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

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Quartz (Milky/Smoky variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Smoky variety)

Silicon Dioxide (SiO2)

Pyrite (Iron Pyrite) (Iron Sulfide (FeS2)) — mineral

Pyrite (Iron Pyrite)

Iron Sulfide (FeS2)

Gneiss (with Quartzite layers) (Gneissic Metamorphic Rock) — metamorphic

Gneiss (with Quartzite layers)

Gneissic Metamorphic Rock

Banded Gneiss (Gneiss (High-grade metamorphic rock)) — metamorphic

Banded Gneiss

Gneiss (High-grade metamorphic rock)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Gneiss with Quartz/Feldspar Vein (Quartz-Feldspathic Gneiss) — metamorphic

Gneiss with Quartz/Feldspar Vein

Quartz-Feldspathic Gneiss

Gneiss (Banded Gneiss) (Gneiss) — metamorphic

Gneiss (Banded Gneiss)

Gneiss

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

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

Hematite

Iron(III) oxide (Fe2O3)

Quartz (Milky or Rough Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky or Rough Quartz)

Silicon Dioxide (SiO2)

Carnelian (Carnelian (Silica, SiO2)) — mineral

Carnelian

Carnelian (Silica, SiO2)

Botryoidal Agate (Chalcedony (Silicon Dioxide, SiO2)) — mineral

Botryoidal Agate

Chalcedony (Silicon Dioxide, SiO2)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Greenstone / Chert (Cryptocrystalline Quartz (SiO2) or Altered Basalt) — sedimentary or metamorphic

Greenstone / Chert

Cryptocrystalline Quartz (SiO2) or Altered Basalt

sedimentary or metamorphic

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

Hematite

Iron(III) oxide (Fe2O3)

Quartz (Milky/Iron-stained) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Iron-stained)

Silicon Dioxide (SiO2)

Clear Quartz Geode (Crystalline Silicon Dioxide (SiO2)) — mineral

Clear Quartz Geode

Crystalline Silicon Dioxide (SiO2)

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Porphyritic Basalt (Chinese Flower Stone / Chrysanthemum Stone basalt variety) (Porphyritic Basalt containing Plagioclase Feldspar phenocrysts) — igneous

Porphyritic Basalt (Chinese Flower Stone / Chrysanthemum Stone basalt variety)

Porphyritic Basalt containing Plagioclase Feldspar phenocrysts

Grey River Pebble (Greywacke / Basalt) (Stream-rounded silicate rock pebble) — sedimentary

Grey River Pebble (Greywacke / Basalt)

Stream-rounded silicate rock pebble

Banded Agate (Cryptocrystalline Quartz (SiO2)) — sedimentary

Banded Agate

Cryptocrystalline Quartz (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Banded Gneiss (Banded Orthogneiss or Paragneiss (Quartz-Feldspathic Gneiss)) — metamorphic

Banded Gneiss

Banded Orthogneiss or Paragneiss (Quartz-Feldspathic Gneiss)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Blue Lace Agate (Silicon Dioxide (SiO₂)) — sedimentary

Blue Lace Agate

Silicon Dioxide (SiO₂)

Quartz (in a rock matrix) (Quartz (SiO2)) — mineral

Quartz (in a rock matrix)

Quartz (SiO2)

Red Quartz (Carnelian/Red Jasper Agate) (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — mineral

Red Quartz (Carnelian/Red Jasper Agate)

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Granite (Granite (Phaneritic Igneous Rock)) — igneous

Granite

Granite (Phaneritic Igneous Rock)

Basalt with Caliche Crust (Aphanitic Mafic Igneous Rock with Calcium Carbonate (CaCO3) coating) — igneous

Basalt with Caliche Crust

Aphanitic Mafic Igneous Rock with Calcium Carbonate (CaCO3) coating

Diabase (also known as Dolerite) (Diabase / Dolerite) — igneous

Diabase (also known as Dolerite)

Diabase / Dolerite

River Pebble (Quartz-rich) (Silicon Dioxide (SiO2) with impurities) — sedimentary

River Pebble (Quartz-rich)

Silicon Dioxide (SiO2) with impurities

White Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

White Quartz Pebble

Silicon Dioxide (SiO2)

Basalt River Stone (Basalt (Aphanitic Mafic Igneous Rock)) — igneous

Basalt River Stone

Basalt (Aphanitic Mafic Igneous Rock)

Bloodstone Jasper (Heliotrope) (SiO2 (Silicon Dioxide) - Cryptocrystalline Quartz) — sedimentary

Bloodstone Jasper (Heliotrope)

SiO2 (Silicon Dioxide) - Cryptocrystalline Quartz

Greenstone (Metamorphosed Mafic Igneous Rock) — metamorphic

Greenstone

Metamorphosed Mafic Igneous Rock

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Milky Quartz Pebble with Iron Inclusions (Silicon Dioxide (SiO2) with iron oxide impurities) — sedimentary

Milky Quartz Pebble with Iron Inclusions

Silicon Dioxide (SiO2) with iron oxide impurities

Quartz Cobble (with Iron Oxide Staining) (Microcrystalline to Macro crystalline Quartz (SiO2)) — sedimentary

Quartz Cobble (with Iron Oxide Staining)

Microcrystalline to Macro crystalline Quartz (SiO2)

Jasper-Agate (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Jasper-Agate

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Quartz (pebble) (Quartz (SiO₂)) — Mineral

Quartz (pebble)

Quartz (SiO₂)