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Mineral Reference Lookup for Jacobsite

This reference page contains mineralogic data for Jacobsite and folklore and metaphysical beliefs. If the mineral is an alternate naming of a more common name, the more common mineral's data is displayed below the list of synonyms.

Minerals matching Jacobsite in the database: Jacobsite  

Mineralogical Reference

Jacobsite
MineralJacobsite
Chemistry(MnFeMg) 2+ (FeMn) 3+ 2 O 4
Colorblack grey in reflected light
TransparencyIsometric
CrystalSystemIsometric
Hardness5½ - 6½
StreakReddish black
IMAStatusApproved
Discovered1869
CellParametersa = 8.49
OpticalTypeIsotropic
TypeLocalityJakobsberg mine Nordmark Filipstad Värmland Sweden
Strunz4/B.02-30 4 : Oxides & Hydroxides B : Oxides with metal : oxygen = 3:4 (spinel type M3O4 and related)Alumina-Spinels 02 : Spinel groupMagnesioferrite - Franklinite series
RQPLPT_039
AVSPH13_054
TETUM_180
JSPCBD_266
AGBTBD_054
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