Breccia
Breccia
sedimentary
Category
Sedimentary Rock
Browse sedimentary rock specimens identified by the Rock Identifier community.
Learn about Sedimentary Rock in the encyclopedia
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Garnet Schist
Almandine Garnet in Mica Schist (Fe3Al2(SiO4)3)
metamorphic
Schist
Mica Schist (primarily Muscovite or Biotite sheet silicates)
metamorphic
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite (Fe2O3 staining)
sedimentary
Gneiss
Gneiss
metamorphic
Limestone
CaCO3 (principally composed of Calcite)
sedimentary
Mica Schist
Mica Schist (KAl2(AlSi3O10)(OH)2 - Muscovite component)
metamorphic
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Quartzite Cobble
Quartzite (composed primarily of SiO2)
metamorphic
Gneiss
Gneiss
metamorphic
Petoskey Stone
Hexagonaria percarinata (Fossilized Coral)
sedimentary
Quartz Geodes and Crystal Clusters
Silicon Dioxide (SiO2)
mineral
Oolitic Chert
Silicon Dioxide (SiO2) with Oolitic texture
sedimentary
River Stone (Quartzite/Siltstone mixture)
Silicon Dioxide (SiO2) based metamorphosed sandstone
metamorphic or sedimentary
Banded Agate (Orca Agate)
Silicon Dioxide (SiO2) - Chalcedony variety
mineral
Sandstone (with cross-bedding)
Arenite (composed primarily of Quartz: SiO2)
sedimentary
Quartz (on matrix)
Quartz (Silicon Dioxide, SiO₂)
Mineral
Quartz Vein with Host Rock (Greywacke/Siltstone)
Silicon Dioxide (SiO2) within Clastic Sedimentary/Metamorphic Matrix
metamorphic
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Fossilized Echinoid (Sea Urchin)
Echinoidea (Class), often found as calcitic fossils
sedimentary
Biotite Gneiss
Gneiss (complex mixture including Biotite K(Mg,Fe)3AlSi3O10(F,OH)2 and Quartz/Feldspar)
metamorphic
Coarse Sand Grain / Lithic Fragment
Clastic Sediment (Lithic fragment or Quartz/Feldspar grain)
sedimentary
Chalcedony in Host Rock
Silicon Dioxide (SiO2)
mineral
Magnetite Orthorthotropic Rock
Magnetite (Fe3O4)
mineral
Sandstone (with Liesegang rings or Oxidation)
Arenite (primarily Quartz SiO2 with Iron Oxide Fe2O3 staining)
sedimentary
Almandine Garnet in Schist
Almandine, Fe3Al2(SiO4)3
metamorphic
Gneiss
Gneiss
metamorphic
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Hematite/Limonite) inclusions
mineral
Banded Gneiss with Quartz Vein
Foliated Metamorphic Rock (Gneiss)
metamorphic
Turquoise
Hydrous phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Mica Schist
Mica Schist (Composition: Muscovite, Biotite, Quartz, Feldspar)
metamorphic
Chert (Jasper)
Silicon Dioxide (SiO2)
sedimentary
Gneiss with Quartz Veining
Gneiss (High-grade Metamorphic Rock)
metamorphic
Dalmatian Stone (Dalmation Jasper)
Aplite with Arfvedsonite inclusions
igneous
Agate
Chalcedony (cryptocrystalline variety of Quartz, SiO2)
mineral
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
mineral
Moss Agate
Silicon Dioxide (SiO2) with inclusions of Manganese or Iron oxides
mineral
Dendritic Agate
Dendritic Agate (Silicon Dioxide with Manganese or Iron Oxide inclusions, SiO2)
mineral
Clear Quartz Cluster
Quartz (Silicon Dioxide - SiO2)
mineral
Quartz Geode Segment
Crystalline Silicon Dioxide (SiO2)
mineral