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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Garnet Group from
Chichibu mining district, Nakatsugawa, Ohtaki-mura, Chichibu City, Saitama Prefecture, Japan


03975960017365170641050.png
Demantoid

Chichibu mining district, Nakatsugawa, Ohtaki-mura, Chichibu City, Saitama Prefecture, Japan
00020310017365170655149.png
Demantoid

Chichibu mining district, Nakatsugawa, Ohtaki-mura, Chichibu City, Saitama Prefecture, Japan
03975960017365170641050.png
Demantoid

Chichibu mining district, Nakatsugawa, Ohtaki-mura, Chichibu City, Saitama Prefecture, Japan
03741550017272002069886.png
Demantoid

Chichibu mining district, Nakatsugawa, Ohtaki-mura, Chichibu City, Saitama Prefecture, Japan
03975960017365170641050.png
Demantoid

Chichibu mining district, Nakatsugawa, Ohtaki-mura, Chichibu City, Saitama Prefecture, Japan
03741550017272002069886.png
Demantoid

Chichibu mining district, Nakatsugawa, Ohtaki-mura, Chichibu City, Saitama Prefecture, Japan
Locality type:Mining District
Classification
Species:'Garnet Group' (not an IMA approved species)
Formula:X3Z2(SiO4)3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Garnet Group data
Locality Data:Click here to view Chichibu mining district, Nakatsugawa, Ohtaki-mura, Chichibu City, Saitama Prefecture, Japan
Data Identifiers
Mindat Occurrence Record ID:58239
Long-form Identifier:1:3:58239:1
GUID (UUID V4):0
References
Harada, K., Kodama, H., & Sudo, T. (1965). New mineralogical data for xanthophyllite from Japan. The Canadian Mineralogist, 8(2), 255-262.
Hirotomo, U. (1986). Chemical Composition of Magnetite from the Hydrothermal Alteration Zone of Quartz Diorite Bodies, Chichibu Mining Area, Japan. Rock Magnetism and Paleogeophysics, 13, 60.
 
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