Rock Identifier

Category

Non Geological

Browse non geological specimens identified by the Rock Identifier community.

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

metamorphic
Man-made Glass (Tumbled/Shaped) (Amorphous Silicon Dioxide (SiO2) with metal oxide colorants) — Mineraloid (synthetic)

Man-made Glass (Tumbled/Shaped)

Amorphous Silicon Dioxide (SiO2) with metal oxide colorants

Mineraloid (synthetic)
Black Obsidian (Volcanic Glass (SiO2 + impurities like Fe3O4)) — igneous

Black Obsidian

Volcanic Glass (SiO2 + impurities like Fe3O4)

igneous
Shale (Shale (Consolidated fine-grained clay/silt)) — sedimentary

Shale

Shale (Consolidated fine-grained clay/silt)

sedimentary
Serpentinite (Serpentinite (group of hydrous magnesium iron phyllosilicates)) — metamorphic

Serpentinite

Serpentinite (group of hydrous magnesium iron phyllosilicates)

metamorphic
Opalite (Synthetic Opalised Glass) — mineral

Opalite

Synthetic Opalised Glass

mineral
Mahogany Obsidian (Volcanic Glass (predominantly SiO2 with Hematite/Magnetite inclusions)) — igneous

Mahogany Obsidian

Volcanic Glass (predominantly SiO2 with Hematite/Magnetite inclusions)

igneous
Mahogany Obsidian (Volcanic Glass with Hematite or Magnetite inclusions (SiO2 + Fe2O3)) — igneous

Mahogany Obsidian

Volcanic Glass with Hematite or Magnetite inclusions (SiO2 + Fe2O3)

igneous
Ferro-slag (Leland Blue/Slag Glass) (Anthropogenic Vitreous Silica (Industrial Slag)) — igneous

Ferro-slag (Leland Blue/Slag Glass)

Anthropogenic Vitreous Silica (Industrial Slag)

igneous
Anthracite Coal (Anthracite) — metamorphic

Anthracite Coal

Anthracite

metamorphic
White Opal (Common) (Hydrated Silica (SiO2·nH2O)) — mineral

White Opal (Common)

Hydrated Silica (SiO2·nH2O)

mineral
Common Opal (Hydrated amorphous form of silica (SiO2·nH2O)) — mineral

Common Opal

Hydrated amorphous form of silica (SiO2·nH2O)

mineral
Anthracite (Anthracite Coal (C)) — sedimentary

Anthracite

Anthracite Coal (C)

sedimentary
Beach Quartzite Pebble (Quartzite (primarily SiO2)) — metamorphic

Beach Quartzite Pebble

Quartzite (primarily SiO2)

metamorphic
Mahogany Obsidian (Volcanic glass (SiO2 + Fe2O3)) — igneous

Mahogany Obsidian

Volcanic glass (SiO2 + Fe2O3)

igneous
Slate (Slate (Metamorphic Rock)) — metamorphic

Slate

Slate (Metamorphic Rock)

metamorphic
Obsidian (Obsidian (Volcanic Glass, ~70–75% SiO2)) — igneous

Obsidian

Obsidian (Volcanic Glass, ~70–75% SiO2)

igneous
Mahogany Obsidian (Volcanic Glass with Hematite/Magnetite inclusions) — igneous

Mahogany Obsidian

Volcanic Glass with Hematite/Magnetite inclusions

igneous
Quartzite Pebble (Quartzite (primarily SiO2)) — metamorphic

Quartzite Pebble

Quartzite (primarily SiO2)

metamorphic
Quartzite (Metamorphic Quartzite (predominantly SiO2)) — metamorphic

Quartzite

Metamorphic Quartzite (predominantly SiO2)

metamorphic
Amber (Succinite (specifically for Baltic amber); Chemical formula approximately C10H16O) — mineral

Amber

Succinite (specifically for Baltic amber); Chemical formula approximately C10H16O

mineral
Flesh-toned Siltstone (Siltstone (composed of microscopic Quartz and Feldspar grains)) — sedimentary

Flesh-toned Siltstone

Siltstone (composed of microscopic Quartz and Feldspar grains)

sedimentary
Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

metamorphic
Obsidian (Volcanic Glass (SiO2 rich)) — igneous

Obsidian

Volcanic Glass (SiO2 rich)

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

Opal

Hydrated Amorphous Silica (SiO2·nH2O)

Mineral
Amber (Succinite (approximate formula C10H16O)) — mineraloid

Amber

Succinite (approximate formula C10H16O)

mineraloid
Tektite (Indochinite) (Tektite (High-silica natural glass)) — igneous

Tektite (Indochinite)

Tektite (High-silica natural glass)

igneous
Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

sedimentary
Snowflake Obsidian (Volcanic Glass with Spherulite Inclusions (70-75% SiO2)) — igneous

Snowflake Obsidian

Volcanic Glass with Spherulite Inclusions (70-75% SiO2)

igneous
Black Obsidian (Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide) with impurities) — igneous

Black Obsidian

Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide) with impurities

igneous
Black Obsidian (Obsidian (Volcanic Glass)) — igneous

Black Obsidian

Obsidian (Volcanic Glass)

igneous
Shungite (Shungite (carbon-rich Precambrian mineraloid)) — mineral

Shungite

Shungite (carbon-rich Precambrian mineraloid)

mineral
Quartzite Pebbles (Quartzite (primarily SiO2)) — metamorphic

Quartzite Pebbles

Quartzite (primarily SiO2)

metamorphic
Quartzite (River Pebble) (Meta-quartzite (composed primarily of SiO2)) — metamorphic

Quartzite (River Pebble)

Meta-quartzite (composed primarily of SiO2)

metamorphic
Amber (Succinite (Organic Mineraloid) - C10H16O) — mineral

Amber

Succinite (Organic Mineraloid) - C10H16O

mineral
Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

metamorphic
Baltic Amber (Succinite (Polmerized conifer resin)) — mineraloid

Baltic Amber

Succinite (Polmerized conifer resin)

mineraloid
Sandstone (Arenite (Sedimentary rock comprising sand-sized grains)) — sedimentary

Sandstone

Arenite (Sedimentary rock comprising sand-sized grains)

sedimentary
Quartzite Pebble (Quartzite (primarily SiO2)) — metamorphic

Quartzite Pebble

Quartzite (primarily SiO2)

metamorphic
Obsidian Arrowhead (Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide)) — igneous

Obsidian Arrowhead

Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide)

igneous
Obsidian (Volcanic glass (SiO2 - Silicon Dioxide with impurities)) — igneous

Obsidian

Volcanic glass (SiO2 - Silicon Dioxide with impurities)

igneous
Amber (Succinite (fossilized resin)) — Organic Mineraloid

Amber

Succinite (fossilized resin)

Organic Mineraloid