Mindatorg is the world's leading website about minerals and where they come from Snowflake Obsidian Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock It is produced when felsic lava extruded from a volcano cools rapidly with minimum crystal growth Obsidian is commonly found within the margins of rhyolitic lava flows known as obsidian flows, where the chemical composition (high silica Formation Obsidian forms when lava cools quickly When lava cools more slowly, crystals begin to form, giving the rock a more textured appearance Snowflake obsidian can form underground, in cracks that the magma seeps into, or above ground in
Tumbled Gray Snowflake Obsidian Gemstone On White Stock Photo Download Image Now Istock
