Rock Identifier

Category

Metamorphic Rock

Browse metamorphic rock specimens identified by the Rock Identifier community.

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

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

River Quartzite or Chert Pebble (Quartzite (primarily Silicon Dioxide - SiO2)) — metamorphic

River Quartzite or Chert Pebble

Quartzite (primarily Silicon Dioxide - SiO2)

Yellow Quartzite (Tumbled) (Quartzite (SiO2)) — metamorphic

Yellow Quartzite (Tumbled)

Quartzite (SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Quartzite (Quartzite (Primary mineral: SiO2)) — metamorphic

Quartzite

Quartzite (Primary mineral: SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Diorite Gneiss (Foliated Diorite Gneiss) — metamorphic

Diorite Gneiss

Foliated Diorite Gneiss

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

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

Quartz (Water-worn pebble)

Silicon Dioxide (SiO2)

Quartzite (specifically an iron-stained or Carnelian-colored variety) (Silicon Dioxide (SiO2) with iron oxide inclusions) — metamorphic

Quartzite (specifically an iron-stained or Carnelian-colored variety)

Silicon Dioxide (SiO2) with iron oxide inclusions

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Green Aventurine (Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)) — metamorphic

Green Aventurine

Quartzite with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Quartz in Matrix (possibly with Biotite or Hornblende) (Quartz (Silicon Dioxide, SiO2) in Granitic Matrix) — igneous

Quartz in Matrix (possibly with Biotite or Hornblende)

Quartz (Silicon Dioxide, SiO2) in Granitic Matrix

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Sandstone (with potentially metamorphic or basaltic bands) (Arenite / Lithic Wacke) — sedimentary

Sandstone (with potentially metamorphic or basaltic bands)

Arenite / Lithic Wacke

Pink Quartzite (Quartzite (primarily SiO2)) — metamorphic

Pink Quartzite

Quartzite (primarily SiO2)

Coarse Sand Grain / Lithic Fragment (Clastic Sediment (Lithic fragment or Quartz/Feldspar grain)) — sedimentary

Coarse Sand Grain / Lithic Fragment

Clastic Sediment (Lithic fragment or Quartz/Feldspar grain)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartzite (Beach Pebble) (Quartzite (composed primarily of SiO2)) — metamorphic

Quartzite (Beach Pebble)

Quartzite (composed primarily of SiO2)

Marble (Marble (metamorphosed limestone or dolostone), primarily composed of calcite (CaCO3) or dolomite (CaMg(CO3)2)) — metamorphic

Marble

Marble (metamorphosed limestone or dolostone), primarily composed of calcite (CaCO3) or dolomite (CaMg(CO3)2)

Mica Schist (Mica Schist) — metamorphic

Mica Schist

Mica Schist

Serpentinite (Serpentinite (composed primarily of serpentine group minerals like lizardite, antigorite, and chrysotile)) — metamorphic

Serpentinite

Serpentinite (composed primarily of serpentine group minerals like lizardite, antigorite, and chrysotile)

Quartz (Vein Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Vein Quartz)

Silicon Dioxide (SiO2)

Quartzite with Hematite staining (Quartzite (SiO2)) — metamorphic

Quartzite with Hematite staining

Quartzite (SiO2)

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

Pink Quartzite

Quartzite (mainly SiO2 with iron oxide impurities)

Quartzite River Cobble (Quartzite (primarily SiO2)) — metamorphic

Quartzite River Cobble

Quartzite (primarily SiO2)

Red Quartzite / Ferruginous Quartzite (Quartzite (primarily SiO2 with Fe2O3 inclusions)) — metamorphic

Red Quartzite / Ferruginous Quartzite

Quartzite (primarily SiO2 with Fe2O3 inclusions)

Schist (Mica Schist (formula variable based on mineral content, typically containing [K,Al,Fe,Mg,Si,O,H])) — metamorphic

Schist

Mica Schist (formula variable based on mineral content, typically containing [K,Al,Fe,Mg,Si,O,H])

Iron-Stained Quartzite (Recrystallized Meta-Quartzite (primarily SiO2)) — metamorphic

Iron-Stained Quartzite

Recrystallized Meta-Quartzite (primarily SiO2)

Jasper with Epidote Vein (Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate (Ca2(Al,Fe)3(SiO4)3(OH))) — sedimentary

Jasper with Epidote Vein

Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate (Ca2(Al,Fe)3(SiO4)3(OH))

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

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Lapis Lazuli (Complex mixture of minerals, primarily Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2) — metamorphic

Lapis Lazuli

Complex mixture of minerals, primarily Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Quartzite (River Stone) (Metamorphosed Quartz Sandstone (SiO2)) — metamorphic

Quartzite (River Stone)

Metamorphosed Quartz Sandstone (SiO2)

Graphite-veined Quartzite (Meta-sedimentary Quartzite with Carbonaceous/Graphitic Inclusions (SiO2 + C)) — metamorphic

Graphite-veined Quartzite

Meta-sedimentary Quartzite with Carbonaceous/Graphitic Inclusions (SiO2 + C)

Quartz (in a rock matrix) (Quartz (SiO2)) — mineral

Quartz (in a rock matrix)

Quartz (SiO2)

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

Red Quartzite

Quartzite (SiO2 with iron oxide impurities)

Peacock Ore (Bornite or Chalcopyrite treated with acid) (Bornite (Cu5FeS4) or Acid-washed Chalcopyrite (CuFeS2)) — mineral

Peacock Ore (Bornite or Chalcopyrite treated with acid)

Bornite (Cu5FeS4) or Acid-washed Chalcopyrite (CuFeS2)

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

Clear Quartz

Quartz (Silicon Dioxide, SiO2)