Rock Identifier

Category

Sedimentary And Igneous

Browse sedimentary and igneous specimens identified by the Rock Identifier community.

Learn about Sedimentary And Igneous in the encyclopedia

Carbonatite

Conglomerate

Quartzite Sandstone

Quartzite Sandstone

Breccia

Ironstone

Lamproite

Troctolite

Basalt

Gabbro

Kimberlite

Diorite

Coal

Nephrite Jade (Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)) — metamorphic

Nephrite Jade

Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Hematite (Iron(III) oxide (Fe2O3)) — mineral

Hematite

Iron(III) oxide (Fe2O3)

Greenstone / Diabase Porphyry (Porphyritic Diabase (Micro-gabbro)) — Igneous

Greenstone / Diabase Porphyry

Porphyritic Diabase (Micro-gabbro)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Banded Agate (Onyx variant) (Silicon dioxide (SiO2)) — sedimentary

Banded Agate (Onyx variant)

Silicon dioxide (SiO2)

Agate (Cryptocrystalline Quartz (SiO2)) — sedimentary

Agate

Cryptocrystalline Quartz (SiO2)

Banded Agate (Cryptocrystalline Quartz (SiO2)) — sedimentary

Banded Agate

Cryptocrystalline Quartz (SiO2)

Quartz (Silicon Dioxide (SiO2)) — Mineral

Quartz

Silicon Dioxide (SiO2)

Carnelian (Carnelian (SiO2 with Iron Oxide impurities)) — mineral

Carnelian

Carnelian (SiO2 with Iron Oxide impurities)

Magnetite (Magnetite (Fe3O4)) — Mineral

Magnetite

Magnetite (Fe3O4)

Chert on Volcanic Host Rock (Sedimentary Chert (SiO2) within Basalt or Andesite) — sedimentary

Chert on Volcanic Host Rock

Sedimentary Chert (SiO2) within Basalt or Andesite

Pumice (Pumice (extrusive volcanic glass)) — igneous

Pumice

Pumice (extrusive volcanic glass)

Quartz / Limestone Gravel (SiO2 (Silicon Dioxide) and CaCO3 (Calcium Carbonate)) — igneous and sedimentary mixture

Quartz / Limestone Gravel

SiO2 (Silicon Dioxide) and CaCO3 (Calcium Carbonate)

igneous and sedimentary mixture

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Black Beach Pebble (Basalt/Greywacke Pebble) (Aphanitic Mafic Igneous Rock / Basalt) — igneous

Black Beach Pebble (Basalt/Greywacke Pebble)

Aphanitic Mafic Igneous Rock / Basalt

Basalt River Pebble (Basalt) — igneous

Basalt River Pebble

Basalt

Quartz pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz pebble

Silicon Dioxide (SiO2)

Fancy Jasper (Agate (Silicon Dioxide, SiO2)) — sedimentary

Fancy Jasper

Agate (Silicon Dioxide, SiO2)

Bloodstone (Heliotrope) (Silicon Dioxide (SiO2) with inclusions of Chlorite or Actinolite) — sedimentary

Bloodstone (Heliotrope)

Silicon Dioxide (SiO2) with inclusions of Chlorite or Actinolite

Clear Quartz (Quartz (Silicon Dioxide, SiO2)) — Mineral

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Sandstone (Arkose) (Arkose Sandstone (SiO2 with KAlSi3O8)) — sedimentary

Sandstone (Arkose)

Arkose Sandstone (SiO2 with KAlSi3O8)

Granite Sand (Decomposed Granite) (Grus / Quartz-Feldspar Detritus) — sedimentary

Granite Sand (Decomposed Granite)

Grus / Quartz-Feldspar Detritus

Glacial Granite with Epidote (Granite featuring Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))) — igneous

Glacial Granite with Epidote

Granite featuring Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

Common Opal in Host Rock (Hydrated Silica (SiO2·nH2O)) — mineraloid

Common Opal in Host Rock

Hydrated Silica (SiO2·nH2O)

Beach Pebble (Basalt / Greywacke) (Basalt (or fine-grained Sedimentary Greywacke)) — igneous

Beach Pebble (Basalt / Greywacke)

Basalt (or fine-grained Sedimentary Greywacke)

Greenstone / Glauconitic Siltstone (Metabasalt or Glauconite-rich Sedimentary Rock) — metamorphic or sedimentary

Greenstone / Glauconitic Siltstone

Metabasalt or Glauconite-rich Sedimentary Rock

metamorphic or sedimentary

Greenstone / Greenschist (Greenschist facies metamorphic rock) — metamorphic

Greenstone / Greenschist

Greenschist facies metamorphic rock

Magnetite (Magnetite (Fe3O4)) — Mineral

Magnetite

Magnetite (Fe3O4)

Greenstone (Epidosite / Chlorite Schist) (Metabasalt (often contains Epidote Ca2Al2(Fe3+,Al)(SiO4)(Si2O7)O(OH) or Chlorite)) — metamorphic

Greenstone (Epidosite / Chlorite Schist)

Metabasalt (often contains Epidote Ca2Al2(Fe3+,Al)(SiO4)(Si2O7)O(OH) or Chlorite)

Quartz Vein in Host Rock (Quartz (SiO2) in Mafic or Sedimentary Matrix) — igneous

Quartz Vein in Host Rock

Quartz (SiO2) in Mafic or Sedimentary Matrix

Dark Agate / Chalcedony (Microcrystalline Quartz (SiO2)) — sedimentary

Dark Agate / Chalcedony

Microcrystalline Quartz (SiO2)

Nile Agate (Silicon Dioxide (SiO2)) — sedimentary

Nile Agate

Silicon Dioxide (SiO2)

Cryptocrystalline Quartz (Agate/Chert) (Silicon dioxide (SiO2)) — sedimentary

Cryptocrystalline Quartz (Agate/Chert)

Silicon dioxide (SiO2)

River Rock (Basalt/Greywacke) (Aphanitic Basalt or Lithic Sandstone (Greywacke)) — igneous

River Rock (Basalt/Greywacke)

Aphanitic Basalt or Lithic Sandstone (Greywacke)

Quartz Geode (Silicon Dioxide (SiO2) within a sedimentary/igneous host) — mineral

Quartz Geode

Silicon Dioxide (SiO2) within a sedimentary/igneous host

Milky Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Pink Granite (Phaneritic Quartz-Feldspar Plutonic Rock) — igneous

Pink Granite

Phaneritic Quartz-Feldspar Plutonic Rock

Dragon Blood Jasper (Epidote with Red Piedmontite (silicate)) — sedimentary

Dragon Blood Jasper

Epidote with Red Piedmontite (silicate)