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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Chalcopyrite from
Ashio mine (Ashio copper mine), Ashio, Nikko City, Tochigi Prefecture, Japan


07487150017272723389881.jpg
Chalcopyrite, etc.

Ashio mine, Ashio, Nikko City, Tochigi Prefecture, Japan
04160880017605425067133.jpg
Chalcopyrite

Ashio mine, Ashio, Nikko City, Tochigi Prefecture, Japan
09768140017272024118428.jpg
Chalcopyrite, etc.

Ashio mine, Ashio, Nikko City, Tochigi Prefecture, Japan
07495840017368681038464.jpg
Chalcopyrite, etc.

Ashio mine, Ashio, Nikko City, Tochigi Prefecture, Japan
07487150017272723389881.jpg
Chalcopyrite, etc.

Ashio mine, Ashio, Nikko City, Tochigi Prefecture, Japan
04160880017605425067133.jpg
Chalcopyrite

Ashio mine, Ashio, Nikko City, Tochigi Prefecture, Japan
09768140017272024118428.jpg
Chalcopyrite, etc.

Ashio mine, Ashio, Nikko City, Tochigi Prefecture, Japan
07495840017368681038464.jpg
Chalcopyrite, etc.

Ashio mine, Ashio, Nikko City, Tochigi Prefecture, Japan
07487150017272723389881.jpg
Chalcopyrite, etc.

Ashio mine, Ashio, Nikko City, Tochigi Prefecture, Japan
00394890017605432002971.jpg
Chalcopyrite

Ashio mine, Ashio, Nikko City, Tochigi Prefecture, Japan
09768140017272024118428.jpg
Chalcopyrite, etc.

Ashio mine, Ashio, Nikko City, Tochigi Prefecture, Japan
03500670017368681043904.jpg
Chalcopyrite, etc.

Ashio mine, Ashio, Nikko City, Tochigi Prefecture, Japan
Locality type:Mine
Classification
Species:Chalcopyrite
Formula:CuFeS2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Fluorapatite13
Quartz9
Pyrite3
Stannoidite1
Calcite1
Data
Mineral Data:Click here to view Chalcopyrite data
Locality Data:Click here to view Ashio mine (Ashio copper mine), Ashio, Nikko City, Tochigi Prefecture, Japan
Photo GalleryView Gallery (3 photos)
Data Identifiers
Mindat Occurrence Record ID:37917
Long-form Identifier:1:3:37917:7
GUID (UUID V4):0
Nearest other occurrences of Chalcopyrite
11.0km (6.8 miles) ⓘHagidaira mine, Seta, Midori City, Gunma Prefecture, Japan
17.6km (10.9 miles) ⓘKaso Mine, Kanuma City, Tochigi Prefecture, Japan
28.4km (17.7 miles) ⓘNebazawa mine, Katashina, Tone District, Gunma Prefecture, Japan
29.5km (18.3 miles) ⓘKidogasawa Mine, Nikko City, Tochigi Prefecture, Japan
51.1km (31.8 miles) ⓘYaso Mine, Minamiaizu District, Fukushima Prefecture, Japan
62.3km (38.7 miles) ⓘNanetsu mine, Minamiuonuma City, Niigata Prefecture, Japan
77.8km (48.3 miles) ⓘTakatori mine, Shirosato-machi, Higashiibaraki District, Ibaraki Prefecture, Japan
79.4km (49.3 miles) ⓘKurosawa Mine, Minamiaizu District, Fukushima Prefecture, Japan
84.0km (52.2 miles) ⓘYokota Mine, Fukushima Prefecture, Japan
87.9km (54.6 miles) ⓘChichibu mining district, Nakatsugawa, Ohtaki-mura, Chichibu City, Saitama Prefecture, Japan
References
Stevens, H.J. (1911) A Manual of the Copper Industry of the World. The Copper Handbook Vol. 10
Sadanaga, Ryoichi, Bunno, Michiaki (1974) The Wakabayashi Mineral Collection. Bulletin 7. The University Museum, The University of Tokyo
Shimizu, M., Shikazono, N. (1987) Stannoidite-bearing tin ore; mineralogy, texture and physicochemical environment of formation. The Canadian Mineralogist: 25(2): 229-236.
Kamitani, M., Okumura, K., Teraoka, Y., Miyano, S., Watanabe, Y. (2007) Mineral Resources Map of East Asia, Geological Survey of Japan.
 
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