Mica Schist
Mica Schist (primarily Muscovite or Biotite KAl2(AlSi3O10)(OH)2)
Category
Browse metamorphic rock (formed from a fibrous crocidolite asbestos) specimens identified by the Rock Identifier community.
Mica Schist
Mica Schist (primarily Muscovite or Biotite KAl2(AlSi3O10)(OH)2)
Gneiss
Metamorphic rock of high-grade regional metamorphism
Greenstone Celt (Polished Stone Axe)
Metamorphosed mafic rock (often Basalt or Diabase)
Quartzite (River Pebble)
Quartzite (composed primarily of Silica, SiO2)
Quartzite
Quartzite (SiO2)
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
Quartzite with Iron Hydroxide Staining
Quartzite (primarily SiO2) with Limonite/Goethite staining
Banded Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
Gneiss
Gneiss (High-grade Metamorphic Rock)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Banded Gneiss
Gneiss (Metamorphic high-grade rock)
Marble
Recrystallized Calcite Rock (CaCO3)
Epidotite (Unakite variety)
Epidotized Granite (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH))
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Quartzite with Quartz Vein
Metamorphosed sandstone (SiO2)
Ferruginous Quartzite (Red Sandstone/Quartzite)
Quartzite with Iron inclusions (SiO2 + Fe2O3)
Quartzite Pebble
Quartzite (primarily SiO2)
Inspirational River Stone (Quartzite)
Metamorphosed Quartz-rich Rock (Quartzite) with SiO2 composition
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Anthracite Coal
Anthracite (Carbon-rich metamorphic rock)
Quartzite River Rock
Quartzite (primarily SiO2)
White Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Quartzite
Quartzite (primarily Silicon Dioxide, SiO2)
Quartzite River Rock
Quartzite (primarily SiO2)
Milky Quartz (Common Quartz)
Quartz (Silicon Dioxide, SiO2)
Slate
Metamorphosed Shale (Fine-grained Foliated Metamorphic Rock)
Quartzite
Silicon Dioxide (SiO2)
Mica Schist
Muscovite/Biotite Schist
Smoky Quartz
Silicon Dioxide (SiO2)
Anthracite Coal
Anthracite (Carbon-rich metamorphic rock)
Gneiss (Granitic Gneiss)
Gneiss (from German Gneis, related to 'spark')
Mica Schist
Schist (Biotite/Muscovite rich)
Gneiss (likely)
Gneiss
Lapis Lazuli
Lazurite-dominant rock, (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2
Quartzite
Quartzite (primarily SiO2)
Yellow Quartzite (Beach Pebble)
Quartzite (primarily SiO2)
Schist
Mica Schist (formula variable based on mineral content, typically containing [K,Al,Fe,Mg,Si,O,H])
Pink Quartzite
Quartzite (primarily SiO2)
Quartzite
Quartzite (primarily SiO2)
Petrified Wood
Silicified Wood (SiO2)
Yellow Quartzite (Iron-stained)
Quartzite (primarily SiO2 with Fe2O3 staining)
Greenschist
Greenschist facies rock (containing chlorite, actinolite, albite, and epidote)