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

Desert Rose (Gypsum (CaSO4·2H2O) or Barite (BaSO4)) — mineral

Desert Rose

Gypsum (CaSO4·2H2O) or Barite (BaSO4)

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

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Orange Quartz (Silicon Dioxide (SiO2)) — mineral

Orange Quartz

Silicon Dioxide (SiO2)

Garnet in Matrix (Almandine garnet in quartz-feldspar matrix) — metamorphic

Garnet in Matrix

Almandine garnet in quartz-feldspar matrix

Goethite (Goethite (alpha-FeO(OH))) — mineral

Goethite

Goethite (alpha-FeO(OH))

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Common Opal (SiO2·nH2O) — mineraloid

Common Opal

SiO2·nH2O

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Amazonite (Microcline feldspar (KAlSi3O8)) — mineral

Amazonite

Microcline feldspar (KAlSi3O8)

Peacock Ore (Bornite (Cu5FeS4)) — mineral

Peacock Ore

Bornite (Cu5FeS4)

Black Tourmaline (Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)4)) — mineral

Black Tourmaline

Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)4)

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Amethyst (Super Seven / Melody's Stone Variety) (Silicon Dioxide (SiO2) with trace impurities including Iron) — mineral

Amethyst (Super Seven / Melody's Stone Variety)

Silicon Dioxide (SiO2) with trace impurities including Iron

Quartz with Tourmaline and Iron Staining (Silicon Dioxide (SiO2) with accessory tourmaline and limonite) — mineral

Quartz with Tourmaline and Iron Staining

Silicon Dioxide (SiO2) with accessory tourmaline and limonite

Raw Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Raw Citrine Quartz

Silicon Dioxide (SiO2)

Red Jasper (Microcrystalline Quartz (Chalcedony), SiO2) — sedimentary

Red Jasper

Microcrystalline Quartz (Chalcedony), SiO2

Common Opal (SiO2·nH2O (Hydrated Silicon Dioxide)) — mineraloid

Common Opal

SiO2·nH2O (Hydrated Silicon Dioxide)

Quartz Crystal Cluster (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Bismuthinite with Chalcopyrite and Quartz (Bismuthinite (Bi2S3) and Chalcopyrite (CuFeS2)) — mineral

Bismuthinite with Chalcopyrite and Quartz

Bismuthinite (Bi2S3) and Chalcopyrite (CuFeS2)

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

Fuchsite

K(Al,Cr)2(AlSi3O10)(OH)2

Quartz Vein Rock with Feldspar (Silicon Dioxide (SiO2) with Potassium Feldspar) — mineral

Quartz Vein Rock with Feldspar

Silicon Dioxide (SiO2) with Potassium Feldspar

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)

Peridot in Matrix (Olivine (Mg,Fe)2SiO4) — gemstone

Peridot in Matrix

Olivine (Mg,Fe)2SiO4

Pegmatite (Igneous Pegmatite) — igneous

Pegmatite

Igneous Pegmatite

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

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

Epidote

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

Blue Quartz (Silicon Dioxide (SiO2)) — mineral

Blue Quartz

Silicon Dioxide (SiO2)

Desert Rose (Gypsum (CaSO4·2H2O) or Barite (BaSO4)) — mineral

Desert Rose

Gypsum (CaSO4·2H2O) or Barite (BaSO4)

Limonite (FeO(OH)•nH2O) — mineral

Limonite

FeO(OH)•nH2O

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

Lepidolite in Quartz

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

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

Quartz with Mineral Inclusions

Silicon Dioxide (SiO2)

Small dark metallic-looking mineral grain, possibly magnetite (Magnetite (Fe₃O₄), tentative identification) — mineral

Small dark metallic-looking mineral grain, possibly magnetite

Magnetite (Fe₃O₄), tentative identification

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Milky Quartz with Tourmaline (Silicon dioxide with schorl, SiO2) — mineral

Milky Quartz with Tourmaline

Silicon dioxide with schorl, SiO2

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)