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

Milky Quartz (Ferruginous variety) (Silicon Dioxide (SiO2)) — mineral

Milky Quartz (Ferruginous variety)

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

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

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Blue Chalcedony (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2)

Garnet (Garnet group [X3Y2(SiO4)3]) — mineral

Garnet

Garnet group [X3Y2(SiO4)3]

Quartz Druzy (on Geode Fragments) (Silicon Dioxide (SiO2)) — mineral

Quartz Druzy (on Geode Fragments)

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

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

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Clear or Cloudy) (Silicon Dioxide (SiO2)) — mineral

Quartz (Clear or Cloudy)

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Grey Chalcedony (Agate) (Silicon Dioxide (SiO2)) — mineral

Grey Chalcedony (Agate)

Silicon Dioxide (SiO2)

Pyrulite (Pyrite / Chalcopyrite) (Iron Sulfide (FeS2) or Copper Iron Sulfide (CuFeS2)) — mineral

Pyrulite (Pyrite / Chalcopyrite)

Iron Sulfide (FeS2) or Copper Iron Sulfide (CuFeS2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Microcrystalline/Gravel) (Silicon Dioxide (SiO2)) — mineral

Quartz (Microcrystalline/Gravel)

Silicon Dioxide (SiO2)

Pyrite (Fool's Gold) (Iron Sulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Quartz (Gray/Smoky Varieties) (Silicon Dioxide (SiO2)) — mineral

Quartz (Gray/Smoky Varieties)

Silicon Dioxide (SiO2)

Quartz / Common Gravel (Silicon Dioxide (SiO2)) — mineral

Quartz / Common Gravel

Silicon Dioxide (SiO2)

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

Milky Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon dioxide (SiO2)

Epidote-bearing Granite (Unakite-like) (Epidotized Granite) — igneous

Epidote-bearing Granite (Unakite-like)

Epidotized Granite

Dalmatian Stone (Dalmatian Jasper) (Peralkaline Quartz-Feldspar Rock with Arfvedsonite) — igneous

Dalmatian Stone (Dalmatian Jasper)

Peralkaline Quartz-Feldspar Rock with Arfvedsonite

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

Magnetite (Lodestone)

Magnetite (Fe3O4)

Pyrite (on Shale/Matrix) (Iron Disulfide (FeS2)) — mineral

Pyrite (on Shale/Matrix)

Iron Disulfide (FeS2)

Granite (Felsic intrusive igneous rock) — igneous

Granite

Felsic intrusive igneous rock

Amethyst and mixed gemstone bracelet (Amethyst: purple quartz, silicon dioxide (SiO₂); likely accompanied by other quartz or decorative mineral beads) — gemstone

Amethyst and mixed gemstone bracelet

Amethyst: purple quartz, silicon dioxide (SiO₂); likely accompanied by other quartz or decorative mineral beads

Fossiliferous limestone, likely coral or shell-rich fragment (Calcite (CaCO₃), commonly bioclastic limestone containing fossilized marine organisms) — fossil

Fossiliferous limestone, likely coral or shell-rich fragment

Calcite (CaCO₃), commonly bioclastic limestone containing fossilized marine organisms

Banded Sandstone (Water-worn Pebble) (Arenite with mineral banding) — sedimentary

Banded Sandstone (Water-worn Pebble)

Arenite with mineral banding

Basalt pebble (Aphanitic Mafic Igneous Rock) — igneous

Basalt pebble

Aphanitic Mafic Igneous Rock

Magnetite (Iron Ore) (Magnetite (Fe3O4)) — mineral

Magnetite (Iron Ore)

Magnetite (Fe3O4)

Fine-grained gray sandstone or quartz-rich sedimentary pebble (Likely quartz arenite or lithic sandstone; exact identification requires microscopy or testing) — sedimentary

Fine-grained gray sandstone or quartz-rich sedimentary pebble

Likely quartz arenite or lithic sandstone; exact identification requires microscopy or testing

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

Vesicular basalt with secondary mineralization (Mafic volcanic rock, chiefly plagioclase and pyroxene, with iron oxides and likely zeolite/calcite infillings) — igneous

Vesicular basalt with secondary mineralization

Mafic volcanic rock, chiefly plagioclase and pyroxene, with iron oxides and likely zeolite/calcite infillings

Dalmatian Stone (Dalmatian Jasper (Peralkaline Quartz-Feldspar Rock)) — igneous

Dalmatian Stone

Dalmatian Jasper (Peralkaline Quartz-Feldspar Rock)

Quartz (likely Rose or Milky Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (likely Rose or Milky Quartz)

Silicon Dioxide (SiO2)

Clear quartz crystal (likely quartz bead/specimen) (Quartz, silicon dioxide (SiO₂)) — mineral

Clear quartz crystal (likely quartz bead/specimen)

Quartz, silicon dioxide (SiO₂)

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

Quartz (Quartzite / Iron-stained Quartz)

Silicon Dioxide (SiO2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

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

Quartz (Smoky/Milky)

Silicon Dioxide (SiO2)

Golden Calcite (Calcium Carbonate (CaCO3)) — mineral

Golden Calcite

Calcium Carbonate (CaCO3)