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

Serafina (Serafinite / Clinochlore) (Clinochlore (Mg5Al)(AlSi3O10)(OH)8) — mineral

Serafina (Serafinite / Clinochlore)

Clinochlore (Mg5Al)(AlSi3O10)(OH)8

Gold (Native gold (Au)) — mineral

Gold

Native gold (Au)

Mica Schist (Mica Schist (varies based on mineral makeup, often Biotite/Muscovite schist)) — metamorphic

Mica Schist

Mica Schist (varies based on mineral makeup, often Biotite/Muscovite schist)

Sandstone (Arenite (SiO2 principal)) — sedimentary

Sandstone

Arenite (SiO2 principal)

Citrine (Heat-Treated Amethyst) (Silicon Dioxide (SiO2)) — mineral

Citrine (Heat-Treated Amethyst)

Silicon Dioxide (SiO2)

Sedimentary Sandstone (Arenite (Sedimentary Rock)) — sedimentary

Sedimentary Sandstone

Arenite (Sedimentary Rock)

Sandstone (Sandstone ( преимущественно SiO2 )) — sedimentary

Sandstone

Sandstone ( преимущественно SiO2 )

Epidote (Greenstone) (Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH))) — metamorphic

Epidote (Greenstone)

Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH))

Road-surface aggregate (crushed stone) (Unidentifiable mixed lithic aggregate; likely basaltic/andesitic fragments with feldspar, quartz, and weathered rock) — igneous

Road-surface aggregate (crushed stone)

Unidentifiable mixed lithic aggregate; likely basaltic/andesitic fragments with feldspar, quartz, and weathered rock

Epidote in Quartz (SiO2 with Ca2Al2(Fe3+,Al)(SiO4)3(OH)) — mineral

Epidote in Quartz

SiO2 with Ca2Al2(Fe3+,Al)(SiO4)3(OH)

Quartzite Pebble (with Quartz Vein) (Meta-quartzite (SiO2-dominated metamorphic rock)) — metamorphic

Quartzite Pebble (with Quartz Vein)

Meta-quartzite (SiO2-dominated metamorphic rock)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Coarse Sandstone (Arenite (SiO2 based)) — sedimentary

Coarse Sandstone

Arenite (SiO2 based)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

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)

Muscovite Mica (Muscovite / KAl2(AlSi3O10)(OH)2) — mineral

Muscovite Mica

Muscovite / KAl2(AlSi3O10)(OH)2

Pebble / Gravel (Clastic Sedimentary Specimen (likely Limestone or Quartzite base)) — sedimentary

Pebble / Gravel

Clastic Sedimentary Specimen (likely Limestone or Quartzite base)

Amethyst crystal (Silicon Dioxide (SiO2) with iron impurities) — mineral

Amethyst crystal

Silicon Dioxide (SiO2) with iron impurities

Quartz Vein in Matrix / Quartzite (Silicon Dioxide (SiO2) with host rock) — metamorphic

Quartz Vein in Matrix / Quartzite

Silicon Dioxide (SiO2) with host rock

Milky quartz (Quartz (silicon dioxide, SiO₂)) — mineral

Milky quartz

Quartz (silicon dioxide, SiO₂)

Sandstone (Quartzose) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Quartzose)

Arenite (primarily SiO2)

Epidote or Unakite Rock (Epidote-bearing rock / Ca2(Al,Fe)3(SiO4)3(OH)) — metamorphic

Epidote or Unakite Rock

Epidote-bearing rock / Ca2(Al,Fe)3(SiO4)3(OH)

Dendritic Agate (Silicon Dioxide with Iron or Manganese Oxides (SiO2)) — gemstone

Dendritic Agate

Silicon Dioxide with Iron or Manganese Oxides (SiO2)

Citrine (Silicon Dioxide (SiO2) with iron impurities) — gemstone

Citrine

Silicon Dioxide (SiO2) with iron impurities

Greenschist (Greenschist (Actinolite-Chlorite Schist)) — metamorphic

Greenschist

Greenschist (Actinolite-Chlorite Schist)

Sandstone Pebble (Sedimentary Rock (Quartzose Sandstone)) — sedimentary

Sandstone Pebble

Sedimentary Rock (Quartzose Sandstone)

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)

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

Muscovite Mica

KAl2(AlSi3O10)(OH)2

Quartz (Silicon Dioxide (SiO₂)) — Mineral

Quartz

Silicon Dioxide (SiO₂)

Chert (Common Chert) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Common Chert)

Cryptocrystalline Quartz (SiO2)

Gravel Pebble (Likely Quartzite or Basalt) (Quartzite (or Macrocrystalline Quartz)) — metamorphic

Gravel Pebble (Likely Quartzite or Basalt)

Quartzite (or Macrocrystalline Quartz)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Sandstone (Quartzose) (Arenite (SiO2 based)) — sedimentary

Sandstone (Quartzose)

Arenite (SiO2 based)

Sandstone and River Pebbles (Sedimentary Rock (Sandstone / Quartzite / Chert)) — sedimentary

Sandstone and River Pebbles

Sedimentary Rock (Sandstone / Quartzite / Chert)

Anthracite Coal (Anthracite (Carbon-based solid)) — metamorphic

Anthracite Coal

Anthracite (Carbon-based solid)

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

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)