Rock Identifier

Category

Mineral_rock

Browse mineral_rock specimens identified by the Rock Identifier community.

Learn about Mineral_rock in the encyclopedia

Rock Salt

Calc-Silicate Rock

Calc-Silicate Rock

Halite

Dolomite

Gypsum

Coal

Claystone

Carbonatite

Serpentinite

Skarn

Schist

Shale

Fossil shark tooth, likely sand tiger shark (Fossilized selachian tooth; possibly *Carcharias* or *Striatolamia*) — fossil

Fossil shark tooth, likely sand tiger shark

Fossilized selachian tooth; possibly *Carcharias* or *Striatolamia*

Gemstone Ring (Various (Likely Glass, Cubic Zirconia, or assorted semi-precious stones)) — gemstone

Gemstone Ring

Various (Likely Glass, Cubic Zirconia, or assorted semi-precious stones)

Granite pebble (Granite; predominantly quartz, feldspar, and mica) — igneous

Granite pebble

Granite; predominantly quartz, feldspar, and mica

Tumbled jasper (Jasper, an opaque microcrystalline variety of quartz (SiO₂), commonly chalcedony with iron-oxide impurities) — mineral

Tumbled jasper

Jasper, an opaque microcrystalline variety of quartz (SiO₂), commonly chalcedony with iron-oxide impurities

Limonite (FeO(OH)·n(H2O)) — mineral

Limonite

FeO(OH)·n(H2O)

Greenstone (Metabasalt / Chlorite Schist) — metamorphic

Greenstone

Metabasalt / Chlorite Schist

Limonite/Ironstone (Limonite (FeO(OH)·nH2O)) — mineral

Limonite/Ironstone

Limonite (FeO(OH)·nH2O)

Limonite / Goethite (Ironstone Nodule) (Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)) — mineral

Limonite / Goethite (Ironstone Nodule)

Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)

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

Quartz with Inclusions

Silicon Dioxide (SiO2)

Limonite with Quartz (Hydrated Iron Oxide Hydroxide, FeO(OH)·nH₂O with SiO₂) — mineral

Limonite with Quartz

Hydrated Iron Oxide Hydroxide, FeO(OH)·nH₂O with SiO₂

Limonite (Iron Ore) (FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide)) — mineral

Limonite (Iron Ore)

FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide)

Limonite with Quartz (Hydrated Iron Oxide Hydroxide with Silicon Dioxide (FeO(OH)·nH2O + SiO2)) — mineral

Limonite with Quartz

Hydrated Iron Oxide Hydroxide with Silicon Dioxide (FeO(OH)·nH2O + SiO2)

Gneiss (Metamorphic Gneiss (High-grade regional metamorphism)) — metamorphic

Gneiss

Metamorphic Gneiss (High-grade regional metamorphism)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Gneiss with Quartz Veining (Gneiss (High-grade metamorphic rock)) — metamorphic

Gneiss with Quartz Veining

Gneiss (High-grade metamorphic rock)

Sandstone (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone

Arenite (composed primarily of SiO2)

Limonite Boxwork / Iron Ore Concretion (FeO(OH)qnH2O (Hydrated iron oxide)) — sedimentary

Limonite Boxwork / Iron Ore Concretion

FeO(OH)qnH2O (Hydrated iron oxide)

Hematite (Botryoidal / Kidney Ore) (Iron Oxide (Fe2O3)) — mineral

Hematite (Botryoidal / Kidney Ore)

Iron Oxide (Fe2O3)

Dalmatian Stone (Dalmatian Jasper (a misnomer for an Aplite with Arfvedsonite spots)) — igneous

Dalmatian Stone

Dalmatian Jasper (a misnomer for an Aplite with Arfvedsonite spots)

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

Green Fluorite

Fluorite (Calcium Fluoride, CaF2)

Banded Metamorphic Rock (Gneiss or Schist) — metamorphic

Banded Metamorphic Rock

Gneiss or Schist

Iron Ore (Magnetite-Hematite) (Magnetite (Fe3O4) and Hematite (Fe2O3)) — mineral

Iron Ore (Magnetite-Hematite)

Magnetite (Fe3O4) and Hematite (Fe2O3)

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

Hematite

Iron(III) oxide (Fe2O3)

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

Chrysocolla

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

Gold-bearing Quartz with Iron Oxides (Quartz (SiO2) with Limonite/Goethite (FeO(OH)) and Pyrite (FeS2)) — mineral

Gold-bearing Quartz with Iron Oxides

Quartz (SiO2) with Limonite/Goethite (FeO(OH)) and Pyrite (FeS2)

Red Sandstone (Arenite (Fe2O3 enriched)) — sedimentary

Red Sandstone

Arenite (Fe2O3 enriched)

Sandstone (Arenite (SiO2 based typically)) — sedimentary

Sandstone

Arenite (SiO2 based typically)

Turquoise (CuAl6(PO4)4(OH)8·4H2O) — mineral

Turquoise

CuAl6(PO4)4(OH)8·4H2O

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

Turquoise

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

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

Turquoise in Matrix

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

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

Turquoise

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

Quartz with Mica (Silicon Dioxide (SiO2) with Mica group inclusions) — mineral

Quartz with Mica

Silicon Dioxide (SiO2) with Mica group inclusions

Tumbled milky quartz pebble (Quartz (SiO₂), likely massive milky quartz) — mineral

Tumbled milky quartz pebble

Quartz (SiO₂), likely massive milky quartz

Milky quartz (Quartz (SiO₂), likely massive milky quartz) — mineral

Milky quartz

Quartz (SiO₂), likely massive milky quartz

Quartz-rich hydrothermal vein rock, possibly quartzite (Mostly SiO₂ (quartz), with probable iron oxides and minor sulfides) — metamorphic

Quartz-rich hydrothermal vein rock, possibly quartzite

Mostly SiO₂ (quartz), with probable iron oxides and minor sulfides

Bauxite (Bauxite (Aluminum Ore)) — sedimentary

Bauxite

Bauxite (Aluminum Ore)

Calcite–fluorite mineral specimen with iron-oxide staining (Calcite (CaCO₃), likely fluorite (CaF₂), with possible quartz and iron/manganese oxides) — mineral

Calcite–fluorite mineral specimen with iron-oxide staining

Calcite (CaCO₃), likely fluorite (CaF₂), with possible quartz and iron/manganese oxides

Polished orbicular jasper (likely ocean jasper) (Silicified volcanic rock; microcrystalline quartz/chalcedony (SiO₂) with iron oxides and altered volcanic minerals) — metamorphic

Polished orbicular jasper (likely ocean jasper)

Silicified volcanic rock; microcrystalline quartz/chalcedony (SiO₂) with iron oxides and altered volcanic minerals

Lapis Lazuli (Lapis Lazuli (Mineral composition: Lazurite, Calcite, Sodalite, and Pyrite)) — metamorphic

Lapis Lazuli

Lapis Lazuli (Mineral composition: Lazurite, Calcite, Sodalite, and Pyrite)

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

Fluorite

Fluorite (Calcium Fluoride, CaF2)

Milky quartz (Quartz (silicon dioxide, SiO₂)) — mineral

Milky quartz

Quartz (silicon dioxide, SiO₂)

Weathered schist (Mica schist, likely chlorite–biotite schist) — metamorphic

Weathered schist

Mica schist, likely chlorite–biotite schist