Rock Identifier

Category

Mineral Variant

Browse mineral variant specimens identified by the Rock Identifier community.

Granitic Pegmatite with Schorl (Granitic Pegmatite (Schorl: NaFe3Al6(Si6O18)(BO3)3(OH)3OH)) — igneous

Granitic Pegmatite with Schorl

Granitic Pegmatite (Schorl: NaFe3Al6(Si6O18)(BO3)3(OH)3OH)

Quartz (Riverstone / Cobble) (Silicon Dioxide (SiO2)) — mineral

Quartz (Riverstone / Cobble)

Silicon Dioxide (SiO2)

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Diamond (Diamond (C)) — mineral

Diamond

Diamond (C)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Sandstone with Quartz Vein (Arenite with Quartz (SiO2) Infilling) — sedimentary

Sandstone with Quartz Vein

Arenite with Quartz (SiO2) Infilling

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Unakite (Epidotized Granite) — metamorphic

Unakite

Epidotized Granite

Granite (Granite (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)) — igneous

Granite

Granite (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)

Granite (Phaneritic Igneous Rock (Granite)) — igneous

Granite

Phaneritic Igneous Rock (Granite)

Unable to Identify (Image Obscured) — Indeterminate

Unable to Identify (Image Obscured)

Diamond (Diamond (Pure Carbon, C)) — mineral

Diamond

Diamond (Pure Carbon, C)

Green Aventurine (Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)) — mineral

Green Aventurine

Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)

Granite (River Pebble) (Phaneritic intrusive igneous rock (Felsic)) — igneous

Granite (River Pebble)

Phaneritic intrusive igneous rock (Felsic)

Ruby in Matrix (Corundum (Al2O3)) — mineral

Ruby in Matrix

Corundum (Al2O3)

Green Aventurine (Silicon Dioxide (Quartz) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)) — metamorphic

Green Aventurine

Silicon Dioxide (Quartz) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)

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

Limonite (Ochreous)

FeO(OH)·nH2O (Hydrated Iron Oxide)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Shale (Shale (Sedimentary rock composed of mud/clay minerals)) — sedimentary

Shale

Shale (Sedimentary rock composed of mud/clay minerals)

Granitic Pegmatite with Tourmaline/Chlorite (Pegmatite) — Igneous

Granitic Pegmatite with Tourmaline/Chlorite

Pegmatite

Bornite (Bornite (Cu5FeS4)) — mineral

Bornite

Bornite (Cu5FeS4)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Banded Slate or Siltstone with Quartz/Calcite Veins (Protolith-derived Siltstone or Slate (varies based on degree of metamorphism)) — metamorphic

Banded Slate or Siltstone with Quartz/Calcite Veins

Protolith-derived Siltstone or Slate (varies based on degree of metamorphism)

Granite (Phaneritic Igneous Rock (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)) — igneous

Granite

Phaneritic Igneous Rock (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)

Green Aventurine (Aventurine Quartz (SiO2 + Fuchsite mica)) — Mineral

Green Aventurine

Aventurine Quartz (SiO2 + Fuchsite mica)

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Blue Sapphire (Corundum (Al2O3)) — mineral

Blue Sapphire

Corundum (Al2O3)

Pyrite (Iron Pyrite (FeS2)) — mineral

Pyrite

Iron Pyrite (FeS2)

Moonstone (Feldspar) (Orthoclase (KAlSi3O8) or Albite (NaAlSi3O8)) — mineral

Moonstone (Feldspar)

Orthoclase (KAlSi3O8) or Albite (NaAlSi3O8)

Sandstone (Ferruginous) (Arenite (primarily SiO2 with Fe2O3 staining)) — sedimentary

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Fe2O3 staining)

Chalcopyrite (Peacock Ore) (Chalcopyrite (CuFeS2)) — mineral

Chalcopyrite (Peacock Ore)

Chalcopyrite (CuFeS2)

Magnetite with Pyrite or Chalcopyrite inclusions (Magnetite (Fe3O4) with Pyrite (FeS2)) — mineral

Magnetite with Pyrite or Chalcopyrite inclusions

Magnetite (Fe3O4) with Pyrite (FeS2)

Schist (Mica Schist (primarily consisting of muscovite KAl2(AlSi3O10)(OH)2 or biotite K(Mg,Fe)3(AlSi3O10)(OH)2)) — metamorphic

Schist

Mica Schist (primarily consisting of muscovite KAl2(AlSi3O10)(OH)2 or biotite K(Mg,Fe)3(AlSi3O10)(OH)2)

Pegmatite (with Quartz and Feldspar) (Granitic Pegmatite) — igneous

Pegmatite (with Quartz and Feldspar)

Granitic Pegmatite

Slickenside in Limestone (Tectonized Limestone / Calcite (CaCO3)) — metamorphic (localized) or sedimentary

Slickenside in Limestone

Tectonized Limestone / Calcite (CaCO3)

metamorphic (localized) or sedimentary

Sandstone (with Liesegang rings or joints) (Clastic Sedimentary Rock (primarily Quartz with Iron Oxide cement)) — sedimentary

Sandstone (with Liesegang rings or joints)

Clastic Sedimentary Rock (primarily Quartz with Iron Oxide cement)

Rugose Coral (Horn Coral) (Order Rugosa (extinct fossilized coral)) — sedimentary

Rugose Coral (Horn Coral)

Order Rugosa (extinct fossilized coral)

Piddock bored rock (likely Mudstone or Shale) (Ichnofossil (Gastrochaenolites borings) in Fine-grained Sedimentary Rock) — sedimentary

Piddock bored rock (likely Mudstone or Shale)

Ichnofossil (Gastrochaenolites borings) in Fine-grained Sedimentary Rock

Quartz with Iron Oxide Inclusions (Silicon Dioxide (SiO2) with Hematite/Limonite) — mineral

Quartz with Iron Oxide Inclusions

Silicon Dioxide (SiO2) with Hematite/Limonite

Clear/White Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Clear/White Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

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

Ferruginous Quartz

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions

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

Limonite (Iron Ore)

Limonite (Hydrated Iron Oxide, FeO(OH)·nH2O)