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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Molybdenite from
Komaki mine, Komaki, Okuizumo, Nita District, Shimane Prefecture, Japan


Locality type:Mine
Classification
Species:Molybdenite
Formula:MoS2
Age information
Maximum recorded age:77.6 Ma
Minimum recorded age:70.2 Ma
Sample ages:
Recorded ageGeologic TimeSampleDating method
177.4 to 72 MaLate/Upper Cretaceous - Re-Os
277.6 to 70.2 MaLate/Upper Cretaceous - Re-Os
Sample references:
1 -
Suzuki, Katsuhiko, Shimizu, Hiroshi, Masuda, Akimasa (1996) Re-Os dating of molybdenites from ore deposits in Japan: Implication for the closure temperature of the ReOs system for molybdenite and the cooling history of molybdenum ore deposits. Geochimica et Cosmochimica Acta, 60 (16). 3151-3159 doi:10.1016/0016-7037(96)00164-0
2 -
Suzuki, Katsuhiko, Shimizu, Hiroshi, Masuda, Akimasa (1996) Re-Os dating of molybdenites from ore deposits in Japan: Implication for the closure temperature of the ReOs system for molybdenite and the cooling history of molybdenum ore deposits. Geochimica et Cosmochimica Acta, 60 (16). 3151-3159 doi:10.1016/0016-7037(96)00164-0
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Molybdenite data
Locality Data:Click here to view Komaki mine, Komaki, Okuizumo, Nita District, Shimane Prefecture, Japan
Data Identifiers
Mindat Occurrence Record ID:521288
Long-form Identifier:1:3:521288:0
GUID (UUID V4):0
Nearest other occurrences of Molybdenite
18.6km (11.6 miles) ⓘTatemata mine, Hinai, Odate, Akita Prefecture, Japan
93.9km (58.4 miles) ⓘNoda-Tamagawa mine, Noda, Kunohe-gun, Iwate Prefecture, Japan
References
(n.d.) Dr. Kameki Kinoshita collection, Geological Survey of Japan.
Soeda, A., Takeno, S., & Watanabe, M. (1979). Mineralogical study on the wolframite series from the Chugoku district, Southwest Japan (I) Relationships between lattice parameters and chemical compositions. The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists, 74(10), 357-375.
Takagi, T., Naito, K., Collins, L. G., & Iizumi, S. (2007). Plagioclase–quartz Rocks of Metasomatic Origin at the Expense of Granitic Rocks of the Komaki District, Southwestern Japan. The Canadian Mineralogist, 45(3), 559-580.
 
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