Rock Identifier

Category

Mineral (Native Element Alloy)

Browse mineral (native element alloy) specimens identified by the Rock Identifier community.

Turquoise (Turquoise (Hydrated phosphate of copper and aluminium) CuAl6(PO4)4(OH)8·4H2O) — mineral

Turquoise

Turquoise (Hydrated phosphate of copper and aluminium) CuAl6(PO4)4(OH)8·4H2O

mineral
Chalcopyrite (Chalcopyrite (CuFeS2)) — mineral

Chalcopyrite

Chalcopyrite (CuFeS2)

mineral
Conglomerate (Conglomerate) — Sedimentary Rock

Conglomerate

Conglomerate

Sedimentary Rock
Corundum (Corundum (Al2O3)) — Mineral

Corundum

Corundum (Al2O3)

Mineral
Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions of Iron Oxide)) — mineral

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions of Iron Oxide)

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

Hematite

Iron(III) oxide (Fe2O3)

mineral
Dalmatian Stone (Peralkaline rhyolite) — igneous

Dalmatian Stone

Peralkaline rhyolite

igneous
Hematite (beads) (Hematite (Fe₂O₃)) — Mineral

Hematite (beads)

Hematite (Fe₂O₃)

Mineral
Quartzite with vugs/druzy quartz (Crystalline Silicon Dioxide (SiO2)) — metamorphic

Quartzite with vugs/druzy quartz

Crystalline Silicon Dioxide (SiO2)

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

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

Smoky Quartz

Silicon Dioxide (SiO2)

mineral
Lapis Lazuli (polished cabochon) (Lazurite-rich metamorphic rock (approx. Na6Ca2Al6Si6O24(SO4,S,Cl)2)) — metamorphic

Lapis Lazuli (polished cabochon)

Lazurite-rich metamorphic rock (approx. Na6Ca2Al6Si6O24(SO4,S,Cl)2)

metamorphic
Blue Apatite (Fluoroapatite (Ca5(PO4)3F)) — mineral

Blue Apatite

Fluoroapatite (Ca5(PO4)3F)

mineral
Tiger's Eye (with Blue Tiger's Eye / Hawk's Eye) (Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)) — metamorphic

Tiger's Eye (with Blue Tiger's Eye / Hawk's Eye)

Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)

metamorphic
Limonite (Iron Ore) (Limonite (Hydrous iron(III) oxide-hydroxide mixture, primarily FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore)

Limonite (Hydrous iron(III) oxide-hydroxide mixture, primarily FeO(OH)·nH2O)

mineral
Bauxite (Bauxite (Al2O3·2H2O)) — sedimentary

Bauxite

Bauxite (Al2O3·2H2O)

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

Lepidolite

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

mineral
Quartz Vein in Host Rock (Silicon Dioxide (SiO2) within a metamorphic matrix) — metamorphic

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) within a metamorphic matrix

metamorphic
Sodalite (Sodium aluminum silicate chloride (Na8(Al6Si6O24)Cl2)) — mineral

Sodalite

Sodium aluminum silicate chloride (Na8(Al6Si6O24)Cl2)

mineral
Slate with Quartz Vein (Foliated Metamorphic Rock (Mainly Quartz, Muscovite, Chlorite)) — metamorphic

Slate with Quartz Vein

Foliated Metamorphic Rock (Mainly Quartz, Muscovite, Chlorite)

metamorphic
Bauxite (Bauxite (Mixture of Al(OH)3, AlO(OH), and Fe2O3)) — sedimentary

Bauxite

Bauxite (Mixture of Al(OH)3, AlO(OH), and Fe2O3)

sedimentary
Quartz (Iron-stained) (Silicon Dioxide (SiO2)) — mineral

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

mineral
Fluorite (Green) (Calcium Fluoride (CaF2)) — mineral

Fluorite (Green)

Calcium Fluoride (CaF2)

mineral
Ruby in Kyanite (Corundum in Disthene (Al2SiO5 + Al2O3)) — metamorphic

Ruby in Kyanite

Corundum in Disthene (Al2SiO5 + Al2O3)

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

Quartz Pebble

Silicon Dioxide (SiO2)

mineral
Yellow Ochre / Limonite (Limonite (FeO(OH)·nH2O)) — Mineral

Yellow Ochre / Limonite

Limonite (FeO(OH)·nH2O)

Mineral
Quartz pebble (Silicon Dioxide (SiO2)) — mineral

Quartz pebble

Silicon Dioxide (SiO2)

mineral
Limonite (Ironstone Concretion) (Limonite (Hydrated iron(III) oxide-hydroxide, mixtures of FeO(OH)·nH2O)) — sedimentary

Limonite (Ironstone Concretion)

Limonite (Hydrated iron(III) oxide-hydroxide, mixtures of FeO(OH)·nH2O)

sedimentary
Quartz Pebble (Quartz (Silicon Dioxide, SiO2)) — mineral

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

mineral
Basalt-Amugydule (Amygdaloidal Basalt) (Aphanitic Mafic Igneous Rock with Vesicle Infillings) — igneous

Basalt-Amugydule (Amygdaloidal Basalt)

Aphanitic Mafic Igneous Rock with Vesicle Infillings

igneous
Biotite Mica (K(Mg,Fe2+)3(Al,Fe3+)Si3O10(OH,F)2) — Mineral

Biotite Mica

K(Mg,Fe2+)3(Al,Fe3+)Si3O10(OH,F)2

Mineral
Basalt with Quartz Vein (Basalt (SiO2 vein inclusion)) — igneous

Basalt with Quartz Vein

Basalt (SiO2 vein inclusion)

igneous
Rose Quartz (Quartz (SiO2) with trace impurities causing pink color) — Mineral

Rose Quartz

Quartz (SiO2) with trace impurities causing pink color

Mineral
Green Fluorite (Calcium Fluoride (CaF2)) — mineral

Green Fluorite

Calcium Fluoride (CaF2)

mineral
Nephrite Jade (or Serpentine) (Nephrite (a variety of amphibole mineral tremolite-actinolite) or Serpentine Group minerals) — Mineral/Rock

Nephrite Jade (or Serpentine)

Nephrite (a variety of amphibole mineral tremolite-actinolite) or Serpentine Group minerals

Mineral/Rock
Greenschist (Chlorite schist) — metamorphic

Greenschist

Chlorite schist

metamorphic
Geode (Unopened) (Silica-rich Concretion (primarily SiO2)) — sedimentary

Geode (Unopened)

Silica-rich Concretion (primarily SiO2)

sedimentary
Geode (Unopened) (Silicon Dioxide (SiO2) in sedimentary vugs) — sedimentary

Geode (Unopened)

Silicon Dioxide (SiO2) in sedimentary vugs

sedimentary
Quartzite (Quartzite (Primary mineral: SiO2)) — metamorphic

Quartzite

Quartzite (Primary mineral: SiO2)

metamorphic
Quartzite (Quartzite (Primary mineral: SiO2)) — metamorphic

Quartzite

Quartzite (Primary mineral: SiO2)

metamorphic
Quartzite (Quartzite (Primary mineral: SiO2)) — metamorphic

Quartzite

Quartzite (Primary mineral: SiO2)

metamorphic
Quartzite (Quartzite (Primary mineral: SiO2)) — metamorphic

Quartzite

Quartzite (Primary mineral: SiO2)

metamorphic