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Molybdenite Pyrite and Quartz

#30659

Molybdenite Pyrite and Quartz

#30659
Availability
Sold
Size
9 x 5 x 2.5 cm - Sm Cabinet 
Formula
MoS2 (RRUFF)
Locality
Goat Creek, Sanders Co., Montana, United States

There are three core splits in this set. Each split represents a different interval of diamond drill hole #1: at 182 ft, 334 ft, and 418 ft. I believe these splits represent one of the ten holes drilled by Noranda in 1974 after discovery in 1967. Good geological work and surface sampling enabled the discovery of the deposit. Goat Creek is a large, deep low grade Molybdenum deposit with skarn mineralization, including tungsten. Mineralization was in the Belt strata of the Wallace Formation and within a highly differentiated, non-outcropping Tertiary pluton (J. E. Worthington of the Idaho Geological Survey). The core shows good mineralization of Molybdenite and Pyrite in Quartz veining.

Molybdenite

Formula
MoS2 
Crystal System
Hexagonal 
Crystal Habit
Foliated, Massive, Disseminated 
Cleavage
Perfect, None, None 
Luster
Metallic 
Color
black, lead gray, gray 
Streak
greenish gray 
Class
Hexagonal - Dihexagonal Dipyramidal 
Fracture
Sectile 
Hardness

Data courtesy of Webmineral.

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