Rock Identifier

Category

Mineral (Found In Igneous And Metamorphic Rocks)

Browse mineral (found in igneous and metamorphic rocks) specimens identified by the Rock Identifier community.

Learn about Mineral (Found In Igneous And Metamorphic Rocks) in the encyclopedia

Carbonatite

Metabasalt

Cordierite Hornfels

Cordierite Hornfels

Eltyubyuite

Paracelsian

Kokchetavite

Migmatite

Hornblende Schist

Hornblende Schist

Metagabbro

Calc-Silicate Rock

Calc-Silicate Rock

Celsian

Banalsite

Tumbled milky quartz (Quartz (silicon dioxide, SiO₂)) — mineral

Tumbled milky quartz

Quartz (silicon dioxide, SiO₂)

Small quartz fragment (probable) (Quartz, SiO₂) — mineral

Small quartz fragment (probable)

Quartz, SiO₂

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Moonstone (Adularia (orthoclase) or Albite (plagioclase), a potassium aluminum silicate of the feldspar group) — Mineral

Moonstone

Adularia (orthoclase) or Albite (plagioclase), a potassium aluminum silicate of the feldspar group

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Probable magnetite-bearing rock (Magnetite (Fe₃O₄), possibly in a fine-grained host rock) — mineral

Probable magnetite-bearing rock

Magnetite (Fe₃O₄), possibly in a fine-grained host rock

Amethyst (Silicon Dioxide (SiO2) containing iron impurities) — mineral

Amethyst

Silicon Dioxide (SiO2) containing iron impurities

Smoky quartz crystal (Quartz, silicon dioxide (SiO₂), smoky variety) — mineral

Smoky quartz crystal

Quartz, silicon dioxide (SiO₂), smoky variety

Biotite Schist (Biotite Gneissic Schist (K(Mg,Fe)3AlSi3O10(OH)2)) — metamorphic

Biotite Schist

Biotite Gneissic Schist (K(Mg,Fe)3AlSi3O10(OH)2)

Yellow Quartz (Citrine Quartzite) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine Quartzite)

Silicon Dioxide (SiO2)

Magnetite (Magnetite (Fe3O4)) — Mineral

Magnetite

Magnetite (Fe3O4)

Likely magnetite (small rough crystal) (Magnetite, Fe₃O₄) — mineral

Likely magnetite (small rough crystal)

Magnetite, Fe₃O₄

Graphite (Graphite (Carbon, C)) — mineral

Graphite

Graphite (Carbon, C)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

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

Yellow Quartz Pebble

Silicon Dioxide (SiO2)

Quartz (specifically Citrine or Iron-stained Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (specifically Citrine or Iron-stained Quartz)

Silicon Dioxide (SiO2)

Milky Quartz with Iron Staining (Silicon Dioxide (SiO2) with Hematite/Limonite) — mineral

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2) with Hematite/Limonite

Likely quartz-rich rock fragment (Quartz (SiO₂), possibly iron-stained or included in a mixed rock; exact identification is uncertain from the image) — mineral

Likely quartz-rich rock fragment

Quartz (SiO₂), possibly iron-stained or included in a mixed rock; exact identification is uncertain from the image

Blue apatite crystals (Apatite group, commonly fluorapatite (Ca₅(PO₄)₃F)) — mineral

Blue apatite crystals

Apatite group, commonly fluorapatite (Ca₅(PO₄)₃F)

Likely milky quartz (Quartz (silicon dioxide, SiO₂)) — mineral

Likely milky quartz

Quartz (silicon dioxide, SiO₂)

White quartz pebble (likely milky quartz) (Quartz, SiO₂; identification from the photo is provisional) — mineral

White quartz pebble (likely milky quartz)

Quartz, SiO₂; identification from the photo is provisional

Milky quartz (rough quartz-rich rock) (Quartz, silicon dioxide (SiO₂); likely massive milky quartz, possibly quartzite) — mineral

Milky quartz (rough quartz-rich rock)

Quartz, silicon dioxide (SiO₂); likely massive milky quartz, possibly quartzite

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

Milky quartz

Quartz (silicon dioxide, SiO₂)

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

Milky quartz

Quartz (silicon dioxide, SiO₂)

Citrine (Citrine (Silicon Dioxide, SiO2)) — mineral

Citrine

Citrine (Silicon Dioxide, SiO2)

Tumbled milky quartz (Quartz (silicon dioxide, SiO₂)) — mineral

Tumbled milky quartz

Quartz (silicon dioxide, SiO₂)

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

Milky quartz crystal cluster

Quartz (silicon dioxide, SiO₂)

Tumbled milky quartz pebble (Quartz (silicon dioxide, SiO₂), cryptocrystalline to microcrystalline variety) — mineral

Tumbled milky quartz pebble

Quartz (silicon dioxide, SiO₂), cryptocrystalline to microcrystalline variety

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

Milky quartz

Quartz (silicon dioxide, SiO₂)

Blue Calcite (Calcium Carbonate (CaCO3)) — mineral

Blue Calcite

Calcium Carbonate (CaCO3)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Quartz / Iron-Stained Quartz (Silicon Dioxide (SiO2) with iron oxide inclusions/staining) — mineral

Quartz / Iron-Stained Quartz

Silicon Dioxide (SiO2) with iron oxide inclusions/staining

Biotite Schist (Biotite Mica Schist [K(Mg,Fe)3AlSi3O10(OH,F)2]) — metamorphic

Biotite Schist

Biotite Mica Schist [K(Mg,Fe)3AlSi3O10(OH,F)2]

Tumbled milky quartz pebble (Quartz (SiO₂), cryptocrystalline to coarse microcrystalline variety) — mineral

Tumbled milky quartz pebble

Quartz (SiO₂), cryptocrystalline to coarse microcrystalline variety

Rounded, weathered quartz-rich pebble (likely milky quartz) (Quartz, SiO₂; exact identification is uncertain from the photograph) — mineral

Rounded, weathered quartz-rich pebble (likely milky quartz)

Quartz, SiO₂; exact identification is uncertain from the photograph

Sapphire (Corundum (Al2O3)) — mineral

Sapphire

Corundum (Al2O3)

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)

Quartz crystal (Quartz (silicon dioxide, SiO₂), likely a natural or lightly damaged crystal) — mineral

Quartz crystal

Quartz (silicon dioxide, SiO₂), likely a natural or lightly damaged crystal

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

Smoky Quartz

Smoky Quartz (Silicon Dioxide - SiO2)

Tumbled and polished quartz crystal points (Quartz (silicon dioxide, SiO₂), chiefly rock crystal with smoky or included varieties) — mineral

Tumbled and polished quartz crystal points

Quartz (silicon dioxide, SiO₂), chiefly rock crystal with smoky or included varieties

Smoky Quartz (Quartz (SiO₂)) — Mineral

Smoky Quartz

Quartz (SiO₂)

Weathered quartz-rich rock, possibly milky quartz in altered host rock (Milky quartz (SiO₂), with probable iron-oxide staining and a fine-grained host matrix) — mineral

Weathered quartz-rich rock, possibly milky quartz in altered host rock

Milky quartz (SiO₂), with probable iron-oxide staining and a fine-grained host matrix