| General Information |
|---|
| Chemical Formula | | Ca | | Al | | (SiO | | ) | | (OH) | | (x=0.2 to 1.5) |
Anthony et al, Handbook of mineralogy (2001) |
|---|
| Physical Properties of Hibschite |
|---|
| Mohs Hardness | 6Anthony et al, Handbook of mineralogy (2001) |
|---|
| Specific Gravity | 3.06 to 3.25Gemdat.org, Management Team (2012) More from other references |
|---|
| Tenacity | BrittleAnthony et al, Handbook of mineralogy (2001) |
|---|
| Cleavage Quality | NoneGemdat.org, Management Team (2012) |
|---|
| Fracture | Uneven,Irregular,Sub-ConchoidalGemdat.org, Management Team (2012) |
|---|
| Optical Properties of Hibschite |
|---|
| Optical Character | IsotropicAnthony et al, Handbook of mineralogy (2001) |
|---|
| Colour |
|---|
| Colour (General) | Usually colourless, pale yellow, may have tints of grey, green to bluish green, also may be smoky grey to blackGemdat.org, Management Team (2012) More from other references |
|---|
| Transparency | TranslucentAnthony et al, Handbook of mineralogy (2001) |
|---|
| Lustre | VitreousGemdat.org, Management Team (2012) |
|---|
| Crystallography of Hibschite |
|---|
| Crystal System | IsometricAnthony et al, Handbook of mineralogy (2001) |
|---|
| Habit | As shells (up to 60 mm thick) replacing andradite or other minerals.Anthony et al, Handbook of mineralogy (2001) |
|---|
| Geological Environment |
|---|
| Where found: | In a calcareous marl (Marianska Hora, Czech Republic); in zeolite-calcite rocks and low-grade metamorphosed marls (Hatrurim Formation, Israel).Anthony et al, Handbook of mineralogy (2001) |
|---|
| Further Information |
|---|
| Mineral information: | Hibschite information at mindat.org |
|---|
