Pyrite in Matrix
Iron Sulfide (FeS2)
mineral
Category
Metamorphic Or Sedimentary
Browse metamorphic or sedimentary specimens identified by the Rock Identifier community.
Learn about Metamorphic Or Sedimentary in the encyclopedia
View all →
Granite Gneiss
Gneiss (High-grade metamorphic rock formed from granitic precursor)
metamorphic
Garnet Schist
Garnetiferous Micaceous Schist
metamorphic
White Marble
Recrystallized Calcite Rock (CaCO3)
metamorphic
Marble
Recrystallized Calcite / Dolomite (CaCO3)
metamorphic
Gneiss (High-grade Metamorphic Rock)
Gneiss (Metamorphic silicate rock)
metamorphic
River Stone (Granitic Gneiss)
Foliated Granitic Gneiss
metamorphic
Greenschist / Migmatite
Regional Metamorphic Complex (Facies: Greenschist to Amphibolite)
metamorphic
Slate
Foliated Metamorphic Rock (composed primarily of Quartz, Muscovite, and Illite)
metamorphic
Amphibolite
Amphibolite
metamorphic
Gneiss Pebble
Gneiss (High-grade metamorphic rock)
metamorphic
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Gneis
Gneiss (High-grade metamorphic rock)
metamorphic
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Pink Granite Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Banded Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Blue Kyanite
Kyanite (Al2SiO5)
mineral
Schist
Mica Schist
metamorphic
Gneiss (Stream-worn Cobble)
Gneiss (Metamorphic rock composed primarily of Quartz, Feldspar, and Mica)
metamorphic
Fairy Stone (Staurolite Concretion)
Staurolite (Fe2+2Al9Si4O23(OH))
metamorphic
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Marble
Recrystallized Calcite (CaCO3)
metamorphic
Folded Schist / Gneiss (Metamorphic Rock)
Regional Metaphoric Folded Outcrop (predominantly Schist/Gneiss)
metamorphic
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Granitic Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
River Rock (likely Gneiss or Quartzite)
Metamorphic rock specimen (potentially Foliated Gneiss)
metamorphic
River Pebble (Gneiss or Granite)
Metamorphic Rock (likely Gneiss or Granitic composition)
metamorphic
Banded Agate
Agate (Silicon Dioxide, SiO2)
sedimentary
Dyed Agate
Silicon Dioxide with artificial pigment (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartzite Pebble
Quartzite (SiO2 based)
metamorphic
Yellow Quartzite (Onyx Pebble)
Silicon Dioxide (SiO2) - Quartzite
metamorphic
Quartzite Pebble (River Rock)
Metamorphic Quartzite (predominantly SiO2)
metamorphic
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Micaceous Schist
Mica Schist (primarily Muscovite or Biotite KAl2(AlSi3O10)(OH)2)
metamorphic
Anthracite Coal
Anthracite (Carbon Content: 86%-97%)
metamorphic
White Marble
Metamorphosed Limestone (principally CaCO3)
metamorphic
Epidote
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
mineral
Quartzite Geode or Crystalline Quartz Node
Silicon Dioxide (SiO2)
metamorphic
Marble
Metamorphosed Limestone (calcite formulation CaCO3)
metamorphic
Mica Schist
Mica Schist (Schistose metamorphic rock rich in Muscovite/Biotite)
metamorphic