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 :
Name :
Sodalite or Hackmanite.
Etymology :
Sodalite: According to chemical composition (Thomson, 1811).
Hackmanite: According to the Finnish geologist Victor Ha...
Presentation :
Names) :
Pyrite.
Etymology:
From the Greek pure=fire.
Group, Family:
Pyrite Group.
Color :
Brass yellow to metallic dark yellow "Grey-...
Snowflake obsidian:
Presentation :
Names) :
Obsidian / Volcanic Glass: Apache Tear, Celestial Eye, Snowy Obsidian etc.
Etymology:
Obsidian: Named after the Roman Obsius suppo...
