Rock Identifier

Category

Metamorphic Rock (Composed Of Multiple Minerals)

Browse metamorphic rock (composed of multiple minerals) specimens identified by the Rock Identifier community.

River Pebble (Gabbro or Basalt) (Mafic Igneous Rock (composed primarily of Pyroxene and Plagioclase Feldspar)) — igneous

River Pebble (Gabbro or Basalt)

Mafic Igneous Rock (composed primarily of Pyroxene and Plagioclase Feldspar)

Basalt with Calcite Veins (Aphanitic mafic volcanic rock with CaCO3 inclusions) — igneous

Basalt with Calcite Veins

Aphanitic mafic volcanic rock with CaCO3 inclusions

Green Aventurine (Silicon Dioxide (SiO2) with Fuchsite inclusions) — metamorphic

Green Aventurine

Silicon Dioxide (SiO2) with Fuchsite inclusions

Yellow Quartz (Citrine or Iron-Stained Quartz) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine or Iron-Stained Quartz)

Silicon Dioxide (SiO2)

Green Calcite (Calcium Carbonate (CaCO3)) — mineral

Green Calcite

Calcium Carbonate (CaCO3)

Green Aventurine (Aventurine Quartz (SiO2 with Fuchsite inclusions)) — metamorphic

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Blue Quartzite (Quartzite with inclusions (often Dumortierite or Magnesio-riebeckite)) — metamorphic

Blue Quartzite

Quartzite with inclusions (often Dumortierite or Magnesio-riebeckite)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Schist (Mica Schist (Metamorphic Rock)) — metamorphic

Schist

Mica Schist (Metamorphic Rock)

Quartzite Pebble (with Iron Inclusions) (Metamorphic Rock (Mainly SiO2)) — metamorphic

Quartzite Pebble (with Iron Inclusions)

Metamorphic Rock (Mainly SiO2)

Quartzite (Metamorphic Rock (Mainly SiO2)) — metamorphic

Quartzite

Metamorphic Rock (Mainly SiO2)

Pink Quartzite (Silica (SiO2) - Metamorphic rock) — metamorphic

Pink Quartzite

Silica (SiO2) - Metamorphic rock

Quartzite pebble (Metamorphic rock (mainly SiO2)) — metamorphic

Quartzite pebble

Metamorphic rock (mainly SiO2)

Quartzite (Metamorphic rock (primarily SiO2)) — metamorphic

Quartzite

Metamorphic rock (primarily SiO2)

Quartzite (River Cobble) (Metamorphic Quartz-rich Rock) — metamorphic

Quartzite (River Cobble)

Metamorphic Quartz-rich Rock

Phyllite (Phyllite (Foliated metamorphic rock)) — metamorphic

Phyllite

Phyllite (Foliated metamorphic rock)

Gneiss (specifically Amphibolite Gneiss) (Gneiss) — metamorphic

Gneiss (specifically Amphibolite Gneiss)

Gneiss

Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2)) — metamorphic

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Rough Green QuartzITE / Green Aventurine (Aventurine Quartz (SiO2 + Cr-muscovite inclusions)) — metamorphic

Rough Green QuartzITE / Green Aventurine

Aventurine Quartz (SiO2 + Cr-muscovite inclusions)

Quartz / Quartzite (Silicon Dioxide (SiO2)) — metamorphic

Quartz / Quartzite

Silicon Dioxide (SiO2)

Granodiorite (Granodiorite) — igneous

Granodiorite

Granodiorite

Ferruginous Sandstone (Sandstone with Iron Oxide (Limonite/Goethite)) — sedimentary

Ferruginous Sandstone

Sandstone with Iron Oxide (Limonite/Goethite)

Sandstone (likely Ferruginous) (Arenite (primarily SiO2 with Fe2O3 staining)) — sedimentary

Sandstone (likely Ferruginous)

Arenite (primarily SiO2 with Fe2O3 staining)

Porphyritic Andesite (Andesite (Intermediate Extrusive Volcanic Rock)) — igneous

Porphyritic Andesite

Andesite (Intermediate Extrusive Volcanic Rock)

Red Jasper (Brecciated Jasper) (SiO2 (Silicon Dioxide) with Ferric Iron inclusions) — sedimentary

Red Jasper (Brecciated Jasper)

SiO2 (Silicon Dioxide) with Ferric Iron inclusions

Epidote with Quartz and Feldspar (Ca2(Al2,Fe3+)(SiO4)3(OH) (Epidote complex)) — metamorphic

Epidote with Quartz and Feldspar

Ca2(Al2,Fe3+)(SiO4)3(OH) (Epidote complex)

Green Aventurine in Host Rock (SiO2 (Quartz with Fuchsite inclusions)) — mineral

Green Aventurine in Host Rock

SiO2 (Quartz with Fuchsite inclusions)

Tiger's Eye (Silicon dioxide (SiO2) with fibrous inclusions of crocidolite (riebeckite) that have been altered to limonite and then replaced by quartz) — Mineral

Tiger's Eye

Silicon dioxide (SiO2) with fibrous inclusions of crocidolite (riebeckite) that have been altered to limonite and then replaced by quartz

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

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

Sandstone (with Iron Staining) (Clastic Sedimentary Rock (primarily Quartz, SiO2)) — sedimentary

Sandstone (with Iron Staining)

Clastic Sedimentary Rock (primarily Quartz, SiO2)

Sandstone (likely Ferruginous) (Sandstone (SiO2 with iron oxides)) — sedimentary

Sandstone (likely Ferruginous)

Sandstone (SiO2 with iron oxides)

Granite (Granite (compositional mixture of Quartz, Feldspar, and Mica)) — igneous

Granite

Granite (compositional mixture of Quartz, Feldspar, and Mica)

Almandine Garnet in Matrix (Almandine (Fe3Al2(SiO4)3)) — metamorphic

Almandine Garnet in Matrix

Almandine (Fe3Al2(SiO4)3)

Blue Calcite (Calcium Carbonate (CaCO3)) — mineral

Blue Calcite

Calcium Carbonate (CaCO3)

White Jade / Jadeite (NaAlSi2O6 (Sodium Aluminum Silicate)) — metamorphic

White Jade / Jadeite

NaAlSi2O6 (Sodium Aluminum Silicate)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Sandstone Geode (Unbroken) (Siliciclastic sedimentary rock (primarily Quartz)) — sedimentary

Sandstone Geode (Unbroken)

Siliciclastic sedimentary rock (primarily Quartz)

Orange Quartzite / Quartz (Silicon Dioxide (SiO2) with iron oxide inclusions) — metamorphic

Orange Quartzite / Quartz

Silicon Dioxide (SiO2) with iron oxide inclusions

Ferruginous Quartzite (also known as Ironstone or Gossan) (Ferruginous Quartzite with Goethite/Hematite staining) — metamorphic

Ferruginous Quartzite (also known as Ironstone or Gossan)

Ferruginous Quartzite with Goethite/Hematite staining

Quartzite with Quartz Vein (Metamorphosed Quartz-rich Arenite (SiO2)) — metamorphic

Quartzite with Quartz Vein

Metamorphosed Quartz-rich Arenite (SiO2)

Clear Quartz Crystal (Quartz (Silicon Dioxide, SiO2)) — mineral

Clear Quartz Crystal

Quartz (Silicon Dioxide, SiO2)