Mineral description : Antimonite

Antimonite from Austria.

Mineral class Sulphides : Antimonite bismuthinite orpiment group.

Chemical formula Sb₂S₃

Crystal system Orthorombic

Habitus Prismatic to needle like crystals common. Also as massive aggregates.

Cleavage Perfect along the crystal, uneven to subconchoidal fracture.

Hardness 2

Density 4.63-4.66

Color Steel gray, sometimes with iridescence.

Streak Led gray.

Luster Metallic.

Description

Occurance In low temperature hydrothermal veins.

Associates Often with red kermesite or yellow antimony ockra as surface alterations.

Notes Fuses in a match flame.
Soluble in hydrocloric acid.
Also called stibnite.

Locations A rare mineral in Sweden.

Långban, Värmland. As radiating small crystals in cracks in hematite.
Västerby feldspar quarry. As a rarity.
Nasafjäll silver mine, Lappland. In holes with other sulphides in quartz.
Fröå mine, Jämtland. As a rarity.

To sulphide index.
Mineral group index.
Main index.

If you have some questions, suggestions or comments you are welcome to write me a line or two.

axelsson@acc.umu.se

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Last changed : 1998-03-07

Mineral class	Sulphides : Antimonite bismuthinite orpiment group.
Chemical formula	Sb₂S₃
Crystal system	Orthorombic
Habitus	Prismatic to needle like crystals common. Also as massive aggregates.
Cleavage	Perfect along the crystal, uneven to subconchoidal fracture.
Hardness	2
Density	4.63-4.66
Color	Steel gray, sometimes with iridescence.
Streak	Led gray.
Luster	Metallic.
Description
Occurance	In low temperature hydrothermal veins.
Associates	Often with red kermesite or yellow antimony ockra as surface alterations.
Notes	Fuses in a match flame. Soluble in hydrocloric acid. Also called stibnite.
Locations	A rare mineral in Sweden. Långban, Värmland. As radiating small crystals in cracks in hematite. Västerby feldspar quarry. As a rarity. Nasafjäll silver mine, Lappland. In holes with other sulphides in quartz. Fröå mine, Jämtland. As a rarity.