Rock Identifier

Category

Minerals

Browse minerals specimens identified by the Rock Identifier community.

Learn about Minerals in the encyclopedia

Glauconite

Hutcheonite

Halite

Sperrylite

Baddeleyite

Anatase

Brookite

Talc

Euxenite

Eltyubyuite

Buergerite

Dolomite

Granite (Intrusive Igneous Rock (Felsic)) — igneous

Granite

Intrusive Igneous Rock (Felsic)

Likely quartz-rich pebble (Quartz (SiO₂), possibly iron-stained milky quartz or quartzite) — mineral

Likely quartz-rich pebble

Quartz (SiO₂), possibly iron-stained milky quartz or quartzite

Rounded pale quartz-rich pebble (Likely milky quartz or quartzite (SiO₂); exact identification is uncertain from the photograph) — mineral

Rounded pale quartz-rich pebble

Likely milky quartz or quartzite (SiO₂); exact identification is uncertain from the photograph

Quartz with Mica/Host Rock (Silicon Dioxide (SiO2) with Phyllosilicates) — mineral

Quartz with Mica/Host Rock

Silicon Dioxide (SiO2) with Phyllosilicates

Quartz-rich pegmatite (likely feldspar–quartz rock) (Granitic pegmatite; predominantly quartz (SiO₂) and feldspar, with possible mica and iron-oxide staining) — igneous

Quartz-rich pegmatite (likely feldspar–quartz rock)

Granitic pegmatite; predominantly quartz (SiO₂) and feldspar, with possible mica and iron-oxide staining

Copper Ore (Mixed copper sulfides/oxides in gangue matrix) — mineral

Copper Ore

Mixed copper sulfides/oxides in gangue matrix

Pegmatitic granite (Coarse-grained granite/pegmatite, chiefly quartz, feldspar, and mica) — igneous

Pegmatitic granite

Coarse-grained granite/pegmatite, chiefly quartz, feldspar, and mica

Diorite (Diorite (Phaneritic intermediate plutonic rock)) — igneous

Diorite

Diorite (Phaneritic intermediate plutonic rock)

Diorite (Diorite (Intermediate intrusive igneous rock)) — igneous

Diorite

Diorite (Intermediate intrusive igneous rock)

Gneiss (Metamorphic Pebble) (Gneiss (SiO2-rich metamorphic rock)) — metamorphic

Gneiss (Metamorphic Pebble)

Gneiss (SiO2-rich metamorphic rock)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Granodiorite (Granodiorite) — igneous

Granodiorite

Granodiorite

Gneiss (Metamorphic Foliated Gneiss) — metamorphic

Gneiss

Metamorphic Foliated Gneiss

Weathered greenish metamorphic rock, likely serpentinite (Serpentinite, dominated by serpentine-group minerals (commonly antigorite, lizardite, or chrysotile)) — metamorphic

Weathered greenish metamorphic rock, likely serpentinite

Serpentinite, dominated by serpentine-group minerals (commonly antigorite, lizardite, or chrysotile)

Quartz-rich pegmatite (likely mica-bearing granite) (Granitic pegmatite; chiefly quartz (SiO₂), feldspar, and mica (muscovite/biotite)) — igneous

Quartz-rich pegmatite (likely mica-bearing granite)

Granitic pegmatite; chiefly quartz (SiO₂), feldspar, and mica (muscovite/biotite)

Vesicular basalt (Basalt, commonly plagioclase feldspar + pyroxene ± olivine) — igneous

Vesicular basalt

Basalt, commonly plagioclase feldspar + pyroxene ± olivine

Vesicular basalt (likely iron-rich volcanic rock) (Basalt; predominantly plagioclase feldspar, pyroxene, and commonly olivine, with iron oxides) — igneous

Vesicular basalt (likely iron-rich volcanic rock)

Basalt; predominantly plagioclase feldspar, pyroxene, and commonly olivine, with iron oxides

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

Gneiss

Gneiss (High-grade metamorphic rock)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

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

Diorite (Salt and Pepper Rock)

Diorite

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Gneiss (Banded Gneiss) (Gneiss) — metamorphic

Gneiss (Banded Gneiss)

Gneiss

Quartz pebble (Silicon dioxide (SiO2)) — mineral

Quartz pebble

Silicon dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Greenstone (Metabasalt / Chlorite Schist) — metamorphic

Greenstone

Metabasalt / Chlorite Schist

Weathered, quartz-rich metamorphic rock (likely schist or gneiss) (Quartz–feldspar–mica schist/gneiss, with surface lichens and iron-oxide staining) — metamorphic

Weathered, quartz-rich metamorphic rock (likely schist or gneiss)

Quartz–feldspar–mica schist/gneiss, with surface lichens and iron-oxide staining

Milky quartz (Quartz (SiO₂), likely massive milky quartz) — mineral

Milky quartz

Quartz (SiO₂), likely massive milky quartz

Quartz Pebble (Quartz (Silicon Dioxide, SiO2)) — sedimentary

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Greenstone (Metabasalt (Greenstone)) — metamorphic

Greenstone

Metabasalt (Greenstone)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz-rich Diorite (Diorite (Phaneritic intermediate igneous rock)) — igneous

Quartz-rich Diorite

Diorite (Phaneritic intermediate igneous rock)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Granodiorite (Granodiorite) — igneous

Granodiorite

Granodiorite

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

Gneiss (High-grade Metamorphic Rock)

Gneiss

Granite (Granite (compositionally: Quartz, Alkali Feldspar, and Plagioclase)) — igneous

Granite

Granite (compositionally: Quartz, Alkali Feldspar, and Plagioclase)

Green glassy slag or manufactured glass bead (Noncrystalline silicate glass; likely industrial glass/slag, not a true mineral) — mineral

Green glassy slag or manufactured glass bead

Noncrystalline silicate glass; likely industrial glass/slag, not a true mineral

Banded Gneiss (Gneiss (Metamorphic rock composed of feldspar, quartz, and mica)) — metamorphic

Banded Gneiss

Gneiss (Metamorphic rock composed of feldspar, quartz, and mica)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss