Rock Identifier

Category

Mineral (Tectosilicate)

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

Learn about Mineral (Tectosilicate) in the encyclopedia

Glauconite

Glauconite

Halite

Halite

Hutcheonite

Hutcheonite

Sperrylite

Sperrylite

Baddeleyite

Baddeleyite

Anatase

Anatase

Brookite

Brookite

Talc

Talc

Euxenite

Euxenite

Eltyubyuite

Eltyubyuite

Dolomite

Dolomite

Buergerite

Buergerite

Magnetite (Magnetite (Fe3O4)) — mineral

Magnetite

Magnetite (Fe3O4)

Quartz with Hematite Staining (Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3) inclusions) — mineral

Quartz with Hematite Staining

Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3) inclusions

Gold Quartz (Auriferous Quartz) (Silicon Dioxide (SiO2) with trace Gold (Au) and Iron Oxides) — mineral

Gold Quartz (Auriferous Quartz)

Silicon Dioxide (SiO2) with trace Gold (Au) and Iron Oxides

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

Milky Quartz Pebble

Quartz (Silicon Dioxide - SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

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

Lepidolite

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

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

Diamond (Diamond (C)) — mineral

Diamond

Diamond (C)

Bismuth (Native Bismuth (Bi)) — mineral

Bismuth

Native Bismuth (Bi)

Dyed Agate (Chalcedony (SiO2)) — mineral

Dyed Agate

Chalcedony (SiO2)

Dyed Howlite (often sold as 'Turquenite') (Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)) — mineral

Dyed Howlite (often sold as 'Turquenite')

Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)

Diamond (Diamond (pure Carbon, C)) — mineral

Diamond

Diamond (pure Carbon, C)

Diamond (Carbon (C) - Native Element) — mineral

Diamond

Carbon (C) - Native Element

Schist (Schist (variety likely Mica Schist)) — metamorphic

Schist

Schist (variety likely Mica Schist)

Moss Agate (Silicon Dioxide (SiO2) with mineral inclusions of hornblende or chlorite) — Mineral (variety of Chalcedony)

Moss Agate

Silicon Dioxide (SiO2) with mineral inclusions of hornblende or chlorite

Mineral (variety of Chalcedony)

Amygdaloidal Basalt (Amygdaloidal Basalt (Mafic Volcanic Rock)) — igneous

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic Volcanic Rock)

Greenschist (Greenstone River Pebble) (Greenschist (Chlorite Schist)) — metamorphic

Greenschist (Greenstone River Pebble)

Greenschist (Chlorite Schist)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Red Sandstone (Arenite (ferruginous sandstone)) — sedimentary

Red Sandstone

Arenite (ferruginous sandstone)

Petrified Wood (Silicified Wood (primarily Quartz / Chalcedony: SiO2)) — sedimentary

Petrified Wood

Silicified Wood (primarily Quartz / Chalcedony: SiO2)

Barite (Barium Sulfate (BaSO4)) — mineral

Barite

Barium Sulfate (BaSO4)

Granite (Phaneritic plutonic rock (SiO2-rich)) — igneous

Granite

Phaneritic plutonic rock (SiO2-rich)

Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

Diamond (Martapura/Borneo Diamond) (Carbon (C) - Diamond) — mineral

Diamond (Martapura/Borneo Diamond)

Carbon (C) - Diamond

Diamond (in a jewelry setting) (Carbon (C)) — mineral

Diamond (in a jewelry setting)

Carbon (C)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Ironstone with Pyrite (Ferruginous Sandstone (Fe2O3) with minor Sulfide minerals (FeS2)) — sedimentary

Ironstone with Pyrite

Ferruginous Sandstone (Fe2O3) with minor Sulfide minerals (FeS2)

Serpentine (Serpentinite (rock) containing serpentine minerals (e.g., Antigorite, Lizardite, Chrysotile)) — Metamorphic rock

Serpentine

Serpentinite (rock) containing serpentine minerals (e.g., Antigorite, Lizardite, Chrysotile)

Metamorphic rock

Limonite/Goethite nodule (Goethite (FeO(OH)) with Hydrated Iron Oxides) — mineral

Limonite/Goethite nodule

Goethite (FeO(OH)) with Hydrated Iron Oxides

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Granitic Pegmatite (Coarse-grained Igneous Rock (Granitic composition: KAlSi3O8, SiO2)) — igneous

Granitic Pegmatite

Coarse-grained Igneous Rock (Granitic composition: KAlSi3O8, SiO2)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Snowflake Obsidian (Spherulitic Volcanic Glass (primarily SiO2)) — igneous

Snowflake Obsidian

Spherulitic Volcanic Glass (primarily SiO2)

Concretion (Various mineral compositions, typically carbonate or iron oxide cemented sediment) — Sedimentary

Concretion

Various mineral compositions, typically carbonate or iron oxide cemented sediment

Porphyritic Basalt (Porphyritic Basalt with Olivine phenocrysts) — igneous

Porphyritic Basalt

Porphyritic Basalt with Olivine phenocrysts

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Gneiss with Quartz Veining (Gneiss (High-grade Regional Metamorphic Rock)) — metamorphic

Gneiss with Quartz Veining

Gneiss (High-grade Regional Metamorphic Rock)

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

Banded Gneiss

Gneiss (High-grade Metamorphic Rock)

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

Diorite (Salt and Pepper Rock)

Diorite

Granite Pebble (Intrusive Felsic Igneous Rock (Granite)) — igneous

Granite Pebble

Intrusive Felsic Igneous Rock (Granite)

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

Gneiss

High-grade metamorphic rock (Gneiss)