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 (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Biotite (Black Mica) in Host Rock (K(Mg,Fe)3AlSi3O10(OH,F)2) — mineral

Biotite (Black Mica) in Host Rock

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

Mica Schist (Mica Schist (primarily Muscovite and Quartz)) — metamorphic

Mica Schist

Mica Schist (primarily Muscovite and Quartz)

Rhodonite Tumbled Chips (Manganese silicate (Mn,Fe,Mg,Ca)SiO3) — mineral

Rhodonite Tumbled Chips

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

Geode (Unopened) (Quartz/Chalcedony concretion) — sedimentary

Geode (Unopened)

Quartz/Chalcedony concretion

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

Lepidolite in Mica Schist

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

Quartzite (Quartzite (SiO2 silicon dioxide)) — metamorphic

Quartzite

Quartzite (SiO2 silicon dioxide)

Limonite-stained Quartz (Silicon Dioxide (SiO2) with Iron Oxide/Hydroxide (FeO(OH)·nH2O) staining) — mineral

Limonite-stained Quartz

Silicon Dioxide (SiO2) with Iron Oxide/Hydroxide (FeO(OH)·nH2O) staining

Aquamarine (Beryl (Be3Al2Si6O18)) — mineral

Aquamarine

Beryl (Be3Al2Si6O18)

Cone-in-cone structure (Limestone) (Cone-in-cone structure (Secondary Sedimentary Structure)) — sedimentary

Cone-in-cone structure (Limestone)

Cone-in-cone structure (Secondary Sedimentary Structure)

Sandstone (Pebble) (Sandstone (SiO2 dominated clastic sedimentary rock)) — sedimentary

Sandstone (Pebble)

Sandstone (SiO2 dominated clastic sedimentary rock)

Tumbled dark gray stone, likely basalt (Basalt; fine-grained mafic volcanic rock composed mainly of plagioclase feldspar and pyroxene, commonly with olivine) — igneous

Tumbled dark gray stone, likely basalt

Basalt; fine-grained mafic volcanic rock composed mainly of plagioclase feldspar and pyroxene, commonly with olivine

Limestone Pebble (Sedimentary Calcium Carbonate (CaCO3)) — sedimentary

Limestone Pebble

Sedimentary Calcium Carbonate (CaCO3)

Magnetite (Lodestone variety) (Magnetite (Fe3O4)) — mineral

Magnetite (Lodestone variety)

Magnetite (Fe3O4)

Quartz with Muscovite Mica (Silicon Dioxide (SiO2) with Potassium aluminum silicate hydroxide fluoride [KAl2(AlSi3O10)(F,OH)2]) — mineral

Quartz with Muscovite Mica

Silicon Dioxide (SiO2) with Potassium aluminum silicate hydroxide fluoride [KAl2(AlSi3O10)(F,OH)2]

Nuummite (Nuummite (Orthorhombic amphiboles: Anthophyllite and Gedrite)) — metamorphic

Nuummite

Nuummite (Orthorhombic amphiboles: Anthophyllite and Gedrite)

Fuchsite (Chromium-rich Muscovite (KAl2(AlSi3O10)(OH)2)) — mineral

Fuchsite

Chromium-rich Muscovite (KAl2(AlSi3O10)(OH)2)

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

Biotite Mica

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

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Sandstone (Water-worn Cobble) (Arenite (SiO2 based)) — sedimentary

Sandstone (Water-worn Cobble)

Arenite (SiO2 based)

Sandstone (likely Quartz Sandstone) (Arenite (SiO2 based)) — sedimentary

Sandstone (likely Quartz Sandstone)

Arenite (SiO2 based)

Bronzite (Enstatite (magnesium iron silicate), (Mg,Fe2+)SiO3) — mineral

Bronzite

Enstatite (magnesium iron silicate), (Mg,Fe2+)SiO3

Black Tourmaline (Schorl) (Schorl (Sodium iron silicate hydroxide boron silicate); NaFe3Al6(BO3)3Si6O18(OH)4) — mineral

Black Tourmaline (Schorl)

Schorl (Sodium iron silicate hydroxide boron silicate); NaFe3Al6(BO3)3Si6O18(OH)4

River Pebble (likely Quartzite or Siltstone) (Sedimentary Clast (SiO2 based)) — sedimentary

River Pebble (likely Quartzite or Siltstone)

Sedimentary Clast (SiO2 based)

Fossilized Shark Tooth (Bioapatite (Calcium Hydroxyapatite) replacement) — mineral

Fossilized Shark Tooth

Bioapatite (Calcium Hydroxyapatite) replacement

Sandstone (Ferruginous) (Sandstone (clastic sedimentary rock, mainly SiO2 with iron oxide cement)) — sedimentary

Sandstone (Ferruginous)

Sandstone (clastic sedimentary rock, mainly SiO2 with iron oxide cement)

Limestone Breccia (Sedimentary Breccia (Calcareous)) — sedimentary

Limestone Breccia

Sedimentary Breccia (Calcareous)

Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)) — Mineral

Epidote

Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Sandstone Pebble (Arenite (SiO2 based)) — sedimentary

Sandstone Pebble

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)

Sandstone (likely Red/Brown Sandstone) (Arenite (SiO2 based)) — sedimentary

Sandstone (likely Red/Brown Sandstone)

Arenite (SiO2 based)

Sandstone (with biological crust) (Arenite (SiO2 based)) — sedimentary

Sandstone (with biological crust)

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)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)