Besshi-type deposits in the Sanbagawa Belt, Japan. Mineralium Deposita, 34 (1) 113-120 doi:10.1007/s001260050189
 
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