Rock Identifier

Category

Non Geological

Browse non geological specimens identified by the Rock Identifier community.

Quartzite (Quartzite) — metamorphic

Quartzite

Quartzite

Quartzite (Metamorphosed Quartz Sandstone (SiO2)) — metamorphic

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

Quartzite (Metamorphosed Quartz Sandstone (primarily SiO2)) — metamorphic

Quartzite

Metamorphosed Quartz Sandstone (primarily SiO2)

Opal (Hydrated Amorphous Silica (SiO2·nH2O)) — Mineral

Opal

Hydrated Amorphous Silica (SiO2·nH2O)

Quartzite (Metamorphosed Quartz Sandstone (SiO2)) — metamorphic

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

Sandstone (Weathered Coastal Boulder) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (Weathered Coastal Boulder)

Arenite (composed primarily of SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Granite (Felsic Plutonic Rock (primarily SiO2)) — igneous

Granite

Felsic Plutonic Rock (primarily SiO2)

Jet (Lignite (Anthracite-grade compact coal)) — sedimentary

Jet

Lignite (Anthracite-grade compact coal)

Conglomerate (Red Sandstone variety) (Clastic Sedimentary Rock (Conglomeratic Sandstone)) — sedimentary

Conglomerate (Red Sandstone variety)

Clastic Sedimentary Rock (Conglomeratic Sandstone)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Siltstone with flute casts or scratch marks (Clastic Sedimentary Rock (Siltstone/Fine-grained Sandstone)) — sedimentary

Siltstone with flute casts or scratch marks

Clastic Sedimentary Rock (Siltstone/Fine-grained Sandstone)

Quartzite (River Cobble) (Quartzite (Metamorphosed Quartz Sandstone, SiO2)) — metamorphic

Quartzite (River Cobble)

Quartzite (Metamorphosed Quartz Sandstone, SiO2)

Rough Precious Opal (Hydrated Silica (SiO2·nH2O)) — mineral

Rough Precious Opal

Hydrated Silica (SiO2·nH2O)

Corundum (Corundum (Aluminium oxide, Al2O3)) — mineral

Corundum

Corundum (Aluminium oxide, Al2O3)

Chert (Iron-stained) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Iron-stained)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Diorite (Spotted or Dalmatian Stone pattern) (Diorite) — igneous

Diorite (Spotted or Dalmatian Stone pattern)

Diorite

Puddingstone (Conglomerate) (Conglomerate (clastic sedimentary rock)) — sedimentary

Puddingstone (Conglomerate)

Conglomerate (clastic sedimentary rock)

Unknown Rock Specimen — igneous

Unknown Rock Specimen

Sandstone (likely Siltstone or Mudstone variety) (Clastic Sedimentary Rock (primarily SiO2 with iron oxides)) — sedimentary

Sandstone (likely Siltstone or Mudstone variety)

Clastic Sedimentary Rock (primarily SiO2 with iron oxides)

Quartzite (Orthoquartzite) (Quartzite (SiO2)) — metamorphic

Quartzite (Orthoquartzite)

Quartzite (SiO2)

Yellow Quartzite River Cobble (Meta-quartzite (SiO2 with iron oxide staining)) — metamorphic

Yellow Quartzite River Cobble

Meta-quartzite (SiO2 with iron oxide staining)

Quartzite (Quartzite (Primary mineral: Silicon Dioxide, SiO2)) — metamorphic

Quartzite

Quartzite (Primary mineral: Silicon Dioxide, SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Gneiss (specifically a Banded Gneiss cobble) (Gneiss (composed mainly of Quartz, Feldspar, and Biotite/Amphibole)) — metamorphic

Gneiss (specifically a Banded Gneiss cobble)

Gneiss (composed mainly of Quartz, Feldspar, and Biotite/Amphibole)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Chert (Flint variety) (Microcrystalline Silica (SiO2)) — sedimentary

Chert (Flint variety)

Microcrystalline Silica (SiO2)

Amber (Dark/Black Variety) (Succinite (Resinite), C10H16O) — mineral

Amber (Dark/Black Variety)

Succinite (Resinite), C10H16O

Quartzite River Rock (with Limonite staining) (Quartzite (SiO2)) — metamorphic

Quartzite River Rock (with Limonite staining)

Quartzite (SiO2)

Pumice (Pumice (Vesicular Volcanic Glass)) — igneous

Pumice

Pumice (Vesicular Volcanic Glass)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Red Sandstone (Old Red Sandstone Pebble) (Arenite with iron oxide (Fe2O3) cement) — sedimentary

Red Sandstone (Old Red Sandstone Pebble)

Arenite with iron oxide (Fe2O3) cement

Red Mudstone (Siltstone) (Lutite (primarily Quartz and Clay minerals with Hematite)) — sedimentary

Red Mudstone (Siltstone)

Lutite (primarily Quartz and Clay minerals with Hematite)

Pumice (Vesicular volcanic glass (primarily SiO2 with Al2O3)) — Igneous

Pumice

Vesicular volcanic glass (primarily SiO2 with Al2O3)

Pumice (Pumice (a volcanic glass, primarily SiO2 with Al2O3)) — igneous

Pumice

Pumice (a volcanic glass, primarily SiO2 with Al2O3)

Conglomerate (Conglomerative Sedimentary Rock) — sedimentary

Conglomerate

Conglomerative Sedimentary Rock

Conglomerate (Conglomerate (Sedimentary rock containing rounded clasts)) — sedimentary

Conglomerate

Conglomerate (Sedimentary rock containing rounded clasts)

Sea Glass (Amorphous Silica (Anthropogenic glass) - SiO2) — mineral

Sea Glass

Amorphous Silica (Anthropogenic glass) - SiO2

Conglomerate (Clastic sedimentary rock (Conglomerate)) — sedimentary

Conglomerate

Clastic sedimentary rock (Conglomerate)

Banded River Cobble with Mafic Dike (Hydrothermally altered Graywacke or Sandstone with Mafic Intrusion) — igneous and sedimentary

Banded River Cobble with Mafic Dike

Hydrothermally altered Graywacke or Sandstone with Mafic Intrusion

igneous and sedimentary

Slag (Industrial Glass/Metal Waste) (Artificial silicate/ferro-silicate byproduct) — Mineraloid (Industrial byproduct)

Slag (Industrial Glass/Metal Waste)

Artificial silicate/ferro-silicate byproduct

Mineraloid (Industrial byproduct)

Asphalt (Road Aggregate) (Bituminous Conglomerate / Asphalt Concrete) — Anthropogenic (Man-made)

Asphalt (Road Aggregate)

Bituminous Conglomerate / Asphalt Concrete

Anthropogenic (Man-made)