Rock Identifier

Category

Igneous, Sedimentary, Metamorphic

Browse igneous, sedimentary, metamorphic specimens identified by the Rock Identifier community.

Learn about Igneous, Sedimentary, Metamorphic in the encyclopedia

Cordierite Hornfels

Cordierite Hornfels

Migmatite

Hornblende Schist

Hornblende Schist

Goldmanite

Quartz Vein / Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz Vein / Milky Quartz

Silicon Dioxide (SiO2)

Aquamarine (Beryl (Be3Al2Si6O18)) — mineral

Aquamarine

Beryl (Be3Al2Si6O18)

Quartz River Cobble (Silicon Dioxide (SiO2)) — Mineral (Primary constituent)

Quartz River Cobble

Silicon Dioxide (SiO2)

Mineral (Primary constituent)

Citrine (Heat-treated or Natural Quartz) (Silicon Dioxide (SiO2)) — mineral

Citrine (Heat-treated or Natural Quartz)

Silicon Dioxide (SiO2)

Orthoclase Feldspar (KAlSi3O8 (Potassium aluminum silicate)) — mineral

Orthoclase Feldspar

KAlSi3O8 (Potassium aluminum silicate)

Yellow Quartz (Citrine or Quartzite Pebble) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine or Quartzite Pebble)

Silicon Dioxide (SiO2)

Red Garnet (Pyrope or Almandine (Silicate group, X3Y2(SiO4)3)) — Mineral

Red Garnet

Pyrope or Almandine (Silicate group, X3Y2(SiO4)3)

Mixed Mineral Specimens (Mixed Silicates, Oxides, and Phosphates (SiO₂, Ca₅(PO₄)₃(F,Cl,OH), Na₈Al₆Si₆O₂₄Cl₂, etc.)) — mineral

Mixed Mineral Specimens

Mixed Silicates, Oxides, and Phosphates (SiO₂, Ca₅(PO₄)₃(F,Cl,OH), Na₈Al₆Si₆O₂₄Cl₂, etc.)

Orthoclase Feldspar (Potassium Feldspar (KAlSi3O8)) — mineral

Orthoclase Feldspar

Potassium Feldspar (KAlSi3O8)

Arfvedsonite in Quartz (also labeled as Astrophyllite or Nuummite by collectors) ([Na][Na2][Mg4Fe2+](Si8O22)(OH)2 in SiO2) — metamorphic

Arfvedsonite in Quartz (also labeled as Astrophyllite or Nuummite by collectors)

[Na][Na2][Mg4Fe2+](Si8O22)(OH)2 in SiO2

Citrine (Silicon Dioxide (SiO2)) — mineral

Citrine

Silicon Dioxide (SiO2)

Strawberry Quartz (Quartz with Hematite or Goethite inclusions (SiO2 + inclusions)) — mineral

Strawberry Quartz

Quartz with Hematite or Goethite inclusions (SiO2 + inclusions)

Sodalite (Sodalite (Na8(Al6Si6O24)Cl2)) — mineral

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Yellow Sapphire (Corundum (Al2O3) with iron impurities) — mineral

Yellow Sapphire

Corundum (Al2O3) with iron impurities

Sodalite (Sodalite - Na8(Al6Si6O24)Cl2) — mineral

Sodalite

Sodalite - Na8(Al6Si6O24)Cl2

Yellow Quartz (Citrine Quartzite) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine Quartzite)

Silicon Dioxide (SiO2)

Lemon Quartz (Orizaba/Citrinated Quartz) (Silicon Dioxide (SiO2) with iron impurities/treatment) — mineral

Lemon Quartz (Orizaba/Citrinated Quartz)

Silicon Dioxide (SiO2) with iron impurities/treatment

Moonstone (Orthoclase (Potassium aluminum silicate - KAlSi3O8)) — mineral

Moonstone

Orthoclase (Potassium aluminum silicate - KAlSi3O8)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartz Crystal (specifically Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal (specifically Rock Crystal)

Silicon Dioxide (SiO2)

Black Tourmaline (Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)) — mineral

Black Tourmaline

Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)

Peach Moonstone (Potassium Aluminum Silicate (KAlSi3O8)) — mineral

Peach Moonstone

Potassium Aluminum Silicate (KAlSi3O8)

Orthoclase Feldspar (KAlSi3O8 (Potassium Aluminum Silicate)) — mineral

Orthoclase Feldspar

KAlSi3O8 (Potassium Aluminum Silicate)

Blue Sapphire (Corundum (Al2O3)) — mineral

Blue Sapphire

Corundum (Al2O3)

Magnetite (Magnetite (Fe3O4)) — mineral

Magnetite

Magnetite (Fe3O4)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Unakite (Unakite Epidosite (Granite with epidote and orthoclase)) — metamorphic

Unakite

Unakite Epidosite (Granite with epidote and orthoclase)

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

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

Sapphire Rough (Corundum) (Corundum (Aluminum Oxide, Al2O3)) — mineral

Sapphire Rough (Corundum)

Corundum (Aluminum Oxide, Al2O3)

Moonstone (specifically Rainbow Moonstone / White Labradorite) (White Labradorite (Feldspar Group: (Na,Ca)(Al,Si)4O8)) — mineral

Moonstone (specifically Rainbow Moonstone / White Labradorite)

White Labradorite (Feldspar Group: (Na,Ca)(Al,Si)4O8)

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

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

Aventurine (Green Quartz)

Silicon Dioxide (SiO2) with inclusions of Fuchsite (Mica)

Smoky Quartz (Tumbled) (Smoky Quartz (Silicon Dioxide - SiO2)) — mineral

Smoky Quartz (Tumbled)

Smoky Quartz (Silicon Dioxide - SiO2)

Peacock Ore (Bornite (Cu5FeS4) or iridescent Chalcopyrite (CuFeS2)) — mineral

Peacock Ore

Bornite (Cu5FeS4) or iridescent Chalcopyrite (CuFeS2)

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

Smoky Quartz

Smoky Quartz (Silicon Dioxide, SiO2)

Smoky Quartz (Smoky Quartz (Silicon Dioxide - SiO2)) — mineral

Smoky Quartz

Smoky Quartz (Silicon Dioxide - SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Peacock Ore (Bornite (Cu5FeS4)) — mineral

Peacock Ore

Bornite (Cu5FeS4)