Molybdenite

Formula	MoS2
Origin	Allies Mine, NSW (Australia)
Description	highly lustrous silver molybdenite on quartz
Classification (Lapis)	Sulfides
Crystal System	Hexagonal
Hardness	1,0 – 1,5
Colour	Lead-gray; very pale yellow to deep reddish brown in transmitted light
Streak	Bluish gray
Luminescence	none observed
Lustre	Metallic
Transparency (Opacity)	Opaque
Cleavage	Perfect
Fracture	flaky
Magnetism
Geological Setting	In high-temperature hydrothermal veins
Specific Gravity	4,99 g/cm3