Rock Identifier

Category

Mineral, Sediment

Browse mineral, sediment specimens identified by the Rock Identifier community.

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

Quartz (Smoky Quartz variant)

Silicon Dioxide (SiO2)

Amethyst (Quartz variety) (Silicon Dioxide (SiO2) with iron impurities) — mineral

Amethyst (Quartz variety)

Silicon Dioxide (SiO2) with iron impurities

Zoisite with Ruby / Anyolite (Anyolite (Ca2Al3(SiO4)3(OH) with Chromian Zoisite and Tschermakite inclusions)) — metamorphic

Zoisite with Ruby / Anyolite

Anyolite (Ca2Al3(SiO4)3(OH) with Chromian Zoisite and Tschermakite inclusions)

Chalcedony with Druzy Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Chalcedony with Druzy Quartz Geode

Silicon Dioxide (SiO2)

Sandstone (Arenite (SiO2 based with mineral cement)) — sedimentary

Sandstone

Arenite (SiO2 based with mineral cement)

Pyrite and Fluorite on Quartz (Matrix Specimen) (Iron Disulfide (FeS2) and Calcium Fluoride (CaF2) with Silicon Dioxide (SiO2)) — mineral

Pyrite and Fluorite on Quartz (Matrix Specimen)

Iron Disulfide (FeS2) and Calcium Fluoride (CaF2) with Silicon Dioxide (SiO2)

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

Granite Pebble

Granite (Phaneritic intrusive igneous rock comprising Quartz, Feldspar, and Mica)

Pegmatite (Coarse-grained Igneous Rock (Granitic Pegmatite)) — igneous

Pegmatite

Coarse-grained Igneous Rock (Granitic Pegmatite)

Quartz Geode Fragment (Silicon Dioxide (SiO2)) — mineral

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Quartz (Fieldstone/Pebble) (Silicon Dioxide (SiO2)) — mineral

Quartz (Fieldstone/Pebble)

Silicon Dioxide (SiO2)

Indigo Gabbro (Gabbro (MaFIC intrusive rock)) — igneous

Indigo Gabbro

Gabbro (MaFIC intrusive rock)

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

Blue Lepidolite

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

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

Quartz (River Pebble)

Silicon Dioxide (SiO2)

Diamond in Kimberlite (Kimberlite Matrix with Carbon (Diamond)) — igneous

Diamond in Kimberlite

Kimberlite Matrix with Carbon (Diamond)

Granite (Granite) — Igneous

Granite

Granite

Rock Salt (Halite) (Halite (Sodium Chloride, NaCl)) — mineral

Rock Salt (Halite)

Halite (Sodium Chloride, NaCl)

Charoite (Charoite (K(Ca,Na)2Si4O10(OH,F)·nH2O)) — metamorphic

Charoite

Charoite (K(Ca,Na)2Si4O10(OH,F)·nH2O)

Quartz (Common or Milky) (Silicon Dioxide (SiO2)) — mineral

Quartz (Common or Milky)

Silicon Dioxide (SiO2)

Quartz Veinated Sandstone or Siltstone (Silicon Dioxide (SiO2) within a clastic sedimentary matrix) — sedimentary

Quartz Veinated Sandstone or Siltstone

Silicon Dioxide (SiO2) within a clastic sedimentary matrix

Quartz Pebble (Silicon Dioxide (SiO2)) — Mineral / Sedimentary occurrence

Quartz Pebble

Silicon Dioxide (SiO2)

Mineral / Sedimentary occurrence

Orthoclase Feldspar (Salmon variety) (Orthoclase, KAlSi3O8) — mineral

Orthoclase Feldspar (Salmon variety)

Orthoclase, KAlSi3O8

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz (Microcrystalline/Macro crystalline variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Microcrystalline/Macro crystalline variety)

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Orthoclase Feldspar (KAlSi3O8 (Potassium aluminum silicate)) — mineral

Orthoclase Feldspar

KAlSi3O8 (Potassium aluminum silicate)

Quartz (specifically Quartzite or Massive Quartz) (Silicon Dioxide (SiO2)) — Mineral

Quartz (specifically Quartzite or Massive Quartz)

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

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

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Blue Apatite (Fluorapatite (Ca5(PO4)3F)) — mineral

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Quartz with Limonite Staining (Silicon Dioxide (SiO2) with Hydrated Iron Oxide (FeO(OH)·nH2O)) — Mineral

Quartz with Limonite Staining

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

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

Quartz (Milky or Smoky Quartz)

Silicon Dioxide (SiO2)

Quartz Pebble (Sea Glass-like Quartz) (Quartz (Silicon Dioxide - SiO2)) — mineral

Quartz Pebble (Sea Glass-like Quartz)

Quartz (Silicon Dioxide - SiO2)

Unakite (Unakite (Metasomatized Granite)) — metamorphic

Unakite

Unakite (Metasomatized Granite)

Lapis Lazuli (Complex mixture of minerals (lazurite, calcite, pyrite, and sodalite); (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2) — metamorphic

Lapis Lazuli

Complex mixture of minerals (lazurite, calcite, pyrite, and sodalite); (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

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)

Jasper containing epidote (Unakite-like) (Epidotized Jasper (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH))) — metamorphic

Jasper containing epidote (Unakite-like)

Epidotized Jasper (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH))

Garden Quartz (Phantom Quartz) (Silicon Dioxide (SiO2) with various inclusions (often Chlorite, Hematite, or Iron)) — mineral

Garden Quartz (Phantom Quartz)

Silicon Dioxide (SiO2) with various inclusions (often Chlorite, Hematite, or Iron)

Red Sandstone (Arenite (with Iron Oxide / Hematite staining)) — sedimentary

Red Sandstone

Arenite (with Iron Oxide / Hematite staining)

Lepidolite (K(Li,Al)3(Al,Si)4O10(F,OH)2 (Lithium-bearing phyllosilicate)) — mineral

Lepidolite

K(Li,Al)3(Al,Si)4O10(F,OH)2 (Lithium-bearing phyllosilicate)

Sandstone (Ferruginous) (Arenite with Iron-Oxide Cement (primarily SiO2 with Fe2O3/FeOOH)) — sedimentary

Sandstone (Ferruginous)

Arenite with Iron-Oxide Cement (primarily SiO2 with Fe2O3/FeOOH)