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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Mackinawite from
Akagane mine, Esashi ward, Oshu City, Iwate Prefecture, Japan


Locality type:Mine
Classification
Species:Mackinawite
Formula:FeS
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Mackinawite data
Locality Data:Click here to view Akagane mine, Esashi ward, Oshu City, Iwate Prefecture, Japan
Data Identifiers
Mindat Occurrence Record ID:494803
Long-form Identifier:1:3:494803:2
GUID (UUID V4):0
Nearest other occurrences of Mackinawite
35.3km (21.9 miles) ⓘArakawa ultramafics, Kamaishi City, Iwate Prefecture, Japan
References
Zohka, H. et al (1972) Compositional variations in natural mackinawites and the results of heating experiments. Journal of Science of the Hiroshima University, series C, Geology and Mineralogy, 7, #1, 37-53.
Muramatsu, Yôichi; Nambu, Matsuo; Takeuchi, Tsunehiko (1975) 岩手県赤金鉱山産バレリー鉱とマッキノー鉱について [Valleriite and mackinawite from Akagane mine, Iwate Prefecture, Japan]. The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists, 70 (7). p.236-244. doi:10.2465/ganko1941.70.236
 
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