What is obsidian?

  • (noun): Acid or granitic glass; usually dark, but transparent in thin pieces.

Obsidian

Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock.

Read more about Obsidian.

Some articles on obsidian:

Anahim Peak - Area and History
... Anahim Peak was a significant source of obsidian for the Nuxalk, Tsilhqot'in, and Dakelh peoples ... Obsidian was seriously needed, because extremely sharp arrowheads and cutting knives could be made from it ... Anahim obsidian was traded widely all over the BC Interior and up and down the Coast from Bella Coola ...
Aguateca - Material Culture - Obsidian
... Obsidian was a highly valued material in Classic Maya society, and possession of it was indicative of high status ... The rulers of Aguateca controlled the main access to obsidian in the city while the procurement and distribution of obsidian may have been administered by the royal court of the Aguateca dynasty ... number of stronger and more substantial obsidian crafted blades than those who lived in smaller residences ...
Obsidian - Current Use
... by the US Food and Drug Administration (FDA) for use on humans, obsidian is used by some surgeons for scalpel blades, as well-crafted obsidian blades have a cutting ... strong enough microscope when examined even under an electron microscope an obsidian blade is still smooth and even ... One study found that obsidian incisions produced narrower scars, fewer inflammatory cells, and less granulation tissue in a group of rats ...
Speech Sounds - Plot Summary
... It is then she meets Obsidian, a man in a police uniform who stops to restore order and then offers her a ride in his car ... Before long, Rye learns that Obsidian can still read a map, and she struggles with an intense feeling of jealousy and an urge to kill him ... Rye asks Obsidian to return home with her, and he reluctantly agrees ...
Chivay Obsidian Source
... The Chivay obsidian source (71.5355° S, 15.6423° W, 4972 masl) is the geological origin of a chemical group of obsidian that is found throughout the south-central Andean highlands including southern Peru and ... NAA) have shown that the Chivay obsidian source, also known as the Cotallalli type or the Titicaca Basin type, makes up over 90% of the obsidian artifacts ... Obsidian from the Chivay source is found in large and homogeneous nodules in a high altitude volcanic depression approximately ten km to the east of the town of Chivay in the Colca Valley (Caylloma, Arequipa, Peru) ...