Learning Objectives: • Students will be able to identify the most common silicate minerals that occur in metabasites • Students will be able to determine metamorphic facies from mineral assemblages present in metabasites New Minerals : Natrolite, Preh

Chad Keel from Learning Geology takes us an adventure to Wrightwood, California to explore minerals. Actinolite can be found easily in the Heath Creek wash above Wrightwood. This video gives us a brief intro into Actinolite, and how it is formed.

Actinolite sometimes occurs as thin, splintery inclusions inside Quartz crystals. If the inclusions are parallel and dense, it will cause chatoyancy in the Quartz. Actinolite and Tremolite share several recognized varieties. Mountain Leather, a thickly fi