Rock Identifier

Category

Sedimentary Or Metamorphic (Base Substrate)

Browse sedimentary or metamorphic (base substrate) specimens identified by the Rock Identifier community.

Learn about Sedimentary Or Metamorphic (Base Substrate) in the encyclopedia

Sard

White Obsidian

Conglomerate

Quartzite Sandstone

Quartzite Sandstone

Metabasalt

Eulysite

Breccia

Hornfels

Ironstone

Anthracite

Metaquartzite

Slate

Sandstone (Quartz-rich) (Arenite (SiO2 based)) — sedimentary

Sandstone (Quartz-rich)

Arenite (SiO2 based)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Muscovite Mica (Muscovite [KAl2(AlSi3O10)(OH)2]) — mineral

Muscovite Mica

Muscovite [KAl2(AlSi3O10)(OH)2]

River Cobble (Quartzite and Iron-stained Quartz) (Quartzite (SiO2 with iron oxide impurities)) — metamorphic

River Cobble (Quartzite and Iron-stained Quartz)

Quartzite (SiO2 with iron oxide impurities)

Greenstone (Greenschist / Meta-basalt) — metamorphic

Greenstone

Greenschist / Meta-basalt

Chalcedony (Agate Pebble) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate Pebble)

Silicon Dioxide (SiO2)

Sandstone (Ferruginous) (Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)) — sedimentary

Sandstone (Ferruginous)

Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)

Rhodonite (Manganese Inosilicate (Mn,Fe,Mg,Ca)SiO3) — mineral

Rhodonite

Manganese Inosilicate (Mn,Fe,Mg,Ca)SiO3

Tumbled Aventurine (SiO2 (Quartz with Fuchsite inclusions)) — mineral

Tumbled Aventurine

SiO2 (Quartz with Fuchsite inclusions)

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

Serpentine

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

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2) — metamorphic

Lepidolite

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2

Serpentine (Antigorite, Lizardite, or Chrysotile; (Mg, Fe)3Si2O5(OH)4) — metamorphic

Serpentine

Antigorite, Lizardite, or Chrysotile; (Mg, Fe)3Si2O5(OH)4

Muscovite Schist (Mica Schist (KAl2(AlSi3O10)(OH)2)) — metamorphic

Muscovite Schist

Mica Schist (KAl2(AlSi3O10)(OH)2)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Peach Aventurine (Silicon Dioxide (SiO2) with Hematite/Goethite inclusions) — mineral

Peach Aventurine

Silicon Dioxide (SiO2) with Hematite/Goethite inclusions

Granodiorite (Gneissic texture) (Granodiorite (containing Quartz SiO2, Plagioclase Feldspar, and Biotite)) — igneous

Granodiorite (Gneissic texture)

Granodiorite (containing Quartz SiO2, Plagioclase Feldspar, and Biotite)

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Dendritic Siltstone (Siltstone with Manganese Dendrites (MnO2)) — sedimentary

Dendritic Siltstone

Siltstone with Manganese Dendrites (MnO2)

Rhodonite (Rhodonite (Manganese Iron Magnesium Calcium Silicate - (Mn,Fe,Mg,Ca)SiO3)) — mineral

Rhodonite

Rhodonite (Manganese Iron Magnesium Calcium Silicate - (Mn,Fe,Mg,Ca)SiO3)

Serpentine / Antigorite (Mg3Si2O5(OH)4 (Serpentine Group)) — metamorphic

Serpentine / Antigorite

Mg3Si2O5(OH)4 (Serpentine Group)

Dendritic sandstone (Sandstone with Manganese Oxide dendrites) — sedimentary

Dendritic sandstone

Sandstone with Manganese Oxide dendrites

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Biotite Mica (K(Mg, Fe)3(AlSi3O10)(F, OH)2) — mineral

Biotite Mica

K(Mg, Fe)3(AlSi3O10)(F, OH)2

Fuchsite Schist (Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2) in Schist) — metamorphic

Fuchsite Schist

Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2) in Schist

Veined Limestone (Sedimentary Calcite-Veined Rock (CaCO3)) — sedimentary

Veined Limestone

Sedimentary Calcite-Veined Rock (CaCO3)

Fuchsite (Chromian Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)) — mineral

Fuchsite

Chromian Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)

Fossilized Shark Tooth (Carcharocles sp. or Striatolamia sp. (Phosphate/Carbonate mineralized Hydroxyapatite)) — sedimentary

Fossilized Shark Tooth

Carcharocles sp. or Striatolamia sp. (Phosphate/Carbonate mineralized Hydroxyapatite)

Garnetiferous Quartzite (Garnet Gneiss Pebble) (Garnet-bearing Quartzite or Quartz-Feldspar Gneiss) — metamorphic

Garnetiferous Quartzite (Garnet Gneiss Pebble)

Garnet-bearing Quartzite or Quartz-Feldspar Gneiss

Fragmented Sedimentary Pebble (Clastic Sedimentary Specimen) — sedimentary

Fragmented Sedimentary Pebble

Clastic Sedimentary Specimen

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Limestone with Fossil (Sedimentary limestone, calcium carbonate (CaCO3)) — sedimentary

Limestone with Fossil

Sedimentary limestone, calcium carbonate (CaCO3)

Veined Grey Metamorphic Pebble (Quartzo-feldspathic vein in Metabasalt / Serpentinite / Slate) — metamorphic

Veined Grey Metamorphic Pebble

Quartzo-feldspathic vein in Metabasalt / Serpentinite / Slate

Schist (Schist (Metamorphic Rock)) — metamorphic

Schist

Schist (Metamorphic Rock)

Green Schist (Greenschist (Chlorite Schist)) — metamorphic

Green Schist

Greenschist (Chlorite Schist)

Sandstone Pebble (Arenite) — sedimentary

Sandstone Pebble

Arenite

Granitoid (Granite/Gneiss mix) (Phaneritic Felsic Igneous Rock) — igneous

Granitoid (Granite/Gneiss mix)

Phaneritic Felsic Igneous Rock

Breccia (Sedimentary Breccia) — sedimentary

Breccia

Sedimentary Breccia

Muscovite on Quartz (Mica host rock) (KAl2(AlSi3O10)(OH)2 (Muscovite) in SiO2 (Quartz)) — igneous/metamorphic

Muscovite on Quartz (Mica host rock)

KAl2(AlSi3O10)(OH)2 (Muscovite) in SiO2 (Quartz)

igneous/metamorphic

Greenshist / Chlorite Schist (Chlorite schist (contains (Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6)) — metamorphic

Greenshist / Chlorite Schist

Chlorite schist (contains (Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6)