Rock Identifier

Category

Metamorphic And Igneous

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

Learn about Metamorphic And Igneous in the encyclopedia

Carbonatite

Cordierite Hornfels

Cordierite Hornfels

Metabasalt

Eulysite

Migmatite

Anthracite

Metaquartzite

Slate

Marble

Hornfels

Metarhyolite

Metagabbro

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide - SiO2)

Granite / Gneiss (Felsic Metamorphic or Igneous Rock) (Gneiss (or weathered Granite)) — metamorphic

Granite / Gneiss (Felsic Metamorphic or Igneous Rock)

Gneiss (or weathered Granite)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Weathered, rounded rock (likely metamorphic or igneous) (Undetermined; possibly a quartz- and feldspar-bearing rock) — metamorphic

Weathered, rounded rock (likely metamorphic or igneous)

Undetermined; possibly a quartz- and feldspar-bearing rock

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

Bull Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Milky Quartz with Chlorite/Moss Infusions (Silicon Dioxide (SiO2)) — mineral

Milky Quartz with Chlorite/Moss Infusions

Silicon Dioxide (SiO2)

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

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

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

Milky Quartz (Common Quartz)

Quartz (Silicon Dioxide, SiO2)

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

Cloud Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

Quartz-bearing rock fragment (Likely quartz (SiO₂) with iron-oxide staining and possible feldspar/matrix minerals) — mineral

Quartz-bearing rock fragment

Likely quartz (SiO₂) with iron-oxide staining and possible feldspar/matrix minerals

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

White Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

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

Quartz (Milky Quartz with Iron Staining)

Silicon Dioxide (SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

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

Quartz (Iron-stained or Ferruginous)

Silicon Dioxide (SiO2)

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

Milky Quartz

Quartz / Silicon Dioxide (SiO2)

Milky Quartz (Water-worn pebble/nodule) (Quartz (Silicon Dioxide - SiO2)) — mineral

Milky Quartz (Water-worn pebble/nodule)

Quartz (Silicon Dioxide - SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Feldspar in Matrix (Feldspar group minerals in metamorphic or igneous matrix) — igneous

Feldspar in Matrix

Feldspar group minerals in metamorphic or igneous matrix

Blue-gray feldspar-rich rock, likely labradorite-bearing gneiss or anorthosite (Plagioclase feldspar (albite–anorthite series), possibly with labradorite; exact rock identification is uncertain from one photo) — metamorphic

Blue-gray feldspar-rich rock, likely labradorite-bearing gneiss or anorthosite

Plagioclase feldspar (albite–anorthite series), possibly with labradorite; exact rock identification is uncertain from one photo

Black Star Diopside (Diopside (CaMgSi2O6) with Magnetite inclusions) — mineral

Black Star Diopside

Diopside (CaMgSi2O6) with Magnetite inclusions

Quartz vein in weathered host rock (Quartz (SiO₂), likely in a weathered metamorphic or igneous matrix) — mineral

Quartz vein in weathered host rock

Quartz (SiO₂), likely in a weathered metamorphic or igneous matrix

Rounded granitic/gneissic cobble (Probable granodiorite or orthogneiss; quartz–feldspar–biotite aggregate) — igneous

Rounded granitic/gneissic cobble

Probable granodiorite or orthogneiss; quartz–feldspar–biotite aggregate

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Weathered quartz-rich stone, likely milky quartz (Quartz (SiO₂), possibly a quartz-rich metamorphic or igneous fragment) — mineral

Weathered quartz-rich stone, likely milky quartz

Quartz (SiO₂), possibly a quartz-rich metamorphic or igneous fragment

Milky quartz vein fragment (Quartz (silicon dioxide, SiO₂), massive/microcrystalline variety) — mineral

Milky quartz vein fragment

Quartz (silicon dioxide, SiO₂), massive/microcrystalline variety

Pink Quartz (Silicon Dioxide (SiO2)) — mineral

Pink Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Sapphire (Corundum (Al2O3)) — mineral

Sapphire

Corundum (Al2O3)

Gold (Gold (Au)) — Mineral

Gold

Gold (Au)

Rounded gray river pebble (Likely quartz-rich metamorphic or igneous pebble; exact identification requires testing) — sedimentary

Rounded gray river pebble

Likely quartz-rich metamorphic or igneous pebble; exact identification requires testing

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Galena (Lead Sulfide (PbS)) — mineral

Galena

Lead Sulfide (PbS)

Yellow Calcite (Calcium Carbonate, CaCO3) — mineral

Yellow Calcite

Calcium Carbonate, CaCO3

Serafina (Serafinite / Clinochlore) (Clinochlore (Mg5Al)(AlSi3O10)(OH)8) — mineral

Serafina (Serafinite / Clinochlore)

Clinochlore (Mg5Al)(AlSi3O10)(OH)8

Calcite (Calcite (CaCO₃)) — Mineral

Calcite

Calcite (CaCO₃)

Iceland Spar (Optical Calcite) (Calcite (CaCO3)) — mineral

Iceland Spar (Optical Calcite)

Calcite (CaCO3)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Yellow Calcite (Calcium Carbonate (CaCO3)) — mineral

Yellow Calcite

Calcium Carbonate (CaCO3)