Mineral in metamorphic rocks (and rare Source of picture K. Wiese
Rock type: Mineral found in metamorphic rock Formation Environment: Burial and metamorphism of organic material – part of hydrocarbon/petroleum formation. Description: Metallic luster. Dark grey. H=1. Greasy. Dark grey streak. Name: Graphite Source of picture K. Wiese Rock type: Mineral in metamorphic rocks Formation Environment: