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ATHENA MINERALOGY |
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ATHENA MINERALOGY |
| Mineral: | TEGENGRENITE |
|---|---|
| Formula: | (Mg,Mn2+)2Sb5+0,5(Mn3+,Si,Ti)0,5O4 |
| Crystal System: | Rhombohedral (Trigonal) pseudo Cubic |
| Group: | Spinel supergroup. Oxyspinel group. Ulvöspinel subgroup |
| IMA Number: | 1999-002 |
| References: | AM 85 (2000), 1315; MR 32/5 (2001), 419 |
| Type Locality: | Jakobsberg, Filipstad, Värmland (Varmland, Wermland), Sweden |
| Tegengrenite The new mineral Tegengrenite (red) showing red internal reflections, with hausmannite Jakobsberg, Värmland, Sweden. Polished section x-nicols. Size 1.5 mm. Photo © Kjell Gatedal, School of Mines and Metallurgy, Filipstad, Sweden. See also: athena.unige.ch -> mineral pictures |
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