Rock Identifier

Category

Mineral (Tectosilicate)

Browse mineral (tectosilicate) specimens identified by the Rock Identifier community.

Learn about Mineral (Tectosilicate) in the encyclopedia

Glauconite

Hutcheonite

Halite

Sperrylite

Baddeleyite

Anatase

Brookite

Talc

Euxenite

Eltyubyuite

Buergerite

Dolomite

Limonite (FeO(OH)·nH2O) — mineral

Limonite

FeO(OH)·nH2O

Botryoidal Prehnite (Prehnite (Ca2Al(AlSi3O10)(OH)2)) — mineral

Botryoidal Prehnite

Prehnite (Ca2Al(AlSi3O10)(OH)2)

Red Sandstone (Iron-stained) (Clastic sedimentary rock (primarily Quartz with Iron Oxides)) — sedimentary

Red Sandstone (Iron-stained)

Clastic sedimentary rock (primarily Quartz with Iron Oxides)

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

Turquoise

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

Peacock Ore (Bornite (Cu5FeS4) or iridescent Chalcopyrite (CuFeS2)) — mineral

Peacock Ore

Bornite (Cu5FeS4) or iridescent Chalcopyrite (CuFeS2)

Banded sandstone pebble (Quartz-rich lithic sandstone; exact provenance and composition require testing) — sedimentary

Banded sandstone pebble

Quartz-rich lithic sandstone; exact provenance and composition require testing

Pink Granite (Unakite-bearing or Epidote-bearing Granite) (Plutonic Igneous Rock (Granite)) — igneous

Pink Granite (Unakite-bearing or Epidote-bearing Granite)

Plutonic Igneous Rock (Granite)

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

Gneiss

Gneiss (High-grade metamorphic rock)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Granite (Phaneritic intrusive igneous rock (Quartz, Feldspar, Mica)) — igneous

Granite

Phaneritic intrusive igneous rock (Quartz, Feldspar, Mica)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Diorite (Salt and Pepper Rock) (Diorite) — igneous

Diorite (Salt and Pepper Rock)

Diorite

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Concrete with Aggregate (Artificial Conglomerate (Cement and Aggregate)) — sedimentary

Concrete with Aggregate

Artificial Conglomerate (Cement and Aggregate)

Gneiss (Banded Gneiss) (Gneiss) — metamorphic

Gneiss (Banded Gneiss)

Gneiss

Tumbled agate/chalcedony (Microcrystalline quartz (SiO₂), likely mossy or dendritic agate with iron-oxide inclusions) — mineral

Tumbled agate/chalcedony

Microcrystalline quartz (SiO₂), likely mossy or dendritic agate with iron-oxide inclusions

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Talc Schist / Soapstone (Talc (Mg3Si4O10(OH)2)) — metamorphic

Talc Schist / Soapstone

Talc (Mg3Si4O10(OH)2)

Quartz Druze on Matrix (Silicon Dioxide (SiO2)) — mineral

Quartz Druze on Matrix

Silicon Dioxide (SiO2)

Tiger's Eye (Quartz pseudomorph after crocidolite (SiO2)) — gemstone

Tiger's Eye

Quartz pseudomorph after crocidolite (SiO2)

Sandstone with Quartz/Calcite druse (Arenite with druse (SiO2 or CaCO3)) — sedimentary

Sandstone with Quartz/Calcite druse

Arenite with druse (SiO2 or CaCO3)

Shark Tooth Fossil (Carcharocles megalodon or similar extinct shark tooth) — fossil

Shark Tooth Fossil

Carcharocles megalodon or similar extinct shark tooth

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

Quartz (Druzy)

Silicon Dioxide (SiO2)

Ruby (Raw Corundum) (Corundum (Al2O3) with Chromium traces) — mineral

Ruby (Raw Corundum)

Corundum (Al2O3) with Chromium traces

Vesicular basalt (likely iron-rich volcanic rock) (Basalt; predominantly plagioclase feldspar, pyroxene, and commonly olivine, with iron oxides) — igneous

Vesicular basalt (likely iron-rich volcanic rock)

Basalt; predominantly plagioclase feldspar, pyroxene, and commonly olivine, with iron oxides

Vein-bearing metamorphic rock, likely gneiss or schist (Banded silicate rock; likely quartz–feldspar–mica gneiss with a quartz vein) — metamorphic

Vein-bearing metamorphic rock, likely gneiss or schist

Banded silicate rock; likely quartz–feldspar–mica gneiss with a quartz vein

Jasper Mushroom Carving (Silicon Dioxide (Microcrystalline Quartz, SiO2)) — mineral

Jasper Mushroom Carving

Silicon Dioxide (Microcrystalline Quartz, SiO2)

Mixed rock and mineral specimens (Predominantly quartz-rich rocks, with a possible malachite-bearing specimen; exact identification is uncertain from the image) — mineral

Mixed rock and mineral specimens

Predominantly quartz-rich rocks, with a possible malachite-bearing specimen; exact identification is uncertain from the image

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

Hematite

Iron(III) oxide (Fe2O3)

Hematite (likely Botryoidal or Specularite variant) (Iron(III) oxide (Fe2O3)) — mineral

Hematite (likely Botryoidal or Specularite variant)

Iron(III) oxide (Fe2O3)

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

Hematite

Hematite (Iron(III) oxide, Fe2O3)

Native Copper Nugget (Native Copper (Cu)) — mineral

Native Copper Nugget

Native Copper (Cu)

Geode (Calcite or Quartz) (Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3)) — sedimentary

Geode (Calcite or Quartz)

Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Blue Chalcedony (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2)

Pyrite (Fool's Gold) (Iron Sulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Pegmatite (Pegmatite (felsic intrusive igneous rock)) — igneous

Pegmatite

Pegmatite (felsic intrusive igneous rock)

Banded Sandstone (Beach Pebble) (Quartz Arenite Sandstone) — sedimentary

Banded Sandstone (Beach Pebble)

Quartz Arenite Sandstone

Gneiss (Metamorphic Pebble) (Gneiss (SiO2-rich metamorphic rock)) — metamorphic

Gneiss (Metamorphic Pebble)

Gneiss (SiO2-rich metamorphic rock)

Diorite (Diorite (Phaneritic intermediate plutonic rock)) — igneous

Diorite

Diorite (Phaneritic intermediate plutonic rock)

Diorite (Diorite (Intermediate intrusive igneous rock)) — igneous

Diorite

Diorite (Intermediate intrusive igneous rock)

Gneiss (Gneiss (Metamorphic Rock)) — metamorphic

Gneiss

Gneiss (Metamorphic Rock)