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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Rhodochrosite from
Shiromaru mine (Hakumaru mine), Okutama-cho, Nishitama district, Tokyo Metropolis, Japan


Locality type:Mine
Classification
Species:Rhodochrosite
Formula:MnCO3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Rhodochrosite data
Locality Data:Click here to view Shiromaru mine (Hakumaru mine), Okutama-cho, Nishitama district, Tokyo Metropolis, Japan
Data Identifiers
Mindat Occurrence Record ID:525167
Long-form Identifier:1:3:525167:4
GUID (UUID V4):0
Nearest other occurrences of Rhodochrosite
1.8km (1.1 miles) ⓘOkutama mine, Okutama-cho, Nishitama district, Tokyo Metropolis, Japan
73.8km (45.8 miles) ⓘMogurazawa mine, Kiryu City, Gunma Prefecture, Japan
82.8km (51.4 miles) ⓘNakanoyama mine, Gunma Prefecture, Japan
83.3km (51.8 miles) ⓘHanawa mine, Seta, Midori City, Gunma Prefecture, Japan
84.1km (52.3 miles) ⓘRito mine (Ritoh mine), Seta, Midori City, Gunma Prefecture, Japan
84.2km (52.3 miles) ⓘShohwa mine (Showa mine), Kiryu City, Gunma Prefecture, Japan
87.0km (54.1 miles) ⓘHagidaira mine, Seta, Midori City, Gunma Prefecture, Japan
99.4km (61.8 miles) ⓘKaso Mine, Kanuma City, Tochigi Prefecture, Japan
References
(n.d.) Dr. Kameki Kinoshita collection, Geological Survey of Japan.
 
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