Anorthosite

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東京リベンジャーズdandkabdlgustav oppeldoom generationsketch daily

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This rock is predominantly composed of quartz, alkali feldspar, and plagioclase. The alkali feldspar

Labradorite

optical-mineralogy:AnorthositePlagioclase Feldspar (polysynthetic twinning)Clinopyroxene

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