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

Citrine (Silicon Dioxide (Quartz var. citrine), SiO2) — mineral

Citrine

Silicon Dioxide (Quartz var. citrine), SiO2

Pink Halite (Sodium Chloride (NaCl)) — mineral

Pink Halite

Sodium Chloride (NaCl)

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

Quartz with Calcite / Geode Fragment (Silicon Dioxide (SiO2) / Calcium Carbonate (CaCO3)) — mineral

Quartz with Calcite / Geode Fragment

Silicon Dioxide (SiO2) / Calcium Carbonate (CaCO3)

Iron-Stained Quartz (Red Quartz) (Silicon Dioxide (SiO2) with Hematite/Limonite inclusions) — mineral

Iron-Stained Quartz (Red Quartz)

Silicon Dioxide (SiO2) with Hematite/Limonite inclusions

Quartz fragment (Silicon Dioxide (SiO2)) — mineral

Quartz fragment

Silicon Dioxide (SiO2)

Chrysocolla (Hydrated copper phyllosilicate, (Cu,Al)2H2Si2O5(OH)4·nH2O) — mineral

Chrysocolla

Hydrated copper phyllosilicate, (Cu,Al)2H2Si2O5(OH)4·nH2O

Galena (Lead Sulfide (PbS)) — mineral

Galena

Lead Sulfide (PbS)

Galena (Lead Sulfide (PbS)) — mineral

Galena

Lead Sulfide (PbS)

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

Almandine Garnet

Almandine, Fe3Al2(SiO4)3

Cinnabar (Mercury(II) sulfide (HgS)) — mineral

Cinnabar

Mercury(II) sulfide (HgS)

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

Hematite

Iron(III) oxide (Fe2O3)

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

Epidote

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

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz with Tourmaline (Silicon dioxide with complex boro-silicate (SiO2 + Na(Fe3+Al6)(BO3)3Si6O18(OH)4)) — mineral

Quartz with Tourmaline

Silicon dioxide with complex boro-silicate (SiO2 + Na(Fe3+Al6)(BO3)3Si6O18(OH)4)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

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

Amethyst

Silicon Dioxide (Quartz variety), SiO2

Quartz pebble (Silicon dioxide (SiO2)) — sedimentary

Quartz pebble

Silicon dioxide (SiO2)

Amazonite (Microcline feldspar, KAlSi3O8) — mineral

Amazonite

Microcline feldspar, KAlSi3O8

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

Sugilite

KNa2(Fe,Mn,Al)2Li3Si12O30

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

Amethyst

Silicon Dioxide (Quartz variety), SiO2

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Arfvedsonite (Na3(Fe2+4Fe3+)Si8O22(OH)2) — mineral

Arfvedsonite

Na3(Fe2+4Fe3+)Si8O22(OH)2

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

Amethyst

Quartz (Silicon Dioxide, SiO2)

Tourmaline in Quartz (Schorl in SiO2) — mineral

Tourmaline in Quartz

Schorl in SiO2

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))

Rose Quartz (Silicon Dioxide (SiO2)) — mineral

Rose Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Tourmaline and Mica in Pegmatite (Complex silicate mineral aggregate (Tourmaline subgroup / Muscovite or Biotite mica)) — igneous

Tourmaline and Mica in Pegmatite

Complex silicate mineral aggregate (Tourmaline subgroup / Muscovite or Biotite mica)

Carnelian Agate (Silicon Dioxide (Chalcedony variety), SiO2) — gemstone

Carnelian Agate

Silicon Dioxide (Chalcedony variety), SiO2

Tourmalinated Quartz (Silicon dioxide with sodium iron aluminum borosilicate (SiO2 + Na(Fe3+,Al)3Al6(BO3)3Si6O18(OH)4)) — mineral

Tourmalinated Quartz

Silicon dioxide with sodium iron aluminum borosilicate (SiO2 + Na(Fe3+,Al)3Al6(BO3)3Si6O18(OH)4)

Quartz (Silicon dioxide (SiO2)) — mineral

Quartz

Silicon dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

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

Rose quartz

Quartz, SiO₂ (pink variety)

Turquoise (likely tumbled or polished) (Turquoise, hydrated copper aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O) — gemstone

Turquoise (likely tumbled or polished)

Turquoise, hydrated copper aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O

Rose quartz (Quartz, SiO₂; pink coloration commonly associated with trace elements and microscopic inclusions) — mineral

Rose quartz

Quartz, SiO₂; pink coloration commonly associated with trace elements and microscopic inclusions

Likely black tourmaline (schorl) (Schorl, NaFe₃Al₆(BO₃)₃Si₆O₁₈(OH)₄) — mineral

Likely black tourmaline (schorl)

Schorl, NaFe₃Al₆(BO₃)₃Si₆O₁₈(OH)₄

Quartz Vein Rock (Silicon Dioxide (SiO2) within Host Rock) — mineral

Quartz Vein Rock

Silicon Dioxide (SiO2) within Host Rock

Celestine Geode (Celestine (Strontium Sulfate, SrSO4)) — mineral

Celestine Geode

Celestine (Strontium Sulfate, SrSO4)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)