Rock Identifier

Category

Mineral And Metamorphic Rock

Browse mineral and metamorphic rock specimens identified by the Rock Identifier community.

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

mineral
Amazonite (Microcline (KAlSi3O8) with lead impurities) — mineral

Amazonite

Microcline (KAlSi3O8) with lead impurities

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

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

mineral
Lazulite (Magnesium Aluminum Phosphate Hydroxide (MgAl2(PO4)2(OH)2)) — mineral

Lazulite

Magnesium Aluminum Phosphate Hydroxide (MgAl2(PO4)2(OH)2)

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

Smoky Quartz

Silicon Dioxide (SiO2)

mineral
Druzy Quartz on Sandstone (Silicon Dioxide (SiO2) with Quartz crystals) — sedimentary

Druzy Quartz on Sandstone

Silicon Dioxide (SiO2) with Quartz crystals

sedimentary
Moonstone (Orthoclase Feldspar (formula: (K,Na)AlSi3O8)) — mineral

Moonstone

Orthoclase Feldspar (formula: (K,Na)AlSi3O8)

mineral
Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

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

Green Aventurine

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

Mineral (variety of Quartz)
Optical Calcite (Iceland Spar) (Calcite (Calcium Carbonate, CaCO3)) — mineral

Optical Calcite (Iceland Spar)

Calcite (Calcium Carbonate, CaCO3)

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

Moonstone

Orthoclase (Potassium aluminum silicate - KAlSi3O8)

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

Black Tourmaline

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

mineral
Magnetite / Iron Ore (Magnetite (Fe3O4)) — mineral

Magnetite / Iron Ore

Magnetite (Fe3O4)

mineral
Blue Tiger's Eye (Hawks Eye) (Pseudomorph of Quartz after Crocidolite (SiO2)) — metamorphic

Blue Tiger's Eye (Hawks Eye)

Pseudomorph of Quartz after Crocidolite (SiO2)

metamorphic
Peacock Ore (Bornite (Cu5FeS4)) — mineral

Peacock Ore

Bornite (Cu5FeS4)

mineral
Soapstone (Steatite (composed primarily of Talc, Mg3Si4O10(OH)2)) — metamorphic

Soapstone

Steatite (composed primarily of Talc, Mg3Si4O10(OH)2)

metamorphic
Herkimer Diamond (Quartz (Silica - SiO2)) — mineral

Herkimer Diamond

Quartz (Silica - SiO2)

mineral
Quartz Mineral (Silicon Dioxide (SiO2)) — mineral

Quartz Mineral

Silicon Dioxide (SiO2)

mineral
Carnelian (Carnelian (a variety of Chalcedony, SiO ₂)) — Mineral (specifically a variety of Chalcedony, which is a cryptocrystalline quartz)

Carnelian

Carnelian (a variety of Chalcedony, SiO ₂)

Mineral (specifically a variety of Chalcedony, which is a cryptocrystalline quartz)
Amygdaloidal Basalt (Amygdaloidal Basalt with Secondary Infilling (e.g., Agate, Quartz, or Zeolite)) — igneous

Amygdaloidal Basalt

Amygdaloidal Basalt with Secondary Infilling (e.g., Agate, Quartz, or Zeolite)

igneous
Blue Kyanite (Kyanite (Al2SiO5)) — mineral

Blue Kyanite

Kyanite (Al2SiO5)

mineral
Rhodonite (Manganese Silicate (Mn,Fe,Mg,Ca)SiO3) — mineral

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

mineral
Rhodonite (Manganese Silicate (Mn,Fe,Mg,Ca)SiO3) — mineral

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

mineral
Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

mineral
Quartz with Chlorite or Hornblende inclusions (Silicon dioxide (SiO2) with phyllosilicate or amphibole inclusions) — metamorphic

Quartz with Chlorite or Hornblende inclusions

Silicon dioxide (SiO2) with phyllosilicate or amphibole inclusions

metamorphic
Green Aventurine (Silicon dioxide (SiO2) with inclusions of Fuchsite mica) — metamorphic

Green Aventurine

Silicon dioxide (SiO2) with inclusions of Fuchsite mica

metamorphic
Arsenopyrite in Quartz Matrix (Arsenopyrite (FeAsS) with Quartz (SiO2)) — mineral

Arsenopyrite in Quartz Matrix

Arsenopyrite (FeAsS) with Quartz (SiO2)

mineral
Milky Quartz (Quartz (Silica / Silicon Dioxide - SiO2)) — mineral

Milky Quartz

Quartz (Silica / Silicon Dioxide - SiO2)

mineral
Rhodochrosite (Manganese carbonate (MnCO3)) — mineral

Rhodochrosite

Manganese carbonate (MnCO3)

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

Sandstone (likely Ferruginous)

Arenite (primarily SiO2 with Fe2O3 staining)

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

Milky Quartz

Silicon Dioxide (SiO2)

mineral
Quartz (Milky or Cloudy variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky or Cloudy variety)

Silicon Dioxide (SiO2)

mineral
Milky Quartz with Iron Staining (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz with Iron Staining

Quartz (Silicon Dioxide, SiO2)

mineral
Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

sedimentary
Sodalite (Na8(Al6Si6O24)Cl2) — mineral

Sodalite

Na8(Al6Si6O24)Cl2

mineral
Labradorite (Labradorite (a calcium-enriched feldspar mineral), (Ca, Na)(Al, Si)4O8) — mineral

Labradorite

Labradorite (a calcium-enriched feldspar mineral), (Ca, Na)(Al, Si)4O8

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

Sodalite

Sodalite [Na8(Al6Si6O24)Cl2]

mineral
Mica in Quartz Host (Muscovite (KAl2(AlSi3O10)(OH)2) in Quartz (SiO2)) — igneous

Mica in Quartz Host

Muscovite (KAl2(AlSi3O10)(OH)2) in Quartz (SiO2)

igneous
Blue Sapphire (likely costume glass imitation) (Corundum (Al2O3) with iron/titanium impurities) — mineral

Blue Sapphire (likely costume glass imitation)

Corundum (Al2O3) with iron/titanium impurities

mineral
Muscovite Mica (Muscovite (KAl2(AlSi3O10)(F,OH)2)) — mineral

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(F,OH)2)

mineral
Sandstone (Arenite) — sedimentary

Sandstone

Arenite

sedimentary
Sandstone with Iron Concretion (Arenite with Limonite/Goethite Concretion) — sedimentary

Sandstone with Iron Concretion

Arenite with Limonite/Goethite Concretion

sedimentary