GeoJeopardy! Fridays #43

Time for GeoJeopardy! Fridays, because it's Earth Day!!

- Rocks & Minerals -

Green serpentine, seen here, is made into a gemstone that's a common substitute for this one
  

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Kernite, a major source of borax, is named for Kern County in this California desert where it is mined

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The chief ore of iron, this mineral, is named for the fact that its powder, or the streak that it leaves, is blood red

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Carrara, Italy is famous for its quarries of this rock

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Obsidian is described as having this type of luster, from the Latin for "glassy"

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All the answers as well as any other previous GeoJeopardy! questions can be found over at my website by clicking the link.  

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Questions, images, and videos courtesy of j-archive.com