Metamorphic stone Gneiss
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Metamorphic stone - Gneiss

Gneiss rocks are metamorphic. These rocks may have been granite, which is an igneous rock, but heat and pressure changed it. You can see how the mineral grains in the rock were flattened through tremendous heat and pressure and are arranged in alternating patterns.
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Metamorphic stone Gneiss - by sandeep jain - 08-19-2014, 10:57 AM

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