Rock Identifier

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Browse none specimens identified by the Rock Identifier community.

Gold (Gold (Au)) — mineral

Gold

Gold (Au)

Native Gold (in Jewelry) (Gold (Au)) — mineral

Native Gold (in Jewelry)

Gold (Au)

Riverstone Quartzite (Iron-stained) (Quartzite (primarily SiO2 with Limonite/Goethite staining)) — metamorphic

Riverstone Quartzite (Iron-stained)

Quartzite (primarily SiO2 with Limonite/Goethite staining)

Obsidian (Black) (Obsidian (High-silica volcanic glass)) — igneous

Obsidian (Black)

Obsidian (High-silica volcanic glass)

Black Obsidian (Volcanic Glass (SiO2 + impurities)) — Igneous

Black Obsidian

Volcanic Glass (SiO2 + impurities)

Green Slag Glass (Cullet (Amorphous Silicon Dioxide with impurities)) — Man-made rock-like material

Green Slag Glass

Cullet (Amorphous Silicon Dioxide with impurities)

Man-made rock-like material

Blue Quartzite (River Pebble) (Quartzite (primarily SiO2 with Dumortierite or Crocidolite inclusions)) — metamorphic

Blue Quartzite (River Pebble)

Quartzite (primarily SiO2 with Dumortierite or Crocidolite inclusions)

Quartzite (Quartzite (SiO2 silicon dioxide)) — metamorphic

Quartzite

Quartzite (SiO2 silicon dioxide)

Shungite (Carbonaceous rock (primarily amorphous carbon)) — Mineraloid

Shungite

Carbonaceous rock (primarily amorphous carbon)

Sandstone with trace fossil (Sandstone, possibly with Skolithos or similar trace fossil) — sedimentary

Sandstone with trace fossil

Sandstone, possibly with Skolithos or similar trace fossil

Black Obsidian (Volcanic Glass (SiO2)) — igneous

Black Obsidian

Volcanic Glass (SiO2)

Quartzite River Rock (Metamorphic Quartzite (primarily SiO2)) — metamorphic

Quartzite River Rock

Metamorphic Quartzite (primarily SiO2)

Quartzite pebble (Quartzite (primarily SiO2)) — metamorphic

Quartzite pebble

Quartzite (primarily SiO2)

Clear Quartz (Rock Crystal) (Quartz (SiO₂)) — Mineral

Clear Quartz (Rock Crystal)

Quartz (SiO₂)

Amethyst or Smoky Quartz Geode Slice (Crystalline Silicon Dioxide (SiO2) with iron impurities) — mineral

Amethyst or Smoky Quartz Geode Slice

Crystalline Silicon Dioxide (SiO2) with iron impurities

Pink Dyed Agate (Silicon Dioxide (SiO2) with synthetic pigment) — mineral

Pink Dyed Agate

Silicon Dioxide (SiO2) with synthetic pigment

Amber (Succinite (Organic Gemstone)) — mineral

Amber

Succinite (Organic Gemstone)

Green Aventurine (SiO2 (Silicon Dioxide with inclusions of Fuchsite mica)) — mineral

Green Aventurine

SiO2 (Silicon Dioxide with inclusions of Fuchsite mica)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Gold (Native Gold (Au)) — mineral

Gold

Native Gold (Au)

Sandstone (Arenite (SiO2 predominantly)) — sedimentary

Sandstone

Arenite (SiO2 predominantly)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Flint / Chert (Silicon dioxide (SiO2)) — sedimentary

Flint / Chert

Silicon dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Silver (Native Element) (Ag (Native Silver), with minor Copper (Cu)) — mineral

Silver (Native Element)

Ag (Native Silver), with minor Copper (Cu)

Amethyst (Tumbled) (Silicon Dioxide (SiO2) with iron impurities) — mineral

Amethyst (Tumbled)

Silicon Dioxide (SiO2) with iron impurities

Amber (Succinite (approximate formula C10H16O)) — mineral

Amber

Succinite (approximate formula C10H16O)

Agate Nodule / Weathered Chert (SiO2 (Silicon Dioxide - Microcrystalline Quartz)) — Sedimentary / Mineral

Agate Nodule / Weathered Chert

SiO2 (Silicon Dioxide - Microcrystalline Quartz)

Sedimentary / Mineral

Gold (Native Gold (Au)) — mineral

Gold

Native Gold (Au)

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

Quartz Pebble

Crystalline Silicon Dioxide (SiO2)

Amethyst (Silicon Dioxide (SiO2) with iron impurities) — mineral

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Portable Ceramic Space Heater (Polished Acrylonitrile Butadiene Styrene (ABS) Plastic with Ceramic Heating Elements) — not a rock (synthetic/industrial object)

Portable Ceramic Space Heater

Polished Acrylonitrile Butadiene Styrene (ABS) Plastic with Ceramic Heating Elements

not a rock (synthetic/industrial object)

Chert Pebble (Microcrystalline silica (SiO2)) — sedimentary

Chert Pebble

Microcrystalline silica (SiO2)

Citrine (Silicon dioxide (SiO2)) — mineral

Citrine

Silicon dioxide (SiO2)

Basalt (River Stone) (Basalt) — igneous

Basalt (River Stone)

Basalt

Chert (specifically Red Chert/Jasper) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Red Chert/Jasper)

Microcrystalline Quartz (SiO2)

Specular Hematite (Polished Sphere) (Hematite (Alpha Fe2O3)) — mineral

Specular Hematite (Polished Sphere)

Hematite (Alpha Fe2O3)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz pebble with surface markings (Silicon Dioxide (SiO2)) — mineral

Quartz pebble with surface markings

Silicon Dioxide (SiO2)

Amethyst (Faceted) (Quartz (SiO2) with iron impurities) — Mineral

Amethyst (Faceted)

Quartz (SiO2) with iron impurities

River Cobble (likely Quartzite) (Metamorphosed Sandstone (SiO2)) — metamorphic

River Cobble (likely Quartzite)

Metamorphosed Sandstone (SiO2)

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)