Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Category
Browse metamorphic or sedimentary specimens identified by the Rock Identifier community.
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Banded Gneiss
Gneiss (Metamorphic Rock)
Gneiss
Gneiss (High-grade metamorphic rock)
Biotite Schist
Biotite Schist
Dalmatian Stone
Dalmatian Jasper (a misnomer) / Perthitic Igneous Rock
Banded Gneiss
Gneiss (Metamorphic Rock)
Mica Schist (Garnetiferous)
Garnet-Mica Schist
Gneiss
Gneiss (High-grade metamorphic rock)
Gneiss
Gneiss (High-grade metamorphic rock)
Milky Quartz
Silicon Dioxide (SiO2)
Marble
Recrystallized Calcite (CaCO3)
Gneiss
Foliated Metamorphic Gneiss
Quartzite with Sandstone/Iron staining
Metamorphic Quartzite (SiO2)
Biotite Mica
Biotite (K(Mg,Fe)3AlSi3O10(F,OH)2)
Garnet in Quartz Matrix
Almandine Garnet (Fe3Al2(SiO4)3) in Quartz (SiO2)
Marble
Recrystallized Calcite (CaCO3)
Gneiss
Metamorphic rock of high-grade regional metamorphism
Green Aventurine
Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Kyanite (in Schist Matrix)
Kyanite (Al2SiO5)
Gneiss
Gneiss
Gneiss (Metamorphic Rock)
Gneiss (high-grade regional metamorphic rock)
Gneiss (Metamorphic Cobble)
Gneiss (High-grade Regional Metamorphic Rock)
Almandine Garnet in Schist
Almandine, Fe3Al2(SiO4)3
Epidote
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
Gneiss
High-grade regional metamorphic rock (Foliated)
Gneiss (Metamorphic Rock)
Gneiss
Garnet Schist
Garnet-bearing Mica Schist (variety of compositions, often Al2SiO5 with X3Y2(SiO4)3)
Biotite Mica
K(Mg, Fe)3AlSi3O10(F, OH)2
Schist
Mica Schist
Quartzite (Meta-sedimentary)
Quartzite (SiO2)
Gneiss
Gneiss (High-grade metamorphic rock)
Shale
Shale (comprised mostly of clay minerals and quartz)
Soapstone (Steatite)
Steatite (Hydrous magnesium silicate)
Blue Kyanite
Kyanite (Al2SiO5)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Anthracite Coal
Anthracite (Carbon-rich Sedimentary-to-Metamorphic Rock)
Pyritic Gneiss
Metamorphic Gneiss with Pyrite inclusions
Granitoid Gneiss with Feldspar Vein
Gneiss (High-grade Metamorphic Rock) with Potassium Feldspar (KAlSi3O8)
Gneiss
Gneiss (High-grade Metamorphic Rock)
Muscovite Mica (with Schist)
Muscovite - KAl2(AlSi3O10)(OH)2
Garnet in Host Rock
Garnet Group (A3B2(SiO4)3)
Mica Schist
Mica Schist (Composition: Muscovite, Biotite, Quartz, Feldspar)