Rock Identifier

Category

Not A Rock

Browse not a rock specimens identified by the Rock Identifier community.

Conglomerate (Conglomerate (Clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (Clastic sedimentary rock)

Sandstone with Liesegang Rings (Arenite with Iron Oxide Concretions) — sedimentary

Sandstone with Liesegang Rings

Arenite with Iron Oxide Concretions

Basalt (with possible weathering or secondary mineral crust) (Basalt (Aphanitic Mafic Igneous Rock)) — Igneous

Basalt (with possible weathering or secondary mineral crust)

Basalt (Aphanitic Mafic Igneous Rock)

Basalt Riverstone (Basalt (Aphanitic Mafic Volcanic Rock)) — igneous

Basalt Riverstone

Basalt (Aphanitic Mafic Volcanic Rock)

Vesicular Basalt with Amygdaloidal Infill (Basalt (Mafic Extrusive Igneous Rock)) — igneous

Vesicular Basalt with Amygdaloidal Infill

Basalt (Mafic Extrusive Igneous Rock)

Basalt (Basalt (extrusive volcanic mafic rock)) — igneous

Basalt

Basalt (extrusive volcanic mafic rock)

Basalt (Vesicular) (Basalt (Extrusive Mafic Igneous Rock)) — igneous

Basalt (Vesicular)

Basalt (Extrusive Mafic Igneous Rock)

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

River Pebble (Basalt)

Basalt (Aphanitic Mafic Igneous Rock)

Pink Granite (Granite (Felsic Plutonic Rock)) — igneous

Pink Granite

Granite (Felsic Plutonic Rock)

Amygdaloidal Basalt (Amygdaloidal Mafic Volcanic Rock) — igneous

Amygdaloidal Basalt

Amygdaloidal Mafic Volcanic Rock

Granodiorite (Granodiorite (intermediate plutonic rock)) — igneous

Granodiorite

Granodiorite (intermediate plutonic rock)

Quartz Geode (partially formed/chalcedony with iron staining) (Quartz (SiO2) with Chalcedony (cryptocrystalline quartz) and likely Iron Oxides/Hydroxides) — Mineral/Sedimentary Rock Feature

Quartz Geode (partially formed/chalcedony with iron staining)

Quartz (SiO2) with Chalcedony (cryptocrystalline quartz) and likely Iron Oxides/Hydroxides

Mineral/Sedimentary Rock Feature

Shale or Mudstone (Based on appearance) (Shale (fine-grained, laminated fissile sedimentary rock) / Mudstone (fine-grained, non-fissile sedimentary rock)) — Sedimentary

Shale or Mudstone (Based on appearance)

Shale (fine-grained, laminated fissile sedimentary rock) / Mudstone (fine-grained, non-fissile sedimentary rock)

Sandstone (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone

Clastic sedimentary rock (primarily SiO2)

Biotite (Black Mica) (Biotite (K(Mg,Fe++)3AlSi3O10(OH,F)2)) — mineral

Biotite (Black Mica)

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

Gneiss (Gneiss (High-grade Metamorphic Rock)) — metamorphic

Gneiss

Gneiss (High-grade Metamorphic Rock)

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

Basalt River Stone

Basalt (Aphanitic Mafic Volcanic Rock)

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

Basalt River Pebble

Basalt (Aphanitic Mafic Igneous Rock)

Basalt with Vesicles (Aphanitic Mafic Volcanic Rock (Basalt)) — igneous

Basalt with Vesicles

Aphanitic Mafic Volcanic Rock (Basalt)

Basalt River Cobble (Basalt (Mafic Extrusive Igneous Rock)) — igneous

Basalt River Cobble

Basalt (Mafic Extrusive Igneous Rock)

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

Basalt

Basalt (Aphanitic Mafic Igneous Rock)

Basalt with Plagioclase Phenocrysts (Porphyritic Basalt) (Porphyritic Basalt (Mafic volcanic rock)) — igneous

Basalt with Plagioclase Phenocrysts (Porphyritic Basalt)

Porphyritic Basalt (Mafic volcanic rock)

Grey Basalt Pebble (Basalt (Aphanitic Mafic Volcanic Rock)) — igneous

Grey Basalt Pebble

Basalt (Aphanitic Mafic Volcanic Rock)

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

Basalt (River Stone)

Extrusive Mafic Igneous Rock (Basalt)

Basalt (Crushed Stone) (Basalt (Mafic Extrusive Igneous Rock)) — igneous

Basalt (Crushed Stone)

Basalt (Mafic Extrusive Igneous Rock)

Basalt (Basalt (Mafic Extrusive Igneous Rock)) — igneous

Basalt

Basalt (Mafic Extrusive Igneous Rock)

Basalt (Polished River Stone) (Basalt (Extrusive Mafic Volcanic Rock)) — igneous

Basalt (Polished River Stone)

Basalt (Extrusive Mafic Volcanic Rock)

Conglomerate (Clastic sedimentary rock (Conglomerate)) — sedimentary

Conglomerate

Clastic sedimentary rock (Conglomerate)

Scoria (Red Lava Rock) (Scoria (Extrusive Igneous Rock)) — Igneous

Scoria (Red Lava Rock)

Scoria (Extrusive Igneous Rock)

Granite Pebble (River Rock) (Phaneritic Felsic Igneous Rock) — igneous

Granite Pebble (River Rock)

Phaneritic Felsic Igneous Rock

Red Shale (Fissile Siliciclastic Sedimentary Rock) — sedimentary

Red Shale

Fissile Siliciclastic Sedimentary Rock

Dragon Blood Jasper (Epidote with Pietersite or Red Jasper (Ca2Al2Fe3+[Si2O7][SiO4]O(OH))) — metamorphic

Dragon Blood Jasper

Epidote with Pietersite or Red Jasper (Ca2Al2Fe3+[Si2O7][SiO4]O(OH))

Sandstone (Greywacke/Siltstone variant) (Arenite / Wacke (SiO2 with diverse mineral inclusions)) — sedimentary

Sandstone (Greywacke/Siltstone variant)

Arenite / Wacke (SiO2 with diverse mineral inclusions)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Basalt (Basalt (High-iron/magnesium silicate rock)) — igneous

Basalt

Basalt (High-iron/magnesium silicate rock)

Basalt (River Pebble) (Basalt) — igneous

Basalt (River Pebble)

Basalt

Shungite (Non-crystalline carbon (similar to anthracite coal or meta-anthracite)) — metamorphic

Shungite

Non-crystalline carbon (similar to anthracite coal or meta-anthracite)

Basalt with Secondary Mineral Inclusions (Amygdaloidal Basalt (Mafic volcanic rock, primarily Augite and Plagioclase)) — igneous

Basalt with Secondary Mineral Inclusions

Amygdaloidal Basalt (Mafic volcanic rock, primarily Augite and Plagioclase)

Serpentinite (Serpentinite (composed primarily of Serpentine group minerals like Antigorite, Lizardite, and Chrysotile)) — metamorphic

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals like Antigorite, Lizardite, and Chrysotile)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Greywacke with Quartz Vein (Matrix: Impure Sandstone (SiO2 + varied clasts), Veins: Quartz (SiO2)) — sedimentary

Greywacke with Quartz Vein

Matrix: Impure Sandstone (SiO2 + varied clasts), Veins: Quartz (SiO2)

Amygdaloidal Basalt (Amygdaloidal Basalt containing Zeolite and Calcite inclusions) — igneous

Amygdaloidal Basalt

Amygdaloidal Basalt containing Zeolite and Calcite inclusions