Hardness: 6 - 6.5
Streak: Greenish/brownish black
Habit: Fine to medium-grained aggregate.
| ||Crystal System: Isometric|
Reaction with HCl: Unknown
Identification in hand sample:
Colour, hardness, streak and habit are best indicators. Gives off sparks when struck with a hard metal object.
Most common sulfide mineral, almost always present in hydrothermal deposits.
Industrial / ecomonic uses:
May be used as source of iron or sulfur, but not normally of economic value.