TALC (Soap Stone) TDAP
Occurrence of Talc (Soap Stone) Talc is a common metamorphic mineral in metamorphic belts which contain Ultramafic Rocks (2) such as Soapstone (a hightalc rock), and within Whiteschist and Blueschist (3) Metamorphic Terranes. Prime examples of Whiteschists include the Franciscan Metamorphic Belt of the western United States.