Garnet Mineral Group: SILICATES
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Garnet is a very heavy and hard
mineral.
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![]() Almandine Garnets in Mica Schist SPECIMEN LOCATION: Markstay, Ontario, CANADA |
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![]() Garnets with Kyanite SPECIMEN ORIGIN: North Bay, Ontario, CANADA |
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![]() ORIGIN: Markstay, Ontario |
This large, sandy, reddish-purple 12-sided garnet crystal weathered out of the mica schist it was in. The rain & the freeze/thaw cycle makes the schist break down because it is not hard. The garnet is very hard and so just rolls out of the schist into a pile of rock flakes & sand. The surface of the garnet gets dull because the water & chemicals of the sand corrodes its surface. This is called weathering. The crystal looks like a 12-sided die. |
![]() ORIGIN: Markstay, Ontario |
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COGWHEEL GARNETS are 2 garnets that have grown into each other. The faces that touch have angular "cogwheels". |
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