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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Quartz from
Ichiba River, Niihama City, Ehime Prefecture, Japan


Locality type:Outcrop
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Ichiba River, Niihama City, Ehime Prefecture, Japan
Data Identifiers
Mindat Occurrence Record ID:1978920
Long-form Identifier:1:3:1978920:6
GUID (UUID V4):0
Nearest other occurrences of Quartz
7.9km (4.9 miles) ⓘUrayama River, Shikokuchuo City, Ehime Prefecture, Japan
10.2km (6.3 miles) ⓘBesshi mine (Bessi mine), Besshi, Niihama City, Ehime Prefecture, Japan
12.6km (7.8 miles) ⓘIchinokawa Mine, Saijo City, Ehime Prefecture, Japan
12.8km (8.0 miles) ⓘIkadazu mine (Ikadatsu mine), Ikadazu, Niihama City, Ehime Prefecture, Japan
17.6km (11.0 miles) ⓘShirataki Mine, Okawa-mura, Tosa District, Kochi Prefecture, Japan
19.1km (11.9 miles) ⓘSazare mine, Shikokuchuo City, Ehime Prefecture, Japan
39.3km (24.4 miles) ⓘMount Kuresaka, Iwagi Island, Ochi District, Ehime Prefecture, Japan
39.8km (24.7 miles) ⓘAnanai mine, Nankoku city, Kochi Prefecture, Japan
43.6km (27.1 miles) ⓘKamoyama mine, Ino, Agawa District, Kochi Prefecture, Japan
43.7km (27.1 miles) ⓘMategata, Namikata-cho, Imabari City, Ehime Prefecture, Japan
References
SHIROSE, Yohei; TAKAGAKI, Hikaru (2026) Arsenotučekite from serpentinite and listvenite in the Median Tectonic Line shear zone, eastern Ehime Prefecture, Japan. Journal of Mineralogical and Petrological Sciences, 121 (1). p.n/a. doi:10.2465/jmps.251128al
 
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