Rock Identifier

Category

Sedimentary (Chemically Precipitated) Or Metamorphic

Browse sedimentary (chemically precipitated) or metamorphic specimens identified by the Rock Identifier community.

Learn about Sedimentary (Chemically Precipitated) Or Metamorphic in the encyclopedia

Conglomerate

Quartzite Sandstone

Quartzite Sandstone

Metabasalt

Eulysite

Breccia

Ironstone

Anthracite

Metaquartzite

Slate

Marble

Hornfels

Metarhyolite

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Quartz River Pebble with Algae (Silicon Dioxide (SiO2) with organic biofilm) — metamorphic or igneous

Quartz River Pebble with Algae

Silicon Dioxide (SiO2) with organic biofilm

metamorphic or igneous

Calcite (Optical Calcite / Iceland Spar) (Calcium Carbonate (CaCO3)) — mineral

Calcite (Optical Calcite / Iceland Spar)

Calcium Carbonate (CaCO3)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Weathered metamorphic rock, likely gneiss or schist (Indeterminate foliated silicate rock; commonly quartz–feldspar–mica assemblage) — metamorphic

Weathered metamorphic rock, likely gneiss or schist

Indeterminate foliated silicate rock; commonly quartz–feldspar–mica assemblage

Serpentine (Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)3(Si, Al, Fe)2O5(OH)4) — metamorphic

Serpentine

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)3(Si, Al, Fe)2O5(OH)4

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Quartz Pebble (with potential iron inclusions) (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble (with potential iron inclusions)

Silicon Dioxide (SiO2)

Quartzite (Quartzite (Primary mineral: SiO2)) — metamorphic

Quartzite

Quartzite (Primary mineral: SiO2)

Quartzite Pebble (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite Pebble

Metamorphic Quartzite (SiO2)

Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Blue Apatite (Apatite-(CaF), Ca5(PO4)3F) — mineral

Blue Apatite

Apatite-(CaF), Ca5(PO4)3F

Quartz Mineral (Silicon Dioxide (SiO2)) — mineral

Quartz Mineral

Silicon Dioxide (SiO2)

Aragonite (Aragonite (CaCO3)) — mineral

Aragonite

Aragonite (CaCO3)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Tumbled milky quartz (Quartz (SiO₂), likely massive milky quartz) — mineral

Tumbled milky quartz

Quartz (SiO₂), likely massive milky quartz

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Talc (Soapstone variety) (Talc (Hydrated magnesium silicate) - Mg3Si4O10(OH)2) — mineral

Talc (Soapstone variety)

Talc (Hydrated magnesium silicate) - Mg3Si4O10(OH)2

Psilomelane (Black Hematite/Manganese Ore) (Barium Manganese Oxide (Formula: BaMn9O18(OH)4)) — mineral

Psilomelane (Black Hematite/Manganese Ore)

Barium Manganese Oxide (Formula: BaMn9O18(OH)4)

Quartzite Pebble (Quartzite (SiO2)) — metamorphic

Quartzite Pebble

Quartzite (SiO2)

Quartzite pebble (Meta-quartzite (SiO2)) — metamorphic

Quartzite pebble

Meta-quartzite (SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Quartzite Pebble (Quartzite (SiO2)) — metamorphic

Quartzite Pebble

Quartzite (SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Quartzite with Schist Inclusions (Metamorphosed Quartzite (SiO2) with minor mica/chlorite schist) — metamorphic

Quartzite with Schist Inclusions

Metamorphosed Quartzite (SiO2) with minor mica/chlorite schist

Quartzite with Glauconitic or Iron staining (Quartzite (SiO2 with accessory minerals)) — metamorphic

Quartzite with Glauconitic or Iron staining

Quartzite (SiO2 with accessory minerals)

Blue Aventurine (Quartz (SiO2) with inclusions) — mineral

Blue Aventurine

Quartz (SiO2) with inclusions

Quartzite with Mica (Metamorphic Quartzite (SiO2 + Mica phyllosilicates)) — metamorphic

Quartzite with Mica

Metamorphic Quartzite (SiO2 + Mica phyllosilicates)

Calcite in Matrix (Calcium Carbonate (CaCO3)) — mineral

Calcite in Matrix

Calcium Carbonate (CaCO3)

Jasper with Quartz Veining (Silicon Dioxide (SiO2) - Opaque cryptocrystalline variety of Quartz) — sedimentary

Jasper with Quartz Veining

Silicon Dioxide (SiO2) - Opaque cryptocrystalline variety of Quartz

Quartz–mica metamorphic rock, likely schist (Quartz–muscovite/biotite schist; predominantly SiO₂ quartz with phyllosilicate micas) — metamorphic

Quartz–mica metamorphic rock, likely schist

Quartz–muscovite/biotite schist; predominantly SiO₂ quartz with phyllosilicate micas

Chert Pebble (Microcrystalline Quartz (SiO2)) — sedimentary

Chert Pebble

Microcrystalline Quartz (SiO2)

Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)) — metamorphic

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)

Quartzite (Quartzite (composed primarily of SiO2)) — metamorphic

Quartzite

Quartzite (composed primarily of SiO2)

Quartzite Cobble (Quartzite (SiO2)) — metamorphic

Quartzite Cobble

Quartzite (SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Quartzite (Quartzite (primarily Silicon Dioxide, SiO2)) — metamorphic

Quartzite

Quartzite (primarily Silicon Dioxide, SiO2)

Blue Quartzite (Blue Quartzite (Primary mineral: Quartz, SiO2 with magnesio-riebeckite or crocidolite inclusions)) — metamorphic

Blue Quartzite

Blue Quartzite (Primary mineral: Quartz, SiO2 with magnesio-riebeckite or crocidolite inclusions)

Red Quartzite (Quartzite (primarily SiO2)) — metamorphic

Red Quartzite

Quartzite (primarily SiO2)

Quartzite Cobble (Quartzite (SiO2)) — metamorphic

Quartzite Cobble

Quartzite (SiO2)

Septarian Nodule (Septarian Concretion (CaCO3 with Calcite/Aragonite and Clay/Mudstone)) — sedimentary

Septarian Nodule

Septarian Concretion (CaCO3 with Calcite/Aragonite and Clay/Mudstone)

Serpentine (Nephrite-like River Cobble) (Serpentinite (Hydrous Magnesium Iron Silicate)) — metamorphic

Serpentine (Nephrite-like River Cobble)

Serpentinite (Hydrous Magnesium Iron Silicate)