Rock Identifier

Category

Mineral Specimen

Browse mineral specimen specimens identified by the Rock Identifier community.

Learn about Mineral Specimen in the encyclopedia

Emerald in Matrix

Emerald in Matrix

Aquamarine Matrix

Aquamarine Matrix

Morganite Crystal

Morganite Crystal

Emerald Crystal

Emerald Crystal

Aquamarine Crystal

Aquamarine Crystal

Mushroom Tourmaline

Mushroom Tourmaline

Glauconite

Hutcheonite

Halite

Sperrylite

Baddeleyite

Anatase

Hematite (Iron(III) oxide (Fe2O3)) — mineral

Hematite

Iron(III) oxide (Fe2O3)

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

Lepidolite

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

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Hematite (Iron(III) oxide (Fe2O3)) — mineral

Hematite

Iron(III) oxide (Fe2O3)

Hematite (Hematite (Fe2O3)) — mineral

Hematite

Hematite (Fe2O3)

Kyanite (Aluminum Silicate, Al2SiO5) — mineral

Kyanite

Aluminum Silicate, Al2SiO5

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Epidote (Ca2(Al,Fe)3(SiO4)3(OH)) — mineral

Epidote

Ca2(Al,Fe)3(SiO4)3(OH)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

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

Muscovite Mica

KAl2(AlSi3O10)(F,OH)2

Magnetite (Magnetite (Fe3O4)) — mineral

Magnetite

Magnetite (Fe3O4)

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

Muscovite Mica

KAl2(AlSi3O10)(OH)2

Green Fluorite (Calcium Fluoride (CaF2)) — mineral

Green Fluorite

Calcium Fluoride (CaF2)

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

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

Lepidolite

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

Hematite (Iron(III) oxide (Fe2O3)) — mineral

Hematite

Iron(III) oxide (Fe2O3)

Barite (Barium Sulfate (BaSO4)) — mineral

Barite

Barium Sulfate (BaSO4)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Calcite (Calcium Carbonate (CaCO3)) — mineral

Calcite

Calcium Carbonate (CaCO3)

Fuchsite (Cr-bearing Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)) — mineral

Fuchsite

Cr-bearing Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)

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

Quartz with Iron Staining

Silicon Dioxide (SiO2)

Sulfur in Quartz (S + SiO2) — mineral

Sulfur in Quartz

S + SiO2

Yellow Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz

Silicon Dioxide (SiO2)

Blue topaz-style pendant (stone identity uncertain) (Possibly blue topaz (Al₂SiO₄(F,OH)₂); the image cannot confirm whether the stone is natural or synthetic) — gemstone

Blue topaz-style pendant (stone identity uncertain)

Possibly blue topaz (Al₂SiO₄(F,OH)₂); the image cannot confirm whether the stone is natural or synthetic

Blue topaz-style pendant gemstone (Likely blue topaz (Al₂SiO₄(F,OH)₂); the image cannot confirm the stone or whether it is natural or synthetic.) — gemstone

Blue topaz-style pendant gemstone

Likely blue topaz (Al₂SiO₄(F,OH)₂); the image cannot confirm the stone or whether it is natural or synthetic.

Chalcopyrite (Copper Iron Sulfide (CuFeS2)) — mineral

Chalcopyrite

Copper Iron Sulfide (CuFeS2)

Limonite-stained Quartz (Silicon dioxide with iron oxide hydroxide, SiO2 + FeO(OH)·nH2O) — mineral

Limonite-stained Quartz

Silicon dioxide with iron oxide hydroxide, SiO2 + FeO(OH)·nH2O

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

Quartz with Iron Oxide Inclusions

Silicon Dioxide (SiO2) with Iron Hydroxide/Oxide (Limonite/Goethite)

Granite or Pegmatite with Tourmaline (Granitic Pegmatite) — igneous

Granite or Pegmatite with Tourmaline

Granitic Pegmatite

Malachite on limonite matrix (Malachite, Cu₂CO₃(OH)₂, with likely limonite/goethite iron-oxide matrix) — mineral

Malachite on limonite matrix

Malachite, Cu₂CO₃(OH)₂, with likely limonite/goethite iron-oxide matrix

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Quartz with Matrix

Silicon Dioxide (SiO2)

Iron-rich volcanic rock fragment (likely basalt or weathered scoria) (Basaltic rock; primarily plagioclase feldspar, pyroxene, and iron oxides) — igneous

Iron-rich volcanic rock fragment (likely basalt or weathered scoria)

Basaltic rock; primarily plagioclase feldspar, pyroxene, and iron oxides

Mixed small pebbles and mineral grains (Unidentified detrital sediment; likely quartz-, feldspar-, and lithic fragments) — sedimentary

Mixed small pebbles and mineral grains

Unidentified detrital sediment; likely quartz-, feldspar-, and lithic fragments

Kfeldspar with Quartz (Potassium Feldspar and Silicon Dioxide (KAlSi3O8 + SiO2)) — mineral

Kfeldspar with Quartz

Potassium Feldspar and Silicon Dioxide (KAlSi3O8 + SiO2)

Likely polished copper-bearing mineral specimen (possibly chrysocolla with iron-oxide staining) (Chrysocolla, Cu₂H₂Si₂O₅(OH)₄·nH₂O; identification uncertain from image) — mineral

Likely polished copper-bearing mineral specimen (possibly chrysocolla with iron-oxide staining)

Chrysocolla, Cu₂H₂Si₂O₅(OH)₄·nH₂O; identification uncertain from image

N/A (Non-Geological Object) — N/A

N/A (Non-Geological Object)

Vanadinite (Pb5(VO4)3Cl) — mineral

Vanadinite

Pb5(VO4)3Cl

Quartz and Mixed Minerals (Silicon Dioxide (SiO2)) — mineral

Quartz and Mixed Minerals

Silicon Dioxide (SiO2)

Pyrite-bearing metamorphic rock (likely schist or gneiss) (Pyrite (FeS₂) in a quartz–mica-rich host rock) — metamorphic

Pyrite-bearing metamorphic rock (likely schist or gneiss)

Pyrite (FeS₂) in a quartz–mica-rich host rock

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Quartz Vein in Host Rock

Silicon Dioxide (SiO2)