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

Rose Quartz (Silicon Dioxide (SiO2)) — mineral

Rose Quartz

Silicon Dioxide (SiO2)

Copper Ore (Malachite and Azurite stained rock) (Cupriferous rock containing secondary copper carbonates) — mineral

Copper Ore (Malachite and Azurite stained rock)

Cupriferous rock containing secondary copper carbonates

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Peacock Ore (Bornite (Cu5FeS4) with surface tarnish) — mineral

Peacock Ore

Bornite (Cu5FeS4) with surface tarnish

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Amethyst Cluster (Silicon Dioxide (SiO2 with iron impurities)) — mineral

Amethyst Cluster

Silicon Dioxide (SiO2 with iron impurities)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Raw Emerald in Matrix (Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities) — mineral

Raw Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Amethyst (Amethyst (Silicon Dioxide, SiO2)) — mineral

Amethyst

Amethyst (Silicon Dioxide, SiO2)

Sunstone (Plagioclase Feldspar (Na,Ca)(Si,Al)4O8) — mineral

Sunstone

Plagioclase Feldspar (Na,Ca)(Si,Al)4O8

Rose Quartz Druzy (Silicon Dioxide (SiO2)) — mineral

Rose Quartz Druzy

Silicon Dioxide (SiO2)

Sunstone (Aventurine Feldspar (composition: (Ca,Na)((Al,Si)2Si2O8))) — mineral

Sunstone

Aventurine Feldspar (composition: (Ca,Na)((Al,Si)2Si2O8))

Milky Quartz with Iron Inclusions (Silicon Dioxide (SiO2) with Hematite/Limonite) — mineral

Milky Quartz with Iron Inclusions

Silicon Dioxide (SiO2) with Hematite/Limonite

Sunstone (Orthoclase or Oligoclase Feldspar (Na,Ca)(Al,Si)4O8) — mineral

Sunstone

Orthoclase or Oligoclase Feldspar (Na,Ca)(Al,Si)4O8

Sunstone (Aventurine Feldspar ((Ca,Na)(Al,Si)4O8)) — mineral

Sunstone

Aventurine Feldspar ((Ca,Na)(Al,Si)4O8)

Amethyst (Amethyst (Varietal of Quartz), SiO2 (Silicon Dioxide)) — mineral

Amethyst

Amethyst (Varietal of Quartz), SiO2 (Silicon Dioxide)

Uncertain small pale mineral fragment (Indeterminate; possibly calcite or a light-colored feldspar fragment) — mineral

Uncertain small pale mineral fragment

Indeterminate; possibly calcite or a light-colored feldspar fragment

Dyed mineral cluster, likely calcite or aragonite (Calcite (CaCO₃) or aragonite (CaCO₃), artificially color-enhanced) — mineral

Dyed mineral cluster, likely calcite or aragonite

Calcite (CaCO₃) or aragonite (CaCO₃), artificially color-enhanced

Pyrite with Galena and Sphalerite on Matrix (Iron Sulfide (FeS2), Lead Sulfide (PbS), Zinc Sulfide (ZnS)) — mineral

Pyrite with Galena and Sphalerite on Matrix

Iron Sulfide (FeS2), Lead Sulfide (PbS), Zinc Sulfide (ZnS)

Herkimer Diamond (Quartz (Silicon Dioxide) - SiO2) — mineral

Herkimer Diamond

Quartz (Silicon Dioxide) - SiO2

Epidote (Greenstone) (Calcium aluminum iron silicate hydroxide Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)) — metamorphic

Epidote (Greenstone)

Calcium aluminum iron silicate hydroxide Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)

Howlite (Howlite (Ca2B5SiO9(OH)5)) — mineral

Howlite

Howlite (Ca2B5SiO9(OH)5)

Greenschist (Greenschist (Chlorite-Albite-Epidote Schist)) — metamorphic

Greenschist

Greenschist (Chlorite-Albite-Epidote Schist)

Garnet (Almandine) (Almandine Fe3Al2(SiO4)3) — mineral

Garnet (Almandine)

Almandine Fe3Al2(SiO4)3

Prehnite (Prehnite (Ca2Al2Si3O10(OH)2)) — mineral

Prehnite

Prehnite (Ca2Al2Si3O10(OH)2)

Garnet (Almandine Garnet (Fe3Al2(SiO4)3)) — mineral

Garnet

Almandine Garnet (Fe3Al2(SiO4)3)

Blue Apatite (Ca5(PO4)3(F,Cl,OH)) — mineral

Blue Apatite

Ca5(PO4)3(F,Cl,OH)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Iron-stained Quartz (Silicon Dioxide with Limonite (SiO2 + FeO(OH)·nH2O)) — mineral

Iron-stained Quartz

Silicon Dioxide with Limonite (SiO2 + FeO(OH)·nH2O)

Magnetite (Iron(II,III) oxide (Fe3O4)) — mineral

Magnetite

Iron(II,III) oxide (Fe3O4)

Raw Calcite (Calcite (Calcium Carbonate - CaCO3)) — mineral

Raw Calcite

Calcite (Calcium Carbonate - CaCO3)

Rose quartz (Quartz (silicon dioxide, SiO₂), pink massive variety) — mineral

Rose quartz

Quartz (silicon dioxide, SiO₂), pink massive variety

Magnetite / Hematite mix (Magnetite (Fe3O4) and Hematite (Fe2O3)) — mineral

Magnetite / Hematite mix

Magnetite (Fe3O4) and Hematite (Fe2O3)

Quartz Druzy (Silicon Dioxide (SiO2)) — mineral

Quartz Druzy

Silicon Dioxide (SiO2)

Raw Garnet (Hessonite / Spessartine) (Silicate mineral group (X3Y2(SiO4)3)) — gemstone

Raw Garnet (Hessonite / Spessartine)

Silicate mineral group (X3Y2(SiO4)3)

Limonite (Yellow Ochre) (Hydrated Iron Oxide (FeO(OH)·nH2O)) — mineral

Limonite (Yellow Ochre)

Hydrated Iron Oxide (FeO(OH)·nH2O)

Prehnite (Prehnite (Ca2Al2Si3O10(OH)2)) — mineral

Prehnite

Prehnite (Ca2Al2Si3O10(OH)2)

Magnetite / Hematite (Iron Ore Pebble) (Fe3O4 (Magnetite) / Fe2O3 (Hematite)) — mineral

Magnetite / Hematite (Iron Ore Pebble)

Fe3O4 (Magnetite) / Fe2O3 (Hematite)

Chrysocolla (Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O)) — mineral

Chrysocolla

Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O)

Uncertain small metallic-looking mineral/rock fragment (Indeterminate; possibly galena-bearing rock or metallic slag) — mineral

Uncertain small metallic-looking mineral/rock fragment

Indeterminate; possibly galena-bearing rock or metallic slag

Limonite / Ironstone (Hydrated Iron Oxide (FeO(OH)·nH2O)) — sedimentary

Limonite / Ironstone

Hydrated Iron Oxide (FeO(OH)·nH2O)

Rose quartz (Quartz, silicon dioxide (SiO₂), pink variety) — mineral

Rose quartz

Quartz, silicon dioxide (SiO₂), pink variety