Snowflake Obsidian
Black obsidian with white patches of cristobalite - Blue Chart Gem Identification, Herve Nicolas Lazzarelli, 2010, p 8
| General Information | |
|---|---|
| A variety or type of: | Obsidian, which is a variety of Glass |
| Physical Properties of Snowflake Obsidian | |
| Mohs Hardness | 5 to 5.5, Blue Chart Gem Identification (2010) |
| Specific Gravity | 2.33 to 2.50+, Blue Chart Gem Identification (2010) |
| Fracture | Conchoidal, Gemstones (2009) |
| Optical Properties of Snowflake Obsidian | |
| Refractive Index | 1.450 to 1.550, Blue Chart Gem Identification (2010) |
| Optical Character | Isotropic, Gemstones (2009) |
| Colour | |
| Colour (General) | Black with white patches., Management Team (2012) |
| Transparency | Transparent,Translucent,Opaque, Gemmological Tables (2004) |
| Lustre | Vitreous, Gemstones (2009) |
| Crystallography of Snowflake Obsidian | |
| Crystal System | Amorphous, Blue Chart Gem Identification (2010) |
| Habit | Massive, Gemstones (2009) |
| Further Information | |
| Mineral information: | Snowflake Obsidian information at mindat.org |