Name:
Stibnite		 Origin of name:
from Greek stibi, a grey cosmetic used to darken the eyelids		 Chemical composition:
Sb2S3
Stibnite, a sulphide of antimony, typically occurs as narrow prismatic crystals with longitudinal striations; aggregates are usually rod- or needle-like, although they may be granular or compact.

Powdered stibnite was used, by the Greeks and the Romans, as a cosmetic to darken the eyelids .

Stibnite is the main ore of antimony, which is used by the metallurgical industry to produce very hard alloys.

 Crystal system:
orthorhombic
Class:
Sulphides
Hardness:
2
Cleavage:
perfect
Colour:
lead grey
Specific gravity:
4.63-4.66

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