Diabase Hardness

Diabase is composed of plagioclase feldspar mostly labradorite and pyroxene e crystals that make up dolerite are usually visible to the naked eye, but sometimes porphyritic rocks of basaltic composition with pyroxene and especially plagioclase phenocrysts are also named that wayphitic texture randomly oriented plagioclase laths enclosed by pyroxene grains is a characteristic.

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