Mineralienatlas - Fossilienatlas
Informations
Inserted from |
Diether G., Bodensee-Nord |
Collectors Summary
Chemical Formula | SiO2 |
Color | violett |
Streak color | weiß |
Lustre | Glasglanz , Fettglanz |
Hardness (Mohs) | 7 |
Cleavages | fehlt |
Fracture | muschelig, spröde |
Crystal System | trigonal, P3121, P3221 |