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

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

Pyrite in Matrix (Fool's Gold)

Iron Disulfide (FeS2)

Amazonite (Microcline Feldspar (KAlSi3O8)) — mineral

Amazonite

Microcline Feldspar (KAlSi3O8)

Sodalite (Na8(Al6Si6O24)Cl2) — mineral

Sodalite

Na8(Al6Si6O24)Cl2

Sugilite (KNa2(Fe,Mn,Al)2Li3Si12O30) — mineral

Sugilite

KNa2(Fe,Mn,Al)2Li3Si12O30

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

Lepidolite

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

Ruby in Zoisite (Anyolite) — metamorphic

Ruby in Zoisite

Anyolite

Malachite (Malachite (Cu2CO3(OH)2)) — mineral

Malachite

Malachite (Cu2CO3(OH)2)

Epidote (likely Unakite component or Epidosite) (Epidote (Ca2(Al2Fe)(SiO4)(Si2O7)O(OH))) — metamorphic

Epidote (likely Unakite component or Epidosite)

Epidote (Ca2(Al2Fe)(SiO4)(Si2O7)O(OH))

Celestine (or Celestite) on Matrix (Celestine (SrSO4)) — mineral

Celestine (or Celestite) on Matrix

Celestine (SrSO4)

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

Amethyst

Amethyst (Silicon Dioxide, SiO2)

Charoite (K(Ca,Na)2Si4O10(OH,F)·H2O) — metamorphic

Charoite

K(Ca,Na)2Si4O10(OH,F)·H2O

Chrysocolla (Hydrated copper silicate (Cu,Al)2H2Si2O5(OH)4·n(H2O)) — mineral

Chrysocolla

Hydrated copper silicate (Cu,Al)2H2Si2O5(OH)4·n(H2O)

Amazonite (Potassium aluminum silicate (KAlSi3O8)) — mineral

Amazonite

Potassium aluminum silicate (KAlSi3O8)

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

Raw Emerald

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

Aquamarine (Beryl (Be3Al2Si6O18)) — mineral

Aquamarine

Beryl (Be3Al2Si6O18)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Galena (Lead sulfide (PbS)) — mineral

Galena

Lead sulfide (PbS)

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

Quartz with Iron Staining

Silicon dioxide (SiO2)

Chert (with Calcite layering) (Silicon Dioxide (SiO2) with Calcium Carbonate (CaCO3)) — sedimentary

Chert (with Calcite layering)

Silicon Dioxide (SiO2) with Calcium Carbonate (CaCO3)

Eudialyte (Na15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2) — mineral

Eudialyte

Na15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2

Serpentinite (Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4) — metamorphic

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

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

Apatite

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

Amazonite (Microcline Feldspar (KAlSi3O8)) — mineral

Amazonite

Microcline Feldspar (KAlSi3O8)

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

Epidote

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

Weathered dark mineral/rock fragment (Indeterminate; possibly iron-rich basalt, slag, or a sulfide-bearing mineral) — mineral

Weathered dark mineral/rock fragment

Indeterminate; possibly iron-rich basalt, slag, or a sulfide-bearing mineral

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

Amethyst (Quartz)

Silicon Dioxide (SiO2)

Chalcedony Agate Geode / Nodule (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — mineral

Chalcedony Agate Geode / Nodule

Silicon Dioxide (SiO2) - Microcrystalline Quartz

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

Muscovite

Muscovite, KAl2(AlSi3O10)(OH)2

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Milky/Smoky Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Smoky Quartz)

Silicon Dioxide (SiO2)

Mica Schist (Greenschist / Chlorite Schist) (Schist (rich in Muscovite, Chlorite, and Quartz)) — metamorphic

Mica Schist (Greenschist / Chlorite Schist)

Schist (rich in Muscovite, Chlorite, and Quartz)

Lake Superior Agate (Silicon Dioxide (SiO2) - Banded Chalcedony) — mineral

Lake Superior Agate

Silicon Dioxide (SiO2) - Banded Chalcedony

Quartz Druzy Geode Fragment (Silicon Dioxide (SiO2)) — mineral

Quartz Druzy Geode Fragment

Silicon Dioxide (SiO2)

White druzy quartz pendant with a blue crystal accent (Quartz (SiO₂); the blue material is not identifiable from the image) — mineral

White druzy quartz pendant with a blue crystal accent

Quartz (SiO₂); the blue material is not identifiable from the image

Specularite in Quartz (Specular Hematite (Fe2O3) in Quartz (SiO2)) — mineral

Specularite in Quartz

Specular Hematite (Fe2O3) in Quartz (SiO2)

Amethyst (Silicon Dioxide with Iron impurities (SiO2)) — mineral

Amethyst

Silicon Dioxide with Iron impurities (SiO2)

Amazonite (Potassium Feldspar (KAlSi3O8)) — mineral

Amazonite

Potassium Feldspar (KAlSi3O8)

Quartz Geode Fragment (Silicon dioxide (SiO2) within a nodule) — sedimentary

Quartz Geode Fragment

Silicon dioxide (SiO2) within a nodule

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

Smoky Quartz with Inclusions

Silicon Dioxide (SiO2)

Iron-rich breccia or weathered limonite-bearing rock (Goethite–limonite ironstone, possibly ferruginous breccia) — sedimentary

Iron-rich breccia or weathered limonite-bearing rock

Goethite–limonite ironstone, possibly ferruginous breccia

Sulfide Ore (likely Galena and Sphalerite in Quartz) (Lead-Zinc Ore (PbS and ZnS)) — mineral

Sulfide Ore (likely Galena and Sphalerite in Quartz)

Lead-Zinc Ore (PbS and ZnS)

Polished yellow gemstone fragments, likely citrine or yellow sapphire (Uncertain from image; likely quartz (SiO₂) if citrine, or corundum (Al₂O₃) if yellow sapphire) — gemstone

Polished yellow gemstone fragments, likely citrine or yellow sapphire

Uncertain from image; likely quartz (SiO₂) if citrine, or corundum (Al₂O₃) if yellow sapphire