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Large plagioclase feldspar crystals can be seen below the hornblende, all embedded in a matrix of volcanic glass and feldspar crystals. Credit: Erik Klemetti Suddenly, there is a lot more color and ...
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Examining Rocks Under the MicroscopeLarge plagioclase feldspar crystals can be seen below the hornblende, all embedded in a matrix of volcanic glass and feldspar crystals. Credit: Erik Klemetti Suddenly, there is a lot more color ...
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