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

Copper-bearing Quartz (with Malachite and Iron Oxides) (Quartz (SiO2) with Malachite (Cu2CO3(OH)2) and Hematite/Limonite (Fe2O3)) — Mineral Specimen

Copper-bearing Quartz (with Malachite and Iron Oxides)

Quartz (SiO2) with Malachite (Cu2CO3(OH)2) and Hematite/Limonite (Fe2O3)

Mineral Specimen

Polished garnet bead (likely almandine) (Almandine garnet, Fe₃Al₂(SiO₄)₃ (tentative visual identification)) — gemstone

Polished garnet bead (likely almandine)

Almandine garnet, Fe₃Al₂(SiO₄)₃ (tentative visual identification)

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

Epidote

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

Mica (Muscovite / Biotite (Phyllosilicate group)) — mineral

Mica

Muscovite / Biotite (Phyllosilicate group)

Quartz Druzy on Matrix (Silicon Dioxide (SiO2)) — mineral

Quartz Druzy on Matrix

Silicon Dioxide (SiO2)

Polished copper-bearing mineral specimen, likely malachite-rich copper ore (Malachite, Cu₂CO₃(OH)₂, possibly mixed with chrysocolla or limonite) — mineral

Polished copper-bearing mineral specimen, likely malachite-rich copper ore

Malachite, Cu₂CO₃(OH)₂, possibly mixed with chrysocolla or limonite

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)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

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)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Hematite (Hematite (Fe2O3)) — mineral

Hematite

Hematite (Fe2O3)

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

Hematite

Iron(III) oxide (Fe2O3)

Galena (Lead Sulfide (PbS)) — mineral

Galena

Lead Sulfide (PbS)

Apatite (Calcium phosphate fluoride/chloride, Ca5(PO4)3(F,Cl,OH)) — mineral

Apatite

Calcium phosphate fluoride/chloride, Ca5(PO4)3(F,Cl,OH)

Lepidolite (K(Li,Al)3(Al,Si,4)10(O,F,OH)2) — mineral

Lepidolite

K(Li,Al)3(Al,Si,4)10(O,F,OH)2

Pyrite in Matrix (Fool's Gold) (Iron Sulfide (FeS2)) — mineral

Pyrite in Matrix (Fool's Gold)

Iron Sulfide (FeS2)

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

Hematite

Iron(III) oxide (Fe2O3)

Hematite (Hematite (Fe2O3)) — mineral

Hematite

Hematite (Fe2O3)

Gypsum (variety Selenite or Alabaster) (Calcium sulfate dihydrate (CaSO4·2H2O)) — Mineral

Gypsum (variety Selenite or Alabaster)

Calcium sulfate dihydrate (CaSO4·2H2O)

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)

Polished blue-green metallic mineral specimen, likely bornite (“peacock ore”) (Bornite, Cu₅FeS₄; possibly chalcopyrite, CuFeS₂, with iridescent tarnish) — mineral

Polished blue-green metallic mineral specimen, likely bornite (“peacock ore”)

Bornite, Cu₅FeS₄; possibly chalcopyrite, CuFeS₂, with iridescent tarnish

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

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

Weathered porphyritic granite with lichen (Granite; predominantly quartz, feldspar, and mica (approximate composition)) — igneous

Weathered porphyritic granite with lichen

Granite; predominantly quartz, feldspar, and mica (approximate composition)

Chalcopyrite (Copper Iron Sulfide (CuFeS2)) — mineral

Chalcopyrite

Copper Iron Sulfide (CuFeS2)

Granite or Pegmatite with Tourmaline (Granitic Pegmatite) — igneous

Granite or Pegmatite with Tourmaline

Granitic Pegmatite

Unable to identify - Image contains non-geological items — N/A

Unable to identify - Image contains non-geological items

Emerald in Host Rock (Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities) — mineral

Emerald in Host Rock

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Copper Ore (Malachite and Azurite stained rock) (Copper-bearing rock with secondary copper carbonates) — mineral

Copper Ore (Malachite and Azurite stained rock)

Copper-bearing rock with secondary copper carbonates

Chalcopyrite (Copper Iron Sulfide (CuFeS2)) — mineral

Chalcopyrite

Copper Iron Sulfide (CuFeS2)

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

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)