Mineralienatlas - Fossilienatlas
4 Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate) |
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4.D Metall: Sauerstoff = 1:2 und vergleichbare |
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4.DA Mit kleinen [Kationen]: [Kieselsäure]-Familie |
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4.DA.05 Quarz-Gruppe |
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Quarz | SiO2 | trigonal | P3121, P3221 | 32 |
Hemleyit | FeSiO3 | trigonal | R3 | 3 |
4.DA.10 Tridymit-Gruppe |
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Opal | SiO2·nH2O | |||
Tridymit | SiO2 | orthorhombisch | C2221 | 222 |
4.DA.15 Stishovit-Gruppe |
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Cristobalit | SiO2 | tetragonal | P41212, P43212 | 422 |
Stishovit | SiO2 | tetragonal | P42/mnm | 4/mmm |
Keatit | SiO2 | 96 | ||
4.DA.20 Moganit-Gruppe |
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Mogánit | SiO2 | monoklin | I2/a | 2/m |
4.DA.25 Melanophlogit-Gruppe |
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Melanophlogit | 46SiO2 ·6(N2,CO2) ·2(CH4, N2) | tetragonal | P42/nbc | 4/mmm |
Chibait | SiO2·n(CH4,C2H6,C3H8,C4H10) {n=0.18 (max)} | kubisch | Fd3 | m3 |
Bosoit | SiO2·nCxH2x+2 | hexagonal | P6/mmm | 6/mmm |
4.DA.30 Lechatelierit-Gruppe |
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Lechatelierit | SiO2 | amorph | ||
4.DA.35 Coesit-Gruppe |
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Coesit | SiO2 | monoklin | C2/c | 2/m |
4.DA.50 |
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Seifertit | SiO2 | orthorhombisch | ||
Riesit | TiO2 | monoklin | P2/c | 2/m |