What's the difference between obsidian and pyroxenite?

Obsidian


Definition:

  • (n.) A kind of glass produced by volcanoes. It is usually of a black color, and opaque, except in thin splinters.

Example Sentences:

  • (1) ‘The job is fun, but should never be more than 40 hours per week’ Veteran game designer Chris Avellone, now co-owner of Obsidian Entertainment, focuses on downscaling.
  • (2) In Mesoamerica, the Aztec empire promoted a militaristic state ideology and developed extensive trade networks to secure valued materials, including obsidian and exotic and symbolically powerful materials such as the shimmering, iridescent feathers of the quetzal bird.
  • (3) The victims are splayed on a column at the top of a pyramid, and a priest cracks their ribcage open with an obsidian knife to pluck out their still-beating hearts.
  • (4) A method for analysis of Ni concentrations in tissues is described, which involves (a) tissue dissection with metal-free obsidian knives, (b) tissue homogenization in polyethylene bags by use of a "Stomacher" blender, (c) oxidative digestion with mixed nitric, sulfuric, and perchloric acids, and (d) quantitation of Ni by electrothermal atomic absorption spectrophotometry with Zeeman background correction.
  • (5) It will come in three colours: black, grey and obsidian and goes on sale in 2018.
  • (6) It’s a fun job, but it shouldn’t be an exploitative one Chris Avellone, Obsidian Entertainment The need to appease both parties can lead to blow-outs.

Pyroxenite


Definition:

  • (n.) A rock consisting essentially of pyroxene.

Example Sentences:

Words possibly related to "obsidian"

Words possibly related to "pyroxenite"