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

Yellow Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz

Silicon Dioxide (SiO2)

Microcline Feldspar (Amazonite or White Feldspar) (KAlSi3O8) — mineral

Microcline Feldspar (Amazonite or White Feldspar)

KAlSi3O8

Limonite (FeO(OH)·n(H2O)) — mineral

Limonite

FeO(OH)·n(H2O)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Pyrite in Quartz Matrix (Iron Sulfide (FeS2) embedded in Silicon Dioxide (SiO2)) — mineral

Pyrite in Quartz Matrix

Iron Sulfide (FeS2) embedded in Silicon Dioxide (SiO2)

Quartz crystal cluster in matrix (Silicon dioxide (SiO2)) — mineral

Quartz crystal cluster in matrix

Silicon dioxide (SiO2)

Potassium Feldspar (Orthoclase) (Orthoclase (KAlSi3O8)) — mineral

Potassium Feldspar (Orthoclase)

Orthoclase (KAlSi3O8)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Mineral (Silicon Dioxide (SiO2)) — mineral

Quartz Mineral

Silicon Dioxide (SiO2)

Chalcopyrite (Copper iron sulfide (CuFeS2)) — mineral

Chalcopyrite

Copper iron sulfide (CuFeS2)

K-Feldspar (Potassium Feldspar) (Potassium Feldspar (KAlSi3O8)) — mineral

K-Feldspar (Potassium Feldspar)

Potassium Feldspar (KAlSi3O8)

Mica / Muscovite or Biotite (Phyllosilicate mineral group (e.g., KAl2(AlSi3O10)(OH)2)) — mineral

Mica / Muscovite or Biotite

Phyllosilicate mineral group (e.g., KAl2(AlSi3O10)(OH)2)

Chalcopyrite (Peacock Ore) (Chalcopyrite (CuFeS2)) — mineral

Chalcopyrite (Peacock Ore)

Chalcopyrite (CuFeS2)

Mica (Muscovite or Biotite) (Sheet silicate mineral group (e.g., KAl2(AlSi3O10)(F,OH)2)) — mineral

Mica (Muscovite or Biotite)

Sheet silicate mineral group (e.g., KAl2(AlSi3O10)(F,OH)2)

Feldspar (Aluminosilicate (KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8)) — mineral

Feldspar

Aluminosilicate (KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8)

Chrysocolla with Malachite (Cu2-xAlx(H2-xSi2O5)(OH)4%CnH2O (Chrysocolla)) — mineral

Chrysocolla with Malachite

Cu2-xAlx(H2-xSi2O5)(OH)4%CnH2O (Chrysocolla)

Botryoidal Chalcedony / Quartz (Silicon Dioxide (SiO2)) — mineral

Botryoidal Chalcedony / Quartz

Silicon Dioxide (SiO2)

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

Epidote

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

Carved Mottled Greenish-Yellow Crystal/Glass Object (Unknown; possibly a form of quartz (chalcedony/jadeite/nephrite) or glass/resin.) — Man-made Object/Uncertain Mineral

Carved Mottled Greenish-Yellow Crystal/Glass Object

Unknown; possibly a form of quartz (chalcedony/jadeite/nephrite) or glass/resin.

Man-made Object/Uncertain Mineral

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

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

Quartz Druzy on Matrix

Silicon Dioxide (SiO2)

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

Mica

Muscovite / Biotite (Phyllosilicate group)

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 (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

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)

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)

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)

Chalcopyrite (Copper Iron Sulfide (CuFeS2)) — mineral

Chalcopyrite

Copper Iron Sulfide (CuFeS2)

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

Epidote

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

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

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

Hematite

Iron(III) oxide (Fe2O3)

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)

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)