Formula: (Mn,Fe)(V,Cr)2O4
Origin of name: for Yrjö Vuorelainen (1922-), Finnish exploration geologist
Crystal system: Cubic/Isometric
Crystal class: 4/m 3 2/m
Twinning:
Unit cell: a = 8.48
Colour: Brownish gray, grayish black
Diaphaneity: Opaque
Luster: Metallic
Habit: grains 5 to 80 micron, massive, along grain boundaries of other minerals
Hardness: 6.5
Specific gravity: 4.64
Cleavage: none
Tenacity:
Streak:
Synonyms/varieties:
Comments: series with manganochromite
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