metamorphic
Shungite
Non-crystalline carbon (similar to anthracite coal or meta-anthracite)
Hardness: 3.5-4 (Mohs); Color: Black or deep charcoal; Luster: Sub-metallic to vitreous; Crystal structure: Amorphous; Cleavage: None (conchoidal fracture); Specific gravity: 1.8-2.0
- Hardness
- 3
- Color
- Black or deep charcoal
- Luster
- Sub-metallic to vitreous
Identified More metamorphic →
Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 3.5-4 (Mohs); Color: Black or deep charcoal; Luster: Sub-metallic to vitreous; Crystal structure: Amorphous; Cleavage: None (conchoidal fracture); Specific gravity: 1.8-2.0
Formation & geological history
Formed through the metamorphism of ancient Precambrian organic deposits, likely cyanobacteria or algae, approximately 2 billion years ago. Primary deposits are found in the Karelia region of Russia.
Uses & applications
Used in water filtration, metallurgical processes as a source of carbon, pigment production, and widely in the jewelry and metaphysical collector markets.
Geological facts
Shungite is unique because it contains fullerenes, which are hollow spherical carbon molecules. It is one of the oldest carbon-bearing rock types on Earth.
Field identification & locations
Identify in the field by its intense black color, lightweight feel compared to most rocks, and its ability to conduct electricity (can be tested with a multimeter). Commonly found in the Lake Onega area of Russia.
More like this
