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.

Pink Granite (Granite (Phaneritic intrusive rock rich in K-feldspar)) — igneous

Pink Granite

Granite (Phaneritic intrusive rock rich in K-feldspar)

Lepidolite (Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)) — mineral

Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Pink Lepidolite (Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)) — mineral

Pink Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Diabase (Diabase (also known as Dolerite)) — igneous

Diabase

Diabase (also known as Dolerite)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

River Pebble (Quartzite/Sandstone mix) (Quartzite (primarily SiO2)) — metamorphic

River Pebble (Quartzite/Sandstone mix)

Quartzite (primarily SiO2)

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

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

Iron-stained Quartz (Gossan/Limonite-coated Quartz) (Silicon Dioxide (SiO2) with Hydrated Iron Oxides (FeO(OH)·nH2O)) — mineral

Iron-stained Quartz (Gossan/Limonite-coated Quartz)

Silicon Dioxide (SiO2) with Hydrated Iron Oxides (FeO(OH)·nH2O)

Basalt (Basalt (Mainly Plagioclase Feldspar and Pyroxene)) — igneous

Basalt

Basalt (Mainly Plagioclase Feldspar and Pyroxene)

Quartzite (Metamorphosed Quartz Sandstone (SiO2)) — metamorphic

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Green Quartzite (Metamorphic Quartz (SiO2) with Chromium-rich inclusions (Fuchsite)) — metamorphic

Green Quartzite

Metamorphic Quartz (SiO2) with Chromium-rich inclusions (Fuchsite)

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

Quartzite (River Cobble)

Quartzite (SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Quartzite (Quartz-rich Cobble) (Quartzite (SiO2)) — metamorphic

Quartzite (Quartz-rich Cobble)

Quartzite (SiO2)

Quartzite River Pebbles (Quartzite (primarily SiO2)) — Metamorphic

Quartzite River Pebbles

Quartzite (primarily SiO2)

Quartzite with Iron Inclusions (Quartzite (primarily SiO2 with Fe2O3 impurities)) — metamorphic

Quartzite with Iron Inclusions

Quartzite (primarily SiO2 with Fe2O3 impurities)

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

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Quartzite (Meta-sandstone (mostly SiO2)) — metamorphic

Quartzite

Meta-sandstone (mostly SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Greenstone (Greenschist (metamorphosed mafic igneous rock)) — metamorphic

Greenstone

Greenschist (metamorphosed mafic igneous rock)

Purple Chalcedony (likely dyed Agate) (Silicon Dioxide (SiO2)) — mineral

Purple Chalcedony (likely dyed Agate)

Silicon Dioxide (SiO2)

Ferruginous Quartzite (Iron-stained Quartz) (Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3)) — metamorphic

Ferruginous Quartzite (Iron-stained Quartz)

Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3)

Quartz Vein in Host Rock (Likely Slate or Shale) (Hydrothermal Quartz (SiO2) in Pelitic host rock) — metamorphic

Quartz Vein in Host Rock (Likely Slate or Shale)

Hydrothermal Quartz (SiO2) in Pelitic host rock

Crushed Limestone (Calcium Carbonate (CaCO3)) — Sedimentary

Crushed Limestone

Calcium Carbonate (CaCO3)

Slag (Metallurgical by-product) — Anthropogenic (Man-made material)

Slag

Metallurgical by-product

Anthropogenic (Man-made material)

Nephrite Jade (Ca2(Mg,Fe)5Si8O22(OH)2) — metamorphic

Nephrite Jade

Ca2(Mg,Fe)5Si8O22(OH)2

Greenstone (Greenschist / Greenstone (Chlorite-Epidote facies)) — metamorphic

Greenstone

Greenschist / Greenstone (Chlorite-Epidote facies)

Quartzite Pebbles (Meta-quartzite (SiO2)) — metamorphic

Quartzite Pebbles

Meta-quartzite (SiO2)

Red Granite (Felsic intrusive igneous rock (K-feldspar rich Granite)) — igneous

Red Granite

Felsic intrusive igneous rock (K-feldspar rich Granite)

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

Diorite

Diorite (Intermediate intrusive igneous rock)

Sandstone (Ferruginous) (Arenite (iron-rich)) — sedimentary

Sandstone (Ferruginous)

Arenite (iron-rich)

Pink Thulite (in Pumice-like texture) (Pink Zoisite (Mn-bearing Zoisite), Ca2Al3(SiO4)3(OH)) — metamorphic

Pink Thulite (in Pumice-like texture)

Pink Zoisite (Mn-bearing Zoisite), Ca2Al3(SiO4)3(OH)

Slag (Ferrous slag (by-product of iron smelting)) — Mineraloid / Anthropogenic

Slag

Ferrous slag (by-product of iron smelting)

Mineraloid / Anthropogenic

Weathered Quartzite or Chert Pebble (Silicon Dioxide (SiO2)) — metamorphic or sedimentary

Weathered Quartzite or Chert Pebble

Silicon Dioxide (SiO2)

metamorphic or sedimentary

Basalt (Drill Core) (Mafic Volcanic Rock (Basalt)) — igneous

Basalt (Drill Core)

Mafic Volcanic Rock (Basalt)

Marble (Metamorphic Limestone (CaCO3)) — metamorphic

Marble

Metamorphic Limestone (CaCO3)

Basalt with Calcite Veins (Basalt (Mafic Volcanic Rock)) — igneous

Basalt with Calcite Veins

Basalt (Mafic Volcanic Rock)

Basalt (Basalt) — igneous

Basalt

Basalt

Ferruginous Quartzite (Red Chert/Jasper-like) (Metamorphosed Quartzite with Hematite inclusions (SiO2 + Fe2O3)) — metamorphic

Ferruginous Quartzite (Red Chert/Jasper-like)

Metamorphosed Quartzite with Hematite inclusions (SiO2 + Fe2O3)

Quartzite Pebble (SiO2 (Silicon Dioxide)) — metamorphic

Quartzite Pebble

SiO2 (Silicon Dioxide)