The big crystal is 12 mm across.
|Mineral class||Oxides : Hematite - Ilmenite - Magnetite group.|
|Habitus||Crystals often as well developed octaedric or dodecaedric crystals. Also as grainy or compact masses.|
|Cleavage||None, fracture conchoidal to uneven. Sometimes with octaedric partening.|
|Color||Black. Often with bluish iriscense.|
|Luster||Metallic or dull.|
|Occurance||Magnetite forms in igneous rocks (Kiruna) through magmatic differention. Also occurs in metamorphic rocks, hydrothermal veins and pegmatites.|
|Locations|| A very common mineral, beeing the major
part of many Swedish iron mines. Often as massive ore, but crystal
localities exists also.|
| To oxides index.
|| Mineral group index.
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