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

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

Serpentine

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Serpentinite (Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)3Si2O5(OH)4) — metamorphic

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)3Si2O5(OH)4

Dumortierite Quartz (Aluminum Borate Silicate Oxide (Al7BO3(SiO4)3O3)) — mineral

Dumortierite Quartz

Aluminum Borate Silicate Oxide (Al7BO3(SiO4)3O3)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Biotite Schist (Biotite Schist) — Metamorphic

Biotite Schist

Biotite Schist

Rhodolite Garnet (Mg3Al2(SiO4)3 - Fe3Al2(SiO4)3 (Pyrope-Almandine series)) — mineral

Rhodolite Garnet

Mg3Al2(SiO4)3 - Fe3Al2(SiO4)3 (Pyrope-Almandine series)

Serpentinite (Serpentinite (composed mainly of Serpentine-group minerals: (Mg, Fe)3Si2O5(OH)4)) — metamorphic

Serpentinite

Serpentinite (composed mainly of Serpentine-group minerals: (Mg, Fe)3Si2O5(OH)4)

Pink Quartzite (Quartzite (SiO2)) — metamorphic

Pink Quartzite

Quartzite (SiO2)

Carnelian (Silicon Dioxide (Chalcedony variety), SiO2) — gemstone

Carnelian

Silicon Dioxide (Chalcedony variety), SiO2

Chalcedony (Agate / Quartz Pebble) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate / Quartz Pebble)

Silicon Dioxide (SiO2)

Black Onyx (Chalcedony (Silicon Dioxide - SiO2)) — mineral

Black Onyx

Chalcedony (Silicon Dioxide - SiO2)

Chalcedony (Pancawarna / Bacan / Red Chalcedony Agate Ring) (Silicon dioxide (SiO2)) — gemstone

Chalcedony (Pancawarna / Bacan / Red Chalcedony Agate Ring)

Silicon dioxide (SiO2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Yellow Chalcedony (or Yellow Jasper / Agate) (Silicon Dioxide (SiO2)) — mineral

Yellow Chalcedony (or Yellow Jasper / Agate)

Silicon Dioxide (SiO2)

Chalcedony (Tumbled) (Cryptocrystalline Quartz (SiO2)) — mineral

Chalcedony (Tumbled)

Cryptocrystalline Quartz (SiO2)

Gray Chalcedony Gemstone (Chalcedony (SiO2)) — mineral

Gray Chalcedony Gemstone

Chalcedony (SiO2)

Blue Chalcedony (Chalcedony (SiO2)) — mineral

Blue Chalcedony

Chalcedony (SiO2)

Pyrite and Quartz Agglomerate (Iron Sulfide (FeS2) with Silicon Dioxide (SiO2)) — mineral

Pyrite and Quartz Agglomerate

Iron Sulfide (FeS2) with Silicon Dioxide (SiO2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Serpentinite (Serpentinite (Mg3Si2O5(OH)4)) — metamorphic

Serpentinite

Serpentinite (Mg3Si2O5(OH)4)

Glaucophane Schist (Blueschist) (Glaucophane Schist) — metamorphic

Glaucophane Schist (Blueschist)

Glaucophane Schist

Shale (Argillite / Shaly Mudstone) — sedimentary

Shale

Argillite / Shaly Mudstone

Greenschist / Chloritaform Schist (Chlorite Schist (Group of Silicate Minerals)) — metamorphic

Greenschist / Chloritaform Schist

Chlorite Schist (Group of Silicate Minerals)

Basalt (Weathered River Pebble) (Extrusive Igneous Rock) — igneous

Basalt (Weathered River Pebble)

Extrusive Igneous Rock

Corundum (Sapphire and Ruby) (Aluminum Oxide (Al2O3)) — mineral

Corundum (Sapphire and Ruby)

Aluminum Oxide (Al2O3)

Labradorite ((Ca,Na)(Al,Si)4O8) — mineral

Labradorite

(Ca,Na)(Al,Si)4O8

Bornite (Peacock Ore) (Bornite (Cu5FeS4)) — mineral

Bornite (Peacock Ore)

Bornite (Cu5FeS4)

Blue Sapphire Crystal (Rough) (Corundum (Aluminum Oxide, Al2O3)) — mineral

Blue Sapphire Crystal (Rough)

Corundum (Aluminum Oxide, Al2O3)

Serpentinite (probable) (Serpentinite, dominated by serpentine-group minerals (Mg₃Si₂O₅(OH)₄), with dark magnetite or chromite and pale carbonate/talc possible) — metamorphic

Serpentinite (probable)

Serpentinite, dominated by serpentine-group minerals (Mg₃Si₂O₅(OH)₄), with dark magnetite or chromite and pale carbonate/talc possible

Serpentine (Serpentinite (group of hydrous magnesium iron phyllosilicate minerals)) — metamorphic

Serpentine

Serpentinite (group of hydrous magnesium iron phyllosilicate minerals)

Dyed Agate (Silicon Dioxide (SiO2) with artificial pigment) — sedimentary

Dyed Agate

Silicon Dioxide (SiO2) with artificial pigment

Polished green stone, likely serpentine or altered basalt (Serpentine-group minerals, chiefly Mg₃Si₂O₅(OH)₄; exact identification requires testing) — metamorphic

Polished green stone, likely serpentine or altered basalt

Serpentine-group minerals, chiefly Mg₃Si₂O₅(OH)₄; exact identification requires testing

Tumbled milky quartz (Quartz (silicon dioxide, SiO₂)) — mineral

Tumbled milky quartz

Quartz (silicon dioxide, SiO₂)

Serpentinite (Serpentinite; chiefly serpentine-group minerals (lizardite, chrysotile, antigorite), commonly with magnetite and minor talc) — metamorphic

Serpentinite

Serpentinite; chiefly serpentine-group minerals (lizardite, chrysotile, antigorite), commonly with magnetite and minor talc

Calcite (Calcite (CaCO₃, Calcium Carbonate)) — Mineral

Calcite

Calcite (CaCO₃, Calcium Carbonate)

Heliotrope (Bloodstone) (Chalcedony quartz variety (SiO2) with hematite or jasper inclusions) — mineral

Heliotrope (Bloodstone)

Chalcedony quartz variety (SiO2) with hematite or jasper inclusions

Carnelian (SiO2 (Variety of Chalcedony)) — gemstone

Carnelian

SiO2 (Variety of Chalcedony)

Chalcedony / Quartz Nodule (Agate Pebble) (Silicon Dioxide (SiO2)) — mineral

Chalcedony / Quartz Nodule (Agate Pebble)

Silicon Dioxide (SiO2)

Chalcedony (Silicon Dioxide (SiO2)) — mineral

Chalcedony

Silicon Dioxide (SiO2)

Cinnabar on Matrix with Quartz (Mercury(II) sulfide (HgS) on Quartz (SiO2) and Basalt/Siltstone matrix) — mineral

Cinnabar on Matrix with Quartz

Mercury(II) sulfide (HgS) on Quartz (SiO2) and Basalt/Siltstone matrix

Garnet Schist (Almandine-Mica Schist) — metamorphic

Garnet Schist

Almandine-Mica Schist

Schist (Schist) — metamorphic

Schist

Schist