Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Magnetite from
Shibukawa, Shizuoka Prefecture, Japan


Locality type:Outcrop
Classification
Species:Magnetite
Formula:Fe2+Fe23+O4
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Magnetite data
Locality Data:Click here to view Shibukawa, Shizuoka Prefecture, Japan
Data Identifiers
Mindat Occurrence Record ID:1785332
Long-form Identifier:1:3:1785332:1
GUID (UUID V4):0
Nearest other occurrences of Magnetite
9.2km (5.7 miles) ⓘNakauri mine, Shinshiro city, Aichi Prefecture, Japan
10.8km (6.7 miles) ⓘShidara Volcanic field, Shinshiro city, Aichi Prefecture, Japan
22.9km (14.2 miles) ⓘMinenosawa adit, Kune mine, Sakuma-cho, Tenryuu-ku, Hamamatsu City, Shizuoka Prefecture, Japan
27.7km (17.2 miles) ⓘKune mine, Sakuma-cho, Tenryuu-ku, Hamamatsu City, Shizuoka Prefecture, Japan
34.6km (21.5 miles) ⓘTenryuu river alluvials (Tenryugawa), Hamamatsu City, Shizuoka Prefecture, Japan
51.4km (31.9 miles) ⓘOoi river alluvials (Ooikawa; Oikawa), Shimada City, Shizuoka Prefecture, Japan
64.0km (39.7 miles) ⓘTono mine (Tohno mine), Tsukiyoshi uranium ore deposits, Mizunami City, Gifu Prefecture, Japan
71.3km (44.3 miles) ⓘHirukawa, Nakatsugawa City, Gifu Prefecture, Japan
72.5km (45.0 miles) ⓘAbe river alluvials (Abekawa), Warabino, Aoi Ward, Shizuoka City, Shizuoka Prefecture, Japan
74.6km (46.4 miles) ⓘFukuoka, Nakatsugawa City, Gifu Prefecture, Japan
References
Tomioka, Yuki; Kouketsu, Yui; Michibayashi, Katsuyoshi (2025) The Peak Metamorphic P–T Conditions of the Sanbagawa Schists in the Shibukawa Area, Central Japan: Application of Raman Geothermobarometry. Minerals, 15 (7). p.724. doi:10.3390/min15070724
 
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