Presentation :
Shungite is a non-crystalline elemental carbon with a metastable structure incapable of graphitization. Contains traces of fullerenes (0.0001 <0.001%).
Names) :
...
Presentation :
Names) :
Hematite.
Etymology:
From the Greek haima=blood (Pliny) probably due to the red line color and/or the red color when observed in transmission.
Group...
Black Obsidian:
Presentation :
Names) :
Obsidian / Volcanic glass: Apache tear, Celestial Eye, Snowy Obsidian etc.
Etymology:
Obsidian: Named after the Roman Obsius sup...
Presentation :
Names) :
Pinas.
Etymology:
From the Greek “pyros” meaning “fire” and “boji” meaning “celestial”.
Group, Family:
Marcasite pyrite family .
...
Presentation :
Names) :
Kakortokite.
Etymology:
Takes its name from the town of Qaqortoq where it is extracted .
Group, Family:
Agpaïtic nepheline syenite.
...
