Rock Identifier

Category

Mineral (Processed Alloy)

Browse mineral (processed alloy) specimens identified by the Rock Identifier community.

Blue Apatite (Fluorapatite (Ca5(PO4)3F)) — mineral

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Greenstone / Metabasalt (Chlorite schist or Epidiorite) — metamorphic

Greenstone / Metabasalt

Chlorite schist or Epidiorite

Unidentified gray rock/mineral specimen (Indeterminate; possibly quartz-rich rock or a metallic sulfide-bearing specimen) — mineral

Unidentified gray rock/mineral specimen

Indeterminate; possibly quartz-rich rock or a metallic sulfide-bearing specimen

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

Sandstone (Ferruginous)

Arenite (composed primarily of SiO2 with Fe2O3 staining)

Garden Quartz (Lodolite) (Quartz with inclusions (SiO2 + various inclusions such as Chlorite, Hematite, or Feldspar)) — mineral

Garden Quartz (Lodolite)

Quartz with inclusions (SiO2 + various inclusions such as Chlorite, Hematite, or Feldspar)

Banded Gneiss (Gneiss) — metamorphic

Banded Gneiss

Gneiss

Mixed Gemstone and Mineral Collection (Mixed Silica and Carbonate minerals (SiO2, CaSO4·2H2O, etc.)) — mineral

Mixed Gemstone and Mineral Collection

Mixed Silica and Carbonate minerals (SiO2, CaSO4·2H2O, etc.)

Banded Agate (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — sedimentary

Banded Agate

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

N/A - Image does not contain a rock or mineral (Anthropogenic textile material) — Non-geological

N/A - Image does not contain a rock or mineral

Anthropogenic textile material

Copper Ore Bearing Rock (Host rock with secondary copper minerals (such as Malachite, Azurite, and Chrysocolla)) — mineral

Copper Ore Bearing Rock

Host rock with secondary copper minerals (such as Malachite, Azurite, and Chrysocolla)

Quartz with Matrix (Silicon Dioxide (SiO2)) — mineral

Quartz with Matrix

Silicon Dioxide (SiO2)

Quartz (River Pebble) (Silicon Dioxide (SiO2)) — Mineral

Quartz (River Pebble)

Silicon Dioxide (SiO2)

Green Calcite (Calcium Carbonate (CaCO3)) — mineral

Green Calcite

Calcium Carbonate (CaCO3)

Hematite (Iron oxide (Fe2O3)) — mineral

Hematite

Iron oxide (Fe2O3)

Mammoth or Mastodon Tooth Fossil (Mammuthus / Mammut tooth) — fossil

Mammoth or Mastodon Tooth Fossil

Mammuthus / Mammut tooth

Shark Tooth Fossil (Vertebrate fossilized tooth (Chondrichthyes)) — fossil

Shark Tooth Fossil

Vertebrate fossilized tooth (Chondrichthyes)

Tiger's Eye (Silicon Dioxide (Quartz pseudomorph after crocidolite), $SiO_2$) — mineral

Tiger's Eye

Silicon Dioxide (Quartz pseudomorph after crocidolite), $SiO_2$

Hematite (Hematite (Fe2O3)) — mineral

Hematite

Hematite (Fe2O3)

Black Jasper (Silicon dioxide (SiO2) with carbon/mineral inclusions) — sedimentary

Black Jasper

Silicon dioxide (SiO2) with carbon/mineral inclusions

Lepidolite Ore (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2) — mineral

Lepidolite Ore

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2

Fossilized Shark Tooth (Root Portion) (Selachimorpha (partial specimen)) — fossil

Fossilized Shark Tooth (Root Portion)

Selachimorpha (partial specimen)

Blue Calcite (Calcium Carbonate (CaCO3)) — mineral

Blue Calcite

Calcium Carbonate (CaCO3)

Prehnite (Ca2Al(AlSi3O10)(OH)2) — mineral

Prehnite

Ca2Al(AlSi3O10)(OH)2

Aquamarine (Tumbled) (Beryl (Be3Al2Si6O18)) — mineral

Aquamarine (Tumbled)

Beryl (Be3Al2Si6O18)

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

Black Tourmaline

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

Pyrite (Fool's Gold) (Iron Disulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Magnetite (Small Granule) (Magnetite (Fe3O4)) — mineral

Magnetite (Small Granule)

Magnetite (Fe3O4)

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

Orange Calcite point

Calcite (Calcium Carbonate, CaCO3)

Jasper (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Jasper

Jasper (Silicon Dioxide, SiO2)

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

Green Aventurine

Aventurine Quartz (SiO2 with inclusions of Fuchsite mica)

Blue Calcite (Calcium Carbonate (CaCO3)) — mineral

Blue Calcite

Calcium Carbonate (CaCO3)

Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)) — metamorphic

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Fe2O3 cement)

Copper Ore (with Azurite and Malachite) (Cuprite, Azurite (Cu3(CO3)2(OH)2), Malachite (Cu2(CO3)(OH)2)) — mineral

Copper Ore (with Azurite and Malachite)

Cuprite, Azurite (Cu3(CO3)2(OH)2), Malachite (Cu2(CO3)(OH)2)

Granite (Intrusive igneous rock composed mainly of quartz, alkali feldspar, and plagioclase) — igneous

Granite

Intrusive igneous rock composed mainly of quartz, alkali feldspar, and plagioclase

Granite (Granite (Phaneritic Igneous Rock / Quartz, Feldspar, Mica)) — igneous

Granite

Granite (Phaneritic Igneous Rock / Quartz, Feldspar, Mica)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Vein in Host Rock (Silicon Dioxide (SiO2)) — mineral

Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

Tiger's Eye (Tiger's eye (Pseudomorph of Quartz after Crocidolite), SiO2) — metamorphic

Tiger's Eye

Tiger's eye (Pseudomorph of Quartz after Crocidolite), SiO2

Sandstone (Arenite (SiO2 secondary)) — sedimentary

Sandstone

Arenite (SiO2 secondary)

Hematite (Iron Ore) (Hematite (Fe2O3)) — mineral

Hematite (Iron Ore)

Hematite (Fe2O3)