Why We love Garnet Schist

Garnet Schist is a beautiful gray, silvery or brown colored metamorphic rock which shiny mica Garnet Schistlayers and an abundance of well-formed garnet crystals.  Garnet schist is the same rock as a mica schist with the exception of the inclusion of the garnets (too cool!).  The original rock type is typically a clayey rock with some calcite content such as a siltstone or a mudstone.  The major minerals in a schist are quartz and mica.  During the compression of the rock (metamorphism) the mica grains, which are thin and flat, are squeezed into sheet-like layers and give a silky, shiny appearance to the rock.  The texture of a schist is usually fine-grained; however, in a garnet schist the garnet crystals are large enough to be seen by the naked eye and appear to be “floating” in the schist rock.  If schist rocks are broken, they will bread into wavy surfaces.  Get your sample of Garnet Schist today!

 

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One Response to “Why We love Garnet Schist”

  1. thanks, helped me to make assignment

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