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

Conglomerate (Clastic sedimentary rock) — sedimentary

Conglomerate

Clastic sedimentary rock

Conglomerate (Clastic sedimentary rock) — sedimentary

Conglomerate

Clastic sedimentary rock

Chalcedony with Druzy Quartz (Silicon Dioxide (SiO2)) — mineral

Chalcedony with Druzy Quartz

Silicon Dioxide (SiO2)

Soapstone (steatite), possibly talc-rich schist (Steatite; predominantly talc, Mg₃Si₄O₁₀(OH)₂, with possible chlorite, mica, and carbonates) — metamorphic

Soapstone (steatite), possibly talc-rich schist

Steatite; predominantly talc, Mg₃Si₄O₁₀(OH)₂, with possible chlorite, mica, and carbonates

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Botryoidal Chalcedony (Chalcedony (SiO2)) — Mineral

Botryoidal Chalcedony

Chalcedony (SiO2)

Blue Aura Quartz (Silicon Dioxide (SiO2) with metallic vapor coating) — mineral

Blue Aura Quartz

Silicon Dioxide (SiO2) with metallic vapor coating

Banded gneiss (Gneiss, likely quartz–feldspar–mica gneiss) — metamorphic

Banded gneiss

Gneiss, likely quartz–feldspar–mica gneiss

Muscovite mica (mica schist fragment) (Muscovite, KAl₂(AlSi₃O₁₀)(OH)₂; possibly intergrown with quartz and feldspar) — mineral

Muscovite mica (mica schist fragment)

Muscovite, KAl₂(AlSi₃O₁₀)(OH)₂; possibly intergrown with quartz and feldspar

Labradorite (Plagioclase Feldspar (Ca,Na)(Al,Si)4O8) — mineral

Labradorite

Plagioclase Feldspar (Ca,Na)(Al,Si)4O8

Sunstone (Oligoclase (Plagioclase Feldspar subclass), (Ca,Na)(Al,Si)4O8) — mineral

Sunstone

Oligoclase (Plagioclase Feldspar subclass), (Ca,Na)(Al,Si)4O8

Biotite-rich gneiss (Foliated quartzo-feldspathic gneiss with biotite mica) — metamorphic

Biotite-rich gneiss

Foliated quartzo-feldspathic gneiss with biotite mica

Mica Schist (Mica Schist (primarily Muscovite or Biotite sheet silicates)) — metamorphic

Mica Schist

Mica Schist (primarily Muscovite or Biotite sheet silicates)

Mica (Muscovite / Phlogopite with Iridescence) (Phyllosilicate group (KAl2(AlSi3O10)(F,OH)2)) — mineral

Mica (Muscovite / Phlogopite with Iridescence)

Phyllosilicate group (KAl2(AlSi3O10)(F,OH)2)

Mica (Phlogopite / Biotite / Muscovite) — mineral

Mica

Phlogopite / Biotite / Muscovite

Muscovite Mica (Potassium aluminum silicate hydroxide fluoride (KAl2(AlSi3O10)(F,OH)2)) — mineral

Muscovite Mica

Potassium aluminum silicate hydroxide fluoride (KAl2(AlSi3O10)(F,OH)2)

Red Aventurine / Orange Quartzite (Silicon Dioxide (SiO2) with hematite/goethite inclusions) — metamorphic

Red Aventurine / Orange Quartzite

Silicon Dioxide (SiO2) with hematite/goethite inclusions

Schist (Mica Schist (Metamorphic Rock)) — metamorphic

Schist

Mica Schist (Metamorphic Rock)

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

Sandstone

Arenite (SiO2 based sedimentary rock)

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

Muscovite

KAl2(AlSi3O10)(OH)2

Quartz (Water-worn Pebbles) (Silicon Dioxide (SiO2)) — mineral

Quartz (Water-worn Pebbles)

Silicon Dioxide (SiO2)

Citrine (Crystalline Quartz (SiO2) with iron impurities) — mineral

Citrine

Crystalline Quartz (SiO2) with iron impurities

Eyed Jasper (Microcrystalline Quartz (SiO2)) — gemstone

Eyed Jasper

Microcrystalline Quartz (SiO2)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

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

Muscovite

KAl2(AlSi3O10)(OH)2

Blue Topaz (Al2SiO4(F,OH)2) — gemstone

Blue Topaz

Al2SiO4(F,OH)2

Conglomerate (Clastic Sedimentary Rock) — sedimentary

Conglomerate

Clastic Sedimentary Rock

Muscovite mica (Muscovite, KAl₂(AlSi₃O₁₀)(OH)₂) — mineral

Muscovite mica

Muscovite, KAl₂(AlSi₃O₁₀)(OH)₂

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

Biotite or Phlogopite Mica

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

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)

Quartz with Schist Inclusion (Quartz (SiO2) with micaceous schist inclusions) — metamorphic

Quartz with Schist Inclusion

Quartz (SiO2) with micaceous schist inclusions

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

Sandstone (Quartzose)

Arenite (composed primarily of SiO2)

Pink Jade (Dyed Quartzite) (Silicon Dioxide (SiO2) - primarily Quartzite or Quartz) — metamorphic

Pink Jade (Dyed Quartzite)

Silicon Dioxide (SiO2) - primarily Quartzite or Quartz

Citrine (Silicon Dioxide (SiO2)) — mineral

Citrine

Silicon Dioxide (SiO2)

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

Muscovite Mica

KAl2(AlSi3O10)(OH)2

Fuchsite (Chrome-bearing Muscovite [K(Al,Cr)2(AlSi3O10)(OH)2]) — mineral

Fuchsite

Chrome-bearing Muscovite [K(Al,Cr)2(AlSi3O10)(OH)2]

Emerald (Beryl (Be3Al2(SiO3)6)) — gemstone

Emerald

Beryl (Be3Al2(SiO3)6)

Sandstone (Pebble/Gravel Fragment) (Arenite (primarily SiO2 with mineral cement)) — sedimentary

Sandstone (Pebble/Gravel Fragment)

Arenite (primarily SiO2 with mineral cement)

Blue-green amphibole-bearing rock (possibly actinolite schist) (Likely actinolite-rich rock; actinolite, Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂) — metamorphic

Blue-green amphibole-bearing rock (possibly actinolite schist)

Likely actinolite-rich rock; actinolite, Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂

Chert Arrowhead (Jasper) (Chert (Cryptocrystalline Quartz, SiO2)) — sedimentary

Chert Arrowhead (Jasper)

Chert (Cryptocrystalline Quartz, SiO2)