Rock Identifier

Category

Mineral (Tectosilicate)

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

Magnetite (Iron Ore) (Magnetite (Fe3O4)) — mineral

Magnetite (Iron Ore)

Magnetite (Fe3O4)

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

Gneiss

Gneiss (High-grade regional metamorphic rock)

metamorphic
Limonite (Iron Ore) (Limonite (FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

mineral
Epidote in Granite Gneiss (Epidote bearing Orthogneiss (Ca2(Al,Fe)3(SiO4)3(OH))) — metamorphic

Epidote in Granite Gneiss

Epidote bearing Orthogneiss (Ca2(Al,Fe)3(SiO4)3(OH))

metamorphic
Mica Schist (Crystalline Schist (often primarily Muscovite or Biotite sheet silicates)) — metamorphic

Mica Schist

Crystalline Schist (often primarily Muscovite or Biotite sheet silicates)

metamorphic
Septarian Nodule (Septarian Nodule (Mixture of Calcite, Aragonite, and Limestone/Clay)) — sedimentary

Septarian Nodule

Septarian Nodule (Mixture of Calcite, Aragonite, and Limestone/Clay)

sedimentary
Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

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

Orange Calcite

Calcium Carbonate (CaCO3)

mineral
Asphalt Concrete (Bituminous conglomerate) — sedimentary

Asphalt Concrete

Bituminous conglomerate

sedimentary
Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

mineral
Sodalite (Sodalite (Na8(Al6Si6O24)Cl2)) — mineral

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

mineral
Bornite (Peacock Ore) (Bornite (Cu5FeS4)) — mineral

Bornite (Peacock Ore)

Bornite (Cu5FeS4)

mineral
Blue Aventurine (Silicon Dioxide (SiO2) containing Dumortierite or Crocidolite inclusions) — mineral

Blue Aventurine

Silicon Dioxide (SiO2) containing Dumortierite or Crocidolite inclusions

mineral
Sandstone (with potential fossil inclusions) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (with potential fossil inclusions)

Clastic sedimentary rock (primarily SiO2)

sedimentary
Tiger's Eye (dark/grey variant) (Pseudomorph of Quartz after Crocidolite (SiO2)) — mineral

Tiger's Eye (dark/grey variant)

Pseudomorph of Quartz after Crocidolite (SiO2)

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

Sandstone

Arenite (composed primarily of SiO2)

sedimentary
Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

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

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

mineral
Satin Spar (Gypsum variety) (Calcium Sulfate Dihydrate (CaSO4·2H2O)) — mineral

Satin Spar (Gypsum variety)

Calcium Sulfate Dihydrate (CaSO4·2H2O)

mineral
Black Obsidian and Hematite (Volcanic Glass (SiO2) and Hematite (Fe2O3)) — igneous and mineral

Black Obsidian and Hematite

Volcanic Glass (SiO2) and Hematite (Fe2O3)

igneous and mineral
Obsidian (Volcanic glass) — igneous

Obsidian

Volcanic glass

igneous
Green Calcite (Calcium Carbonate (CaCO3)) — mineral

Green Calcite

Calcium Carbonate (CaCO3)

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

Orange Calcite

Calcite (Calcium Carbonate, CaCO3)

mineral
Fossilized Bivalve Shell (Bivalvia (fossil specimen)) — sedimentary

Fossilized Bivalve Shell

Bivalvia (fossil specimen)

sedimentary
Agate (Silicon dioxide (SiO2) - variety Chalcedony) — mineral

Agate

Silicon dioxide (SiO2) - variety Chalcedony

mineral
Schorl (Black Tourmaline) in Matrix (Sodium Iron Aluminum Borosilicate Hydroxide (NaFe2+3Al6Si6O18(BO3)3(OH)3OH)) — mineral

Schorl (Black Tourmaline) in Matrix

Sodium Iron Aluminum Borosilicate Hydroxide (NaFe2+3Al6Si6O18(BO3)3(OH)3OH)

mineral
Banded Agate (Silicon Dioxide (SiO2)) — mineral

Banded Agate

Silicon Dioxide (SiO2)

mineral
Unakite (Epidotized Granite) — metamorphic

Unakite

Epidotized Granite

metamorphic
Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

sedimentary
Pyrulite (Pyrite / Chalcopyrite) (Iron Sulfide (FeS2) or Copper Iron Sulfide (CuFeS2)) — mineral

Pyrulite (Pyrite / Chalcopyrite)

Iron Sulfide (FeS2) or Copper Iron Sulfide (CuFeS2)

mineral
Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

mineral
Gypsum Wallboard (Drywall) (Hydrous calcium sulfate (CaSO4·2H2O)) — sedimentary (processed mineral product)

Gypsum Wallboard (Drywall)

Hydrous calcium sulfate (CaSO4·2H2O)

sedimentary (processed mineral product)
Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

sedimentary
Tiger's Eye (Silicon Dioxide (SiO2)) — Mineral

Tiger's Eye

Silicon Dioxide (SiO2)

Mineral
Rose Quartz (Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

mineral
Sandstone (Arenite) — sedimentary

Sandstone

Arenite

sedimentary
Sandstone (Arenite) — sedimentary

Sandstone

Arenite

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

Orange Calcite

Calcium Carbonate (CaCO3)

mineral
Sandstone (Fossiliferous) (Clastic Sedimentary Rock (primarily SiO2)) — sedimentary

Sandstone (Fossiliferous)

Clastic Sedimentary Rock (primarily SiO2)

sedimentary
Rose Quartz (Silicon dioxide (SiO2)) — mineral

Rose Quartz

Silicon dioxide (SiO2)

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

Sandstone

Arenite (composed primarily of SiO2)

sedimentary
Sandstone (Arenite) — sedimentary

Sandstone

Arenite

sedimentary