Rock Identifier

Category

Igneous And Mineral

Browse igneous and mineral specimens identified by the Rock Identifier community.

Gneiss (Gneiss (High-grade Regional Metamorphic Rock)) — metamorphic

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

metamorphic
Blue Apatite (Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)) — mineral

Blue Apatite

Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)

mineral
Schist (Crystalline Metamorphic Rock (Schistose)) — metamorphic

Schist

Crystalline Metamorphic Rock (Schistose)

metamorphic
Granite (Weathered) (Phaneritic Felsic Igneous Rock) — Igneous

Granite (Weathered)

Phaneritic Felsic Igneous Rock

Igneous
Granite (Phaneritic Igneous Rock (Granite)) — igneous

Granite

Phaneritic Igneous Rock (Granite)

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

Feldspar (Orthoclase)

Potassium Feldspar (KAlSi3O8)

mineral
Citrine (Silicon Dioxide (SiO2)) — mineral

Citrine

Silicon Dioxide (SiO2)

mineral
Eudialyte in Matrix (Na15Ca6Fe3Zr3Si26O72(OH,Cl,H2O)3) — mineral

Eudialyte in Matrix

Na15Ca6Fe3Zr3Si26O72(OH,Cl,H2O)3

mineral
Black Sapphire (Corundum (Al2O3 with inclusions of hematite or ilmenite)) — mineral

Black Sapphire

Corundum (Al2O3 with inclusions of hematite or ilmenite)

mineral
Ferruginous Quartz (Iron-stained Quartz) (Quartz with Iron Oxide inclusions (SiO2 with Fe2O3)) — mineral

Ferruginous Quartz (Iron-stained Quartz)

Quartz with Iron Oxide inclusions (SiO2 with Fe2O3)

mineral
Obsidian (Volcanic Glass (70-75% SiO2)) — igneous

Obsidian

Volcanic Glass (70-75% SiO2)

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

Citrine Quartz

Silicon Dioxide (SiO2)

mineral
Opal (Hydrated Amorphous Silica (SiO2·nH2O)) — Mineral

Opal

Hydrated Amorphous Silica (SiO2·nH2O)

Mineral
Pink Quartz (Rose Quartz variant) (Silicon Dioxide (SiO2)) — mineral

Pink Quartz (Rose Quartz variant)

Silicon Dioxide (SiO2)

mineral
Pink Granite (Felsic Plutonic Rock (primarily Quartz, Potassium Feldspar, and Plagioclase)) — Igneous

Pink Granite

Felsic Plutonic Rock (primarily Quartz, Potassium Feldspar, and Plagioclase)

Igneous
Sugilite (KNa2(Fe,Mn,Al)2Li3Si12O30 (Potassium Sodium Lithium Iron Manganese Aluminum Silicate)) — mineral

Sugilite

KNa2(Fe,Mn,Al)2Li3Si12O30 (Potassium Sodium Lithium Iron Manganese Aluminum Silicate)

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

Sunstone

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

mineral
Basalt (Extrusive mafic igneous rock) — igneous

Basalt

Extrusive mafic igneous rock

igneous
Gneiss (Gneiss (High-grade metamorphic rock)) — metamorphic

Gneiss

Gneiss (High-grade metamorphic rock)

metamorphic
Banded Gneiss (Gneiss (Metamorphic Rock)) — metamorphic

Banded Gneiss

Gneiss (Metamorphic Rock)

metamorphic
Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

metamorphic
Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

mineral
Serpentinite (Serpentinite (composed primarily of Serpentine group minerals, Mg3Si2O5(OH)4)) — metamorphic

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals, Mg3Si2O5(OH)4)

metamorphic
Vesicular Basalt (Amygdaloidal) (Amygdaloidal Basalt (Mafic volcanic rock)) — igneous

Vesicular Basalt (Amygdaloidal)

Amygdaloidal Basalt (Mafic volcanic rock)

igneous
Basalt (with possible mineral veining) (Basalt (Aphanitic Mafic Igneous Rock)) — Igneous

Basalt (with possible mineral veining)

Basalt (Aphanitic Mafic Igneous Rock)

Igneous
Granite (Granite (silica-rich intrusive igneous rock)) — igneous

Granite

Granite (silica-rich intrusive igneous rock)

igneous
Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

mineral
Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

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

Milky Quartz

Silicon Dioxide (SiO2)

mineral
Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

mineral
Optical Calcite (Iceland Spar) (Calcium Carbonate (CaCO3)) — mineral

Optical Calcite (Iceland Spar)

Calcium Carbonate (CaCO3)

mineral
Pyrite (Fools Gold) (Iron Sulfide (FeS2)) — mineral

Pyrite (Fools Gold)

Iron Sulfide (FeS2)

mineral
Peacock Ore (Bornite or Chalcopyrite treated with acid) (Bornite (Cu5FeS4) or Acid-washed Chalcopyrite (CuFeS2)) — mineral

Peacock Ore (Bornite or Chalcopyrite treated with acid)

Bornite (Cu5FeS4) or Acid-washed Chalcopyrite (CuFeS2)

mineral
Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)

mineral
Chalcopyrite (Chalcopyrite (CuFeS2)) — mineral

Chalcopyrite

Chalcopyrite (CuFeS2)

mineral
Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

mineral
Aquamarine (Beryllium Aluminum Silicate (Be3Al2Si6O18)) — mineral

Aquamarine

Beryllium Aluminum Silicate (Be3Al2Si6O18)

mineral
Orthoclase Feldspar (Orthoclase (KAlSi3O8)) — mineral

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

mineral
Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

mineral
Peacock Ore (Bornite (Cu5FeS4)) — mineral

Peacock Ore

Bornite (Cu5FeS4)

mineral
Fluorite (often called Rainbow Fluorite or Purple-Green Fluorite) (Calcium Fluoride (CaF2)) — mineral

Fluorite (often called Rainbow Fluorite or Purple-Green Fluorite)

Calcium Fluoride (CaF2)

mineral
Yellow Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz Pebble

Silicon Dioxide (SiO2)

mineral