Rock Identifier

Category

Metamorphic (Likely Gneiss Or Schist Based On Texture)

Browse metamorphic (likely gneiss or schist based on texture) specimens identified by the Rock Identifier community.

White Marble (Recrystallized Calcite (CaCO3)) — metamorphic

White Marble

Recrystallized Calcite (CaCO3)

Quartzite Pebbles (Quartzite (SiO2)) — metamorphic

Quartzite Pebbles

Quartzite (SiO2)

Quartzite Pebble (Quartzite (SiO2)) — metamorphic

Quartzite Pebble

Quartzite (SiO2)

Quartzite (Quartzite (primarily Silicon Dioxide, SiO2)) — metamorphic

Quartzite

Quartzite (primarily Silicon Dioxide, SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Yellow Quartzite (River Stone) (Quartzite (primarily SiO2)) — metamorphic

Yellow Quartzite (River Stone)

Quartzite (primarily SiO2)

Marble (Recrystallized Calcite (CaCO3) / Marble) — metamorphic

Marble

Recrystallized Calcite (CaCO3) / Marble

Yellow Quartzite (River Pebble) (Quartzite (primarily SiO2)) — metamorphic

Yellow Quartzite (River Pebble)

Quartzite (primarily SiO2)

Grey Quartzite Pebble (Quartzite (primarily SiO2)) — metamorphic

Grey Quartzite Pebble

Quartzite (primarily SiO2)

Yellow Quartzite (Quartzite (primarily SiO2)) — metamorphic

Yellow Quartzite

Quartzite (primarily SiO2)

Quartzite (Metamorphosed Sandstone (mainly SiO2)) — metamorphic

Quartzite

Metamorphosed Sandstone (mainly SiO2)

Yellow Quartzite (River Pebble) (Quartzite (primarily SiO2)) — metamorphic

Yellow Quartzite (River Pebble)

Quartzite (primarily SiO2)

Yellow Quartzite (River Pebble) (Quartzite (SiO2)) — metamorphic

Yellow Quartzite (River Pebble)

Quartzite (SiO2)

Red Quartzite / Ferruginous Quartz (Quartzite (primarily Silicon Dioxide, SiO2 with Iron Oxide impurities)) — metamorphic

Red Quartzite / Ferruginous Quartz

Quartzite (primarily Silicon Dioxide, SiO2 with Iron Oxide impurities)

Quartzite (Quartzite (mainly SiO2)) — metamorphic

Quartzite

Quartzite (mainly SiO2)

Quartzite Pebble (Quartzite (principally SiO2)) — metamorphic

Quartzite Pebble

Quartzite (principally SiO2)

Yellow Quartzite (River Pebble) (Silicon Dioxide (Metamorphosed Sandstone), SiO2) — metamorphic

Yellow Quartzite (River Pebble)

Silicon Dioxide (Metamorphosed Sandstone), SiO2

Quartzite Cobble (Quartzite (SiO2)) — metamorphic

Quartzite Cobble

Quartzite (SiO2)

Marble (Recrystallized Calcite (CaCO3) or Dolomite (CaMg(CO3)2)) — metamorphic

Marble

Recrystallized Calcite (CaCO3) or Dolomite (CaMg(CO3)2)

White Marble (Metamorphosed Limestone (principally CaCO3)) — metamorphic

White Marble

Metamorphosed Limestone (principally CaCO3)

Basalt (Extrusive mafic rock (Basalt)) — igneous

Basalt

Extrusive mafic rock (Basalt)

Basalt (Basalt) — igneous

Basalt

Basalt

Basalt (Extrusive mafic igneous rock) — igneous

Basalt

Extrusive mafic igneous rock

Serpentine (Serpentine Group (primarily Antigorite or Lizardite), Mg3Si2O5(OH)4) — metamorphic

Serpentine

Serpentine Group (primarily Antigorite or Lizardite), Mg3Si2O5(OH)4

Pink Quartzite (Quartzite (SiO2 with iron oxide impurities)) — metamorphic

Pink Quartzite

Quartzite (SiO2 with iron oxide impurities)

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

Tiger's Eye

Tiger's eye (Pseudomorph of Quartz after Crocidolite), SiO2

Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions of Iron Oxide)) — metamorphic

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions of Iron Oxide)

Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)) — metamorphic

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)

Pink Granite (Felsic Plutonic Rock (primarily Quartz, Potassium Feldspar, and Plagioclase)) — Igneous

Pink Granite

Felsic Plutonic Rock (primarily Quartz, Potassium Feldspar, and Plagioclase)

Andesite (Andesite (intermediate volcanic rock)) — igneous

Andesite

Andesite (intermediate volcanic rock)

Chert (Quartz Variety) (Microcrystalline Silica (SiO2)) — sedimentary

Chert (Quartz Variety)

Microcrystalline Silica (SiO2)

Quartzite Pebble (Metamorphosed Quartz Sandstone (SiO2)) — metamorphic

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

Jasper (likely Lake Superior Jasper) (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Jasper (likely Lake Superior Jasper)

Jasper (Silicon Dioxide, SiO2)

Yellow Aventurine (Quartz Quartzite) (Silicon Dioxide with Mica inclusions (SiO2 + KAl2(AlSi3O10)(OH)2)) — Metamorphic

Yellow Aventurine (Quartz Quartzite)

Silicon Dioxide with Mica inclusions (SiO2 + KAl2(AlSi3O10)(OH)2)

Quartzite (Quartzite (Primary mineral: Silicon Dioxide, SiO2)) — metamorphic

Quartzite

Quartzite (Primary mineral: Silicon Dioxide, SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Basalt (Mafic Igneous Rock (composed primarily of plagioclase feldspar and pyroxene)) — Igneous

Basalt

Mafic Igneous Rock (composed primarily of plagioclase feldspar and pyroxene)

Pink Granite (Felsic Intrusive Igneous Rock (composed primarily of K-Feldspar, Quartz, and Mica)) — igneous

Pink Granite

Felsic Intrusive Igneous Rock (composed primarily of K-Feldspar, Quartz, and Mica)

Basalt (Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)) — igneous

Basalt

Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)

Basalt (Basalt (Aphanitic Mafic Igneous Rock)) — igneous

Basalt

Basalt (Aphanitic Mafic Igneous Rock)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)