Mineral description : Fuchsite

Fuchsite from Horsmanaho, Finland. With quartz and some sulphide.

Fuchsite from Åsengruvan.

Fuchsite from Altemark, Norway. In calcite.

Mineral class	Silicates : Phyllosilicates : Mica group.
Chemical formula	K(Al,Cr)2(AlSi3O10)(OH)2
Crystal system	Monoclinic
Habitus	Flakes and laminar aggregates.
Cleavage	Perfect.
Hardness	2-2.5
Density	2.77-2.88
Color	Emerald green.
Streak
Luster	Vitreous (glassy).
Description
Occurance	In schist, dolomites and basical rocks, as peridotites and serpentinites.
Associates
Notes	Fuchsite is not considered as an unique mineral. It is only a chromium rich variety of muscovite.
Locations	A rare mineral in Sweden, but a few localities exists. Pullerogruvan, Grängesberg. Boliden, Västerbotten. South of Pajala, Norrbotten. Ruotasåive, north-west Karesuando, Lappland. Handöl soapstone quarry, Jämtland. Altemark, Mo i Rana, Norway. As thin layers in calcite. Fauske, Norway. As green layers in marble. Horsmanaho, Finland. Common as a green schist with quartz and sulphide.

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