Augite
The SLNR matrix typically comprises cumulus orthopyroxene and plagioclase with interstitial augite, phlogopite, sulfide, and less common granophyric intergrowths of K-feldpsar and quartz.The orthopyroxene has a cumulus texture and comprises 30%–50% of the rock, and plagioclase laths comprise 30%–40% of the rock; these rocks range in composition from …