Rock Identifier

Category

Igneous And Metamorphic

Browse igneous and metamorphic specimens identified by the Rock Identifier community.

Learn about Igneous And Metamorphic in the encyclopedia

Carbonatite

Cordierite Hornfels

Cordierite Hornfels

Metabasalt

Eulysite

Migmatite

Anthracite

Metaquartzite

Slate

Marble

Hornfels

Metarhyolite

Metagabbro

Small quartz crystal (likely milky quartz) (Quartz, silicon dioxide (SiO₂)) — mineral

Small quartz crystal (likely milky quartz)

Quartz, silicon dioxide (SiO₂)

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)

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

Milky quartz (rough fragment)

Quartz, silicon dioxide (SiO₂)

Mixed Mineral Collection (with Titanium Aura Quartz) (Silicon Dioxide (SiO2) with metallic coatings and various silicates) — mineral

Mixed Mineral Collection (with Titanium Aura Quartz)

Silicon Dioxide (SiO2) with metallic coatings and various silicates

Citrine or Yellow Quartz (Quartz (SiO2) with iron impurities) — mineral

Citrine or Yellow Quartz

Quartz (SiO2) with iron impurities

Gold (Native gold (Au)) — mineral

Gold

Native gold (Au)

Tumbled Amethyst (Quartz (Silicon Dioxide, SiO2)) — gemstone

Tumbled Amethyst

Quartz (Silicon Dioxide, SiO2)

Citrine Quartz (Silicon Dioxide (SiO2)) — mineral

Citrine Quartz

Silicon Dioxide (SiO2)

Moonstone (Feldspar) (Orthoclase (KAlSi3O8) or Albite (NaAlSi3O8)) — mineral

Moonstone (Feldspar)

Orthoclase (KAlSi3O8) or Albite (NaAlSi3O8)

Quartz (Quartz (SiO₂)) — Mineral

Quartz

Quartz (SiO₂)

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

Milky quartz (rough specimen)

Quartz, silicon dioxide (SiO₂)

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)

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)

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

Milky quartz

Quartz (silicon dioxide, SiO₂)

Raw blue-green apatite crystal (Apatite group, likely fluorapatite — Ca₅(PO₄)₃F) — mineral

Raw blue-green apatite crystal

Apatite group, likely fluorapatite — Ca₅(PO₄)₃F

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

Likely milky quartz

Quartz (silicon dioxide, SiO₂)

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

Likely milky quartz fragment

Quartz (silicon dioxide, SiO₂)

Golden Calcite (Calcium Carbonate (CaCO3)) — mineral

Golden Calcite

Calcium Carbonate (CaCO3)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Honey Calcite (Calcium Carbonate (CaCO3)) — mineral

Honey Calcite

Calcium Carbonate (CaCO3)

Likely polished dark metallic mineral specimen (Indeterminate from image; possibly hematite, magnetite, or galena) — mineral

Likely polished dark metallic mineral specimen

Indeterminate from image; possibly hematite, magnetite, or galena

Blue Calcite (Calcium Carbonate (CaCO3)) — mineral

Blue Calcite

Calcium Carbonate (CaCO3)

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)

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

Milky quartz

Quartz (silicon dioxide, SiO₂)

Likely rough quartz crystal fragment (Quartz (SiO₂), possibly iron-stained milky quartz) — mineral

Likely rough quartz crystal fragment

Quartz (SiO₂), possibly iron-stained milky quartz

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

Smoky Quartz (Tumbled)

Silicon Dioxide (SiO2)

Hypersthene (Enstatite (Hypersthene variety), (Mg,Fe)SiO3) — mineral

Hypersthene

Enstatite (Hypersthene variety), (Mg,Fe)SiO3

Green Calcite (Calcium Carbonate (CaCO3)) — mineral

Green Calcite

Calcium Carbonate (CaCO3)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO₂)) — mineral

Smoky Quartz

Silicon Dioxide (SiO₂)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Muscovite Mica (KAl2(AlSi3O10)(F,OH)2) — mineral

Muscovite Mica

KAl2(AlSi3O10)(F,OH)2

Muscovite Mica (Muscovite (KAl2(AlSi3O10)(OH)2)) — mineral

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

Chalcopyrite in Matrix (CuFeS2) — mineral

Chalcopyrite in Matrix

CuFeS2

Small dark mineral fragment, possibly mica or a metallic sulfide (Unidentified from image; possible biotite mica or iron sulfide (pyrite-group)) — mineral

Small dark mineral fragment, possibly mica or a metallic sulfide

Unidentified from image; possible biotite mica or iron sulfide (pyrite-group)

$Clear quartz crystal (Quartz (SiO₂), likely a small rough or naturally fractured crystal) — mineral$

Clear quartz crystal

Quartz (SiO₂), likely a small rough or naturally fractured crystal

Small rounded mineral/rock fragment (Indeterminate; possibly quartz-rich stone or feldspar) — mineral

Small rounded mineral/rock fragment

Indeterminate; possibly quartz-rich stone or feldspar

Small tumbled pebble (likely quartz or feldspar) (Indeterminate; probable quartz (SiO₂) or feldspar) — mineral

Small tumbled pebble (likely quartz or feldspar)

Indeterminate; probable quartz (SiO₂) or feldspar