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


Locality type:Mine
Classification
Species:Calcite
Formula:CaCO3
Comments:White veinlets; red fluorescence.
Luminescent properties:red
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Calcite data
Locality Data:Click here to view Shiromaru mine (Hakumaru mine), Okutama-cho, Nishitama district, Tokyo Metropolis, Japan
Data Identifiers
Mindat Occurrence Record ID:428268
Long-form Identifier:1:3:428268:6
GUID (UUID V4):0
Nearest other occurrences of Calcite
25.7km (16.0 miles) ⓘSayama meteorite, Sayama City, Saitama Prefecture, Japan
36.3km (22.6 miles) ⓘChichibu mining district, Nakatsugawa, Ohtaki-mura, Chichibu City, Saitama Prefecture, Japan
73.2km (45.5 miles) ⓘYugawara Hot Spring, Yugawara, Ashigarashimo District, Kanagawa Prefecture, Japan
73.8km (45.8 miles) ⓘMogurazawa mine, Kiryu City, Gunma Prefecture, Japan
95.8km (59.5 miles) ⓘAshio mine (Ashio copper mine), Ashio, Nikko City, Tochigi Prefecture, Japan
99.4km (61.8 miles) ⓘKaso Mine, Kanuma City, Tochigi Prefecture, Japan
References
Matsubara, Satoshi, Miyawaki, Ritsuro, Yokoyama, Kazumi, Shimizu, Masaaki, Imai, Hiroyuki (2004) Tokyoite, Ba2Mn3+(VO4)2(OH), a new mineral from the Shiromaru mine, Okutama, Tokyo, Japan. Journal of Mineralogical and Petrological Sciences, 99 (6) 363-367 doi:10.2465/jmps.99.363
Tanaka, T. & Hamane, D. (2016) Epidote-(Sr) from Shiromaru mine, Tokyo prefecture, Japan. (conference presentation R1-P14)
 
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