Obsidian is a volcanic glass which forms when a high silica melt solidifies quickly after eruption. Organic and chemical are terms used to classify sedimentary rock. Obsidian is an igneous rock type.
Obsidian has a higher luster(shinier) than coal, coal is organic, and coal is sedimentary and obsidian is igneous
chemichal
Yes it is considered a natural gas since it is not mixed wth unauthorized chemicals, of the A899 chemichal law if any chemichal is mixed it would not be natural.
Its a Chemichal reaction..
Obsidian is a naturally occurring volcanic form of glass.
Obsidian
Mahogany Obsidian
No. Obsidian is brittle.
yes. the bigger the chemichal reaction
No. Obsidian is natural glass, mostly silica. Obsidian is of volcanic origin.
Obsidian is, itself, a mineral.