Rock Identifier

Category

Synthetic (Not A Rock Or Mineral)

Browse synthetic (not a rock or mineral) specimens identified by the Rock Identifier community.

Learn about Synthetic (Not A Rock Or Mineral) in the encyclopedia

Rock Salt

Calc-Silicate Rock

Calc-Silicate Rock

Halite

Dolomite

Gypsum

Coal

Claystone

Serpentinite

Carbonatite

Skarn

Schist

Emerald in Matrix

Emerald in Matrix

Desert Rose (Gypsum Rose) (Calcium Sulfate Dihydrate (CaSO4·2H2O)) — mineral

Desert Rose (Gypsum Rose)

Calcium Sulfate Dihydrate (CaSO4·2H2O)

Shale fragment (Shale (clay mineral rich sedimentary rock)) — sedimentary

Shale fragment

Shale (clay mineral rich sedimentary rock)

Schist (Mica Schist (Metamorphic rock)) — metamorphic

Schist

Mica Schist (Metamorphic rock)

Sandstone (Sedimentary Rock (Quartz Sandstone)) — sedimentary

Sandstone

Sedimentary Rock (Quartz Sandstone)

Sandstone with Dendritic Inclusions (Quartzose Sandstone) — sedimentary

Sandstone with Dendritic Inclusions

Quartzose Sandstone

Quartz Vein in Sandstone (Quartz (SiO2) in Clastic Sedimentary Rock) — sedimentary

Quartz Vein in Sandstone

Quartz (SiO2) in Clastic Sedimentary Rock

Garnet Amphibolite (or Garnet Gneiss) (Garnet amphibolite / Garnet-bearing metamorphic rock) — metamorphic

Garnet Amphibolite (or Garnet Gneiss)

Garnet amphibolite / Garnet-bearing metamorphic rock

Rhyolite (Porphyritic / Vesicular) (Rhyolite) — igneous

Rhyolite (Porphyritic / Vesicular)

Rhyolite

Agate Geode (Silicon Dioxide (Chalcedony/Quartz), SiO2) — sedimentary

Agate Geode

Silicon Dioxide (Chalcedony/Quartz), SiO2

Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2)) — mineral

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Amethyst (Amethyst (Silicon Dioxide - SiO2)) — mineral

Amethyst

Amethyst (Silicon Dioxide - SiO2)

Jasper (Silicon dioxide (SiO2)) — mineral

Jasper

Silicon dioxide (SiO2)

Sandstone (Sedimentary Clastic Rock (Quartz Arenite)) — sedimentary

Sandstone

Sedimentary Clastic Rock (Quartz Arenite)

Sandstone with Iron Concretion (Arenite with Limonite/Goethite Concretion) — sedimentary

Sandstone with Iron Concretion

Arenite with Limonite/Goethite Concretion

Milky quartz with dark host-rock inclusions (Quartz (SiO₂), likely in a granitic or metamorphic matrix) — mineral

Milky quartz with dark host-rock inclusions

Quartz (SiO₂), likely in a granitic or metamorphic matrix

Quartz Druzy (on Matrix) (Silicon Dioxide (SiO2)) — mineral

Quartz Druzy (on Matrix)

Silicon Dioxide (SiO2)

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

Red Sandstone Pebble (Sedimentary quartz sandstone) — sedimentary

Red Sandstone Pebble

Sedimentary quartz sandstone

Sandstone (Sedimentary Rock (Quartz Sandstone)) — sedimentary

Sandstone

Sedimentary Rock (Quartz Sandstone)

Unknown Tumbled Stone (Unknown (Too Blurry)) — mineral

Unknown Tumbled Stone

Unknown (Too Blurry)

Amygdaloidal Basalt (Amygdaloidal Basalt (with secondary mineral infilling)) — igneous

Amygdaloidal Basalt

Amygdaloidal Basalt (with secondary mineral infilling)

Gneiss (Gneiss (Metamorphic Rock)) — metamorphic

Gneiss

Gneiss (Metamorphic Rock)

Sandstone and Mixed Rock Assemblage (Clastic Sedimentary Rock / Quartz Arenite) — sedimentary

Sandstone and Mixed Rock Assemblage

Clastic Sedimentary Rock / Quartz Arenite

Banded Gneiss (Gneiss (high-grade metamorphic silicate rock)) — metamorphic

Banded Gneiss

Gneiss (high-grade metamorphic silicate rock)

Quartz Druzy on Matrix (Silicon Dioxide (SiO2)) — mineral

Quartz Druzy on Matrix

Silicon Dioxide (SiO2)

Granite / Quartzite Specimen (Granite / Quartz (SiO2 with Feldspar and Mica)) — igneous

Granite / Quartzite Specimen

Granite / Quartz (SiO2 with Feldspar and Mica)

Greenschist (or Serpentinite) with Quartz-Feldspar Vein (Metabasalt / Greenschist Facies Rock) — metamorphic

Greenschist (or Serpentinite) with Quartz-Feldspar Vein

Metabasalt / Greenschist Facies Rock

Shale (Clastic Sedimentary Rock) — sedimentary

Shale

Clastic Sedimentary Rock

Basalt Pebble (Basaltic Igneous Rock) — igneous

Basalt Pebble

Basaltic Igneous Rock

Sandstone (lithic/greywacke variant) (Clastic sedimentary rock (primarily SiO2 with rock fragments)) — sedimentary

Sandstone (lithic/greywacke variant)

Clastic sedimentary rock (primarily SiO2 with rock fragments)

Sandstone with Magnetite and Iron Staining (Clastic Sedimentary Rock (contains Fe3O4 and Limonite/Hematite)) — sedimentary

Sandstone with Magnetite and Iron Staining

Clastic Sedimentary Rock (contains Fe3O4 and Limonite/Hematite)

Muscovite Mica Schist (Metamorphic Rock (Muscovite-Biotite Schist)) — metamorphic

Muscovite Mica Schist

Metamorphic Rock (Muscovite-Biotite Schist)

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

Faceted Clear Quartz

Crystalline Silicon Dioxide (SiO2)

Clear Quartz (Silicon dioxide (SiO2)) — mineral

Clear Quartz

Silicon dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Crystal Point (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal Point

Silicon Dioxide (SiO2)

Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Granite (Specimen: Logan Rock) (Phaneritic plutonic igneous rock (mainly Quartz, Feldspar, and Mica)) — igneous

Granite (Specimen: Logan Rock)

Phaneritic plutonic igneous rock (mainly Quartz, Feldspar, and Mica)

Beach Pebble (Basalt/Porphyry) (Weathered Basalt or Porphyry) — igneous

Beach Pebble (Basalt/Porphyry)

Weathered Basalt or Porphyry

Sandstone (Sedimentary Rock (Quartz arenite or arkose)) — sedimentary

Sandstone

Sedimentary Rock (Quartz arenite or arkose)

Black Obsidian (Volcanic Glass (Amorphous SiO2 with trace impurities)) — igneous

Black Obsidian

Volcanic Glass (Amorphous SiO2 with trace impurities)

Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock