Mineral description : Spessartine

Chemical formula : Mn₃Al₂[SiO₄]₃

Hardness : 6.5-7.5

Density : 4.18

Color : Dark red, orange-yellow or brown.

Crystal form : Cubic. Usually rombdodecaedric or ikosatetraedric crystals, also as massive aggregates.

Luster : glas.

Habitat : Typically in granites and pegmatites, more seldom in contact metamorphic silikate formations.

Associates : .

Notes : A less usual garnet in Sweden.

Locations :

Finnbo and Kårarvet pegmatite quarry, Falun.
V. silvbergs mine, Ludvika.
Kobergs mine, Persberg.
In the Värmländska mangan mines (Långban, Harstigen, Nordmark and Sjögruvan).
Porjusvare, Porjus.
Ultevis in Jokkmokk township.

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axelsson@acc.umu.se

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Last changed : 1998-03-07

Chemical formula :	Mn₃Al₂[SiO₄]₃
Hardness :	6.5-7.5
Density :	4.18
Color :	Dark red, orange-yellow or brown.
Crystal form :	Cubic. Usually rombdodecaedric or ikosatetraedric crystals, also as massive aggregates.
Luster :	glas.
Habitat :	Typically in granites and pegmatites, more seldom in contact metamorphic silikate formations.
Associates :	.
Notes :	A less usual garnet in Sweden.
Locations :	Finnbo and Kårarvet pegmatite quarry, Falun. V. silvbergs mine, Ludvika. Kobergs mine, Persberg. In the Värmländska mangan mines (Långban, Harstigen, Nordmark and Sjögruvan). Porjusvare, Porjus. Ultevis in Jokkmokk township.