Rock Identifier

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Not A Rock Or Mineral

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

Amethyst (Silicon Dioxide with Iron impurities (SiO2 + Fe3+)) — mineral

Amethyst

Silicon Dioxide with Iron impurities (SiO2 + Fe3+)

Milky Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Dalmatian Stone (Dalmatian Jasper (Aplitic Rock)) — igneous

Dalmatian Stone

Dalmatian Jasper (Aplitic Rock)

Biotite Schist with Garnet (Garnet-Biotite Schist) — metamorphic

Biotite Schist with Garnet

Garnet-Biotite Schist

Gneiss (Cobble) (Gneiss) — metamorphic

Gneiss (Cobble)

Gneiss

Pyrite in Shale (Iron Disulfide (FeS2)) — mineral

Pyrite in Shale

Iron Disulfide (FeS2)

Almandine Garnet in Schist (Almandine, Fe3Al2(SiO4)3) — metamorphic

Almandine Garnet in Schist

Almandine, Fe3Al2(SiO4)3

Limonite (Iron Ore) (FeO(OH)·nH2O (Hydrated Iron Oxide)) — mineral

Limonite (Iron Ore)

FeO(OH)·nH2O (Hydrated Iron Oxide)

Yellow Quartz (Citrine or Iron-Stained Quartz) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine or Iron-Stained Quartz)

Silicon Dioxide (SiO2)

Grey Agate (Silicon Dioxide (SiO2) - Variety of Chalcedony) — mineral

Grey Agate

Silicon Dioxide (SiO2) - Variety of Chalcedony

Ferruginous Quartz (Quartz with Iron Oxide inclusions (SiO2 + Fe2O3)) — mineral

Ferruginous Quartz

Quartz with Iron Oxide inclusions (SiO2 + Fe2O3)

Fire Opal (Common/Precious in Matrix) (Hydrated Silica (SiO2·nH2O)) — mineral

Fire Opal (Common/Precious in Matrix)

Hydrated Silica (SiO2·nH2O)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Milky/Common) (Quartz (Silicon Dioxide, SiO2)) — mineral

Quartz (Milky/Common)

Quartz (Silicon Dioxide, SiO2)

Quartz Geode Fragment (Silicon Dioxide (SiO2)) — mineral

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Grey Agate (Tumbled) (Silicon Dioxide (SiO2)) — mineral

Grey Agate (Tumbled)

Silicon Dioxide (SiO2)

Desert Rose (Baryte or Gypsum Rose) (Baryte (BaSO4) or Gypsum (CaSO4·2H2O)) — mineral

Desert Rose (Baryte or Gypsum Rose)

Baryte (BaSO4) or Gypsum (CaSO4·2H2O)

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

Gneiss

Gneiss (High-grade Metamorphic Rock)

Sedimentary rock with quartz veining (Laminated siltstone or mudstone with hydrothermal quartz veins) — sedimentary

Sedimentary rock with quartz veining

Laminated siltstone or mudstone with hydrothermal quartz veins

Sandstone (Arenite (predominantly SiO2)) — sedimentary

Sandstone

Arenite (predominantly SiO2)

Granodiorite (Granodiorite (containing Plagioclase, Quartz, and K-feldspar)) — igneous

Granodiorite

Granodiorite (containing Plagioclase, Quartz, and K-feldspar)

Citrine (Heat-Treated Amethyst) (Silicon Dioxide (SiO2)) — mineral

Citrine (Heat-Treated Amethyst)

Silicon Dioxide (SiO2)

Carnelian Agate (Silicon Dioxide (SiO2) with iron oxide impurities) — mineral

Carnelian Agate

Silicon Dioxide (SiO2) with iron oxide impurities

Carnelian Agate (Silicon Dioxide (SiO2) - variety of Chalcedony) — mineral

Carnelian Agate

Silicon Dioxide (SiO2) - variety of Chalcedony

Milky Quartz (among River Rock) (Quartz (Silicon Dioxide, SiO2)) — Mineral

Milky Quartz (among River Rock)

Quartz (Silicon Dioxide, SiO2)

Rose Quartz (Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Moss Agate (Silicon Dioxide (SiO2) with inclusions of Manganese or Iron oxide) — mineral

Moss Agate

Silicon Dioxide (SiO2) with inclusions of Manganese or Iron oxide

Rose Quartz (Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese

Jasper (Silicon dioxide (SiO2) with iron oxide inclusions) — sedimentary

Jasper

Silicon dioxide (SiO2) with iron oxide inclusions

Granodiorite Pebble (Granodiorite (containing Quartz, Plagioclase Feldspar, and Biotite/Amphibole)) — igneous

Granodiorite Pebble

Granodiorite (containing Quartz, Plagioclase Feldspar, and Biotite/Amphibole)

River Chalcedony / Agate (Chalcedony (Silicon Dioxide, SiO2)) — mineral

River Chalcedony / Agate

Chalcedony (Silicon Dioxide, SiO2)

Yellow Jasper (Silicon Dioxide (SiO2)) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2)

Granite (Intrusive igneous felsic rock) — igneous

Granite

Intrusive igneous felsic rock

Banded Gneiss with Quartz Vein (Foliated Metamorphic Rock (Gneiss)) — metamorphic

Banded Gneiss with Quartz Vein

Foliated Metamorphic Rock (Gneiss)

Granite (Phaneritic plutonic rock (Felsic)) — igneous

Granite

Phaneritic plutonic rock (Felsic)

Schist (Schist (various mineralogical compositions including mica, chlorite, talc, etc.)) — Metamorphic

Schist

Schist (various mineralogical compositions including mica, chlorite, talc, etc.)

Granite Cobble (Plutonic Igneous Rock (Granitic)) — igneous

Granite Cobble

Plutonic Igneous Rock (Granitic)

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))

Granite (Phaneritic Igneous Rock (Granite)) — igneous

Granite

Phaneritic Igneous Rock (Granite)

Granodiorite (Granodiorite) — igneous

Granodiorite

Granodiorite

Turquoise in Matrix (Hydrous phosphate of copper and aluminium, CuAl6(PO4)4(OH)8·4H2O) — mineral

Turquoise in Matrix

Hydrous phosphate of copper and aluminium, CuAl6(PO4)4(OH)8·4H2O

Granite Gneiss (Gneiss (derived from granitic protolith)) — metamorphic

Granite Gneiss

Gneiss (derived from granitic protolith)