Molybdenite

Yokota, Oku-Izumo city, Nita county, Shimane pref., Japan

Field of view: 20 mm. Hexagonal tabular molybdenite. The hexagonal tabular silver crystal at the bottom of the specimen is molybdenite. The white host is gangue quartz, a vein in granite. The yellow part at the bottom of molybdenite is ferrimolybdite. The brown part is a limonite crust.

Recovered from a quartz vein in a pneumatolytic deposit in I-type (Magnetite-series) granite. Formed in the early Paleocene (65 Ma).

Molybdenite from this location was described in 1945.

Other localities

List of Japanese molybdenite localities

Hirase Mine (Hydrothermal)
Nakatatsu Mine (Hydrothermal)
Komaki Mine (Hydrothermal)
Otome Mine (Alpine Fissure)
Tsuruse (Pegmatite)
Taguchi Mine (Bedded Mn, AM facies)
Matsuzawa Mine (Bedded Mn, AE facies)