Rock Identifier

Category

Sedimentary Or Metamorphic (Low Grade)

Browse sedimentary or metamorphic (low grade) specimens identified by the Rock Identifier community.

Learn about Sedimentary Or Metamorphic (Low Grade) in the encyclopedia

Greenschist

Slate

Lignite

Calcilutite

Calcirudite

Grape Garnet

Grape Agate

Granulite

Chlorite Schist

Chlorite Schist

Turbidite

Conglomerate

Greenstone

Red Jasper (Beach Pebble) (SiO2 (Microcrystalline Quartz with Hematite inclusions)) — sedimentary

Red Jasper (Beach Pebble)

SiO2 (Microcrystalline Quartz with Hematite inclusions)

Brown Jasper / River Pebble (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Brown Jasper / River Pebble

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Green Calcite (Calcite (CaCO3)) — mineral

Green Calcite

Calcite (CaCO3)

Epidote (Calcium aluminum iron silicate hydroxide (Ca2(Al,Fe)3(SiO4)3(OH))) — metamorphic

Epidote

Calcium aluminum iron silicate hydroxide (Ca2(Al,Fe)3(SiO4)3(OH))

Milky Quartz with Talc / Serpentine (Silicon Dioxide (SiO2) with Mg3Si4O10(OH)2) — metamorphic

Milky Quartz with Talc / Serpentine

Silicon Dioxide (SiO2) with Mg3Si4O10(OH)2

Greenstone / Serpentinite (Serpentine-group / Altered Mafic Rock) — metamorphic

Greenstone / Serpentinite

Serpentine-group / Altered Mafic Rock

Greenstone (Chlorite schist or Epidosite) — metamorphic

Greenstone

Chlorite schist or Epidosite

Weathered schist or phyllite (Mica schist/phyllite, likely quartz–mica-rich metamorphic rock) — metamorphic

Weathered schist or phyllite

Mica schist/phyllite, likely quartz–mica-rich metamorphic rock

Greenstone (Protolith of basalt/gabbro (chlorite-epidote metamorphic facies)) — metamorphic

Greenstone

Protolith of basalt/gabbro (chlorite-epidote metamorphic facies)

Slate (Foliated Metamorphic Rock (composed mainly of Quartz, Illite, and Chlorite)) — metamorphic

Slate

Foliated Metamorphic Rock (composed mainly of Quartz, Illite, and Chlorite)

Greenstone / River Siltstone (Metasedimentary Greenstone (Chlorite-rich Siltstone)) — metamorphic

Greenstone / River Siltstone

Metasedimentary Greenstone (Chlorite-rich Siltstone)

Muscovite Schist (Muscovite Mica Schist (KAl2(AlSi3O10)(OH)2)) — metamorphic

Muscovite Schist

Muscovite Mica Schist (KAl2(AlSi3O10)(OH)2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Greenschist (Greenschist (Chlorite Schist)) — metamorphic

Greenschist

Greenschist (Chlorite Schist)

Slate (Metamorphic pelitic rock) — metamorphic

Slate

Metamorphic pelitic rock

Green Schist (Greenschist (containing Chlorite, Actinolite, and Epidote)) — metamorphic

Green Schist

Greenschist (containing Chlorite, Actinolite, and Epidote)

Emerald (Beryl (Be3Al2(SiO3)6) colored by Chromium and/or Vanadium) — mineral

Emerald

Beryl (Be3Al2(SiO3)6) colored by Chromium and/or Vanadium

Quartz Pebble with Chlorite or Epidote Inclusions (Silicon Dioxide (SiO2) with inclusions) — metamorphic

Quartz Pebble with Chlorite or Epidote Inclusions

Silicon Dioxide (SiO2) with inclusions

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Jadeite Carving (Pixiu) (Jadeite (NaAlSi2O6)) — gemstone

Jadeite Carving (Pixiu)

Jadeite (NaAlSi2O6)

Greenschist (containing Epidote and Quartz) (Greenschist (Epidote-Chlorite-Actinolite Schist)) — metamorphic

Greenschist (containing Epidote and Quartz)

Greenschist (Epidote-Chlorite-Actinolite Schist)

Epidote (Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))) — metamorphic

Epidote

Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

Greenstone (Greenschist) — metamorphic

Greenstone

Greenschist

Jadeite Jade (NaAlSi2O6 (Sodium Aluminum Silicate)) — gemstone

Jadeite Jade

NaAlSi2O6 (Sodium Aluminum Silicate)

River Quartzite Siltstone (Quartz-rich Meta-siltstone (SiO2 dominated)) — metamorphic

River Quartzite Siltstone

Quartz-rich Meta-siltstone (SiO2 dominated)

Greenschist (Greenschist (Chlorite Schist)) — metamorphic

Greenschist

Greenschist (Chlorite Schist)

Epidote (Epidote (Ca2(Al,Fe)3(SiO4)3(OH))) — metamorphic

Epidote

Epidote (Ca2(Al,Fe)3(SiO4)3(OH))

Greenstone (Metabasalt / Metavolcanic rock) — metamorphic

Greenstone

Metabasalt / Metavolcanic rock

Greenstone (Metabasalt / Chlorite-actinolite-epidote schist) — metamorphic

Greenstone

Metabasalt / Chlorite-actinolite-epidote schist

Fuchsite (Muscovite (chromium-rich), K(Al,Cr)2(AlSi3O10)(OH)2) — metamorphic

Fuchsite

Muscovite (chromium-rich), K(Al,Cr)2(AlSi3O10)(OH)2

Serpentine (Serpentinite) (Serpentine group ((Mg,Fe,Ni,Al,Zn,Mn)3(Si,Fe)2O5(OH)4)) — metamorphic

Serpentine (Serpentinite)

Serpentine group ((Mg,Fe,Ni,Al,Zn,Mn)3(Si,Fe)2O5(OH)4)

Greenschist (Greenschist facies rock (containing chlorite, actinolite, and epidote)) — metamorphic

Greenschist

Greenschist facies rock (containing chlorite, actinolite, and epidote)

Greenstone (Protolith of basalt, diabase, or gabbro; often contains minerals like chlorite, actinolite, and epidote) — metamorphic

Greenstone

Protolith of basalt, diabase, or gabbro; often contains minerals like chlorite, actinolite, and epidote

Chlorite (Small Flakes/Sand) (Chlorite Group (Magnesium Iron Aluminum Silicate Hydroxide - (Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6)) — mineral

Chlorite (Small Flakes/Sand)

Chlorite Group (Magnesium Iron Aluminum Silicate Hydroxide - (Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6)

Serpentinite (or Green Quartz Pebble) (Mg3Si2O5(OH)4 (Serpentine group) / SiO2 (Quartz mix)) — metamorphic

Serpentinite (or Green Quartz Pebble)

Mg3Si2O5(OH)4 (Serpentine group) / SiO2 (Quartz mix)

Anthracite Coal (Anthracite (Carbon-rich metamorphic coal)) — sedimentary

Anthracite Coal

Anthracite (Carbon-rich metamorphic coal)

Jadeite Jade (NaAlSi2O6) — metamorphic

Jadeite Jade

NaAlSi2O6

Slate (Metamorphic mudstone or shale) — metamorphic

Slate

Metamorphic mudstone or shale

Fuchsite (Chrome Mica) (K(Al,Cr)2(AlSi3O10)(OH)2) — metamorphic

Fuchsite (Chrome Mica)

K(Al,Cr)2(AlSi3O10)(OH)2

Prehnite (Calcium aluminum silicate hydroxide - Ca2Al(AlSi3O10)(OH)2) — mineral

Prehnite

Calcium aluminum silicate hydroxide - Ca2Al(AlSi3O10)(OH)2

Limonite (FeO(OH)·n(H2O)) — mineral

Limonite

FeO(OH)·n(H2O)

Epidote (Epidote Group (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))) — metamorphic

Epidote

Epidote Group (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))