Sketchbook  Shanna Baldwin Moore, US

 

Haiga

 

 

Rocks containing Olivene are sometimes found in lava. This is thought to be pieces of the mantle of the earth, carried upwards by a volcano. Practically everything we can see of the earth, including nearly all the minerals, is just the crust of the earth, which is very thin, only 7-35 km (relatively thinner than the skin of an apple!). Underneath is the mantle, and a piece of Olivene is the closest we will get to see it. I find it very interesting that one of the basic rocks of the earth is green, since we tend to think of the earth as green (because of plants) although it looks blue from space. We call these little gems "Pele's Tears". shanna

 

 

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