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

Serpentinite (probable) (Serpentinite; chiefly serpentine-group minerals, commonly lizardite, chrysotile, or antigorite, with possible magnetite and relict olivine/pyroxene) — metamorphic

Serpentinite (probable)

Serpentinite; chiefly serpentine-group minerals, commonly lizardite, chrysotile, or antigorite, with possible magnetite and relict olivine/pyroxene

Colorless faceted gemstone, likely cubic zirconia (Synthetic cubic zirconia (zirconium dioxide, ZrO₂); identity is visual and not definitive) — gemstone

Colorless faceted gemstone, likely cubic zirconia

Synthetic cubic zirconia (zirconium dioxide, ZrO₂); identity is visual and not definitive

Serpentinite (likely) (Serpentinite, dominated by serpentine-group minerals (antigorite, lizardite, chrysotile), commonly with magnetite and minor chlorite/talc) — metamorphic

Serpentinite (likely)

Serpentinite, dominated by serpentine-group minerals (antigorite, lizardite, chrysotile), commonly with magnetite and minor chlorite/talc

Nephrite Jade (Tremolite-Actinolite solid solution Ca2(Mg,Fe)5Si8O22(OH)2) — metamorphic

Nephrite Jade

Tremolite-Actinolite solid solution Ca2(Mg,Fe)5Si8O22(OH)2

Marble (Metamorphic Limestone (CaCO3)) — metamorphic

Marble

Metamorphic Limestone (CaCO3)

Nephrite Jade (Ca2(Mg, Fe)5Si8O22(OH)2 (Magnesium-rich Tremolite-Actinolite)) — metamorphic

Nephrite Jade

Ca2(Mg, Fe)5Si8O22(OH)2 (Magnesium-rich Tremolite-Actinolite)

Green Aventurine (Silicon Dioxide with Fuchsite (SiO2)) — mineral

Green Aventurine

Silicon Dioxide with Fuchsite (SiO2)

Pyrite (Pyrite (FeS2)) — Mineral

Pyrite

Pyrite (FeS2)

Crazy Lace Agate (SiO2 (Microcrystalline Quartz / Chalcedony)) — gemstone

Crazy Lace Agate

SiO2 (Microcrystalline Quartz / Chalcedony)

Smoky Quartz (Silicon Dioxide (SiO2)) — gemstone

Smoky Quartz

Silicon Dioxide (SiO2)

Greenschist (Greenschist (composed primarily of Chlorite, Actinolite, and Epidote)) — metamorphic

Greenschist

Greenschist (composed primarily of Chlorite, Actinolite, and Epidote)

Peacock Ore (Bornite (Cu5FeS4)) — mineral

Peacock Ore

Bornite (Cu5FeS4)

Stichtite in Serpentinite (Atlantisite) (Mg6Cr2CO16(OH)16·4H2O in Mg3Si2O5(OH)4) — metamorphic

Stichtite in Serpentinite (Atlantisite)

Mg6Cr2CO16(OH)16·4H2O in Mg3Si2O5(OH)4

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

Muscovite Schist

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

Greenschist (Greenschist (composed of Chlorite, Actinolite, and Epidote)) — metamorphic

Greenschist

Greenschist (composed of Chlorite, Actinolite, and Epidote)

Rose Quartz (Silicon Dioxide (SiO2)) — mineral

Rose Quartz

Silicon Dioxide (SiO2)

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

Carnelian

Silicon Dioxide (Chalcedony variety), SiO2

Yellow Chalcedony (SiO2 (Silicon Dioxide)) — mineral

Yellow Chalcedony

SiO2 (Silicon Dioxide)

Carnelian Agate (Chalcedony (Silicon Dioxide, SiO2)) — mineral

Carnelian Agate

Chalcedony (Silicon Dioxide, SiO2)

Carnelian (SiO2 (Silicon Dioxide - Chalcedony variant)) — mineral

Carnelian

SiO2 (Silicon Dioxide - Chalcedony variant)

Jasper (or Chert) (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper (or Chert)

Microcrystalline Quartz (SiO2)

Marcasite on Agate / Sphalerite-Pyrite Agate Geode Slice (Marcasite (FeS2) / Pyrite on Quartz (SiO2)) — mineral

Marcasite on Agate / Sphalerite-Pyrite Agate Geode Slice

Marcasite (FeS2) / Pyrite on Quartz (SiO2)

Carnelian Ring (SiO2 (Variety of Chalcedony)) — gemstone

Carnelian Ring

SiO2 (Variety of Chalcedony)

Carnelian (Silicon Dioxide (Variety of Chalcedony, SiO2)) — gemstone

Carnelian

Silicon Dioxide (Variety of Chalcedony, SiO2)

Chalcedony (Common Opal or Agate variant) (Silicon dioxide (SiO2) with trace hydration) — mineral

Chalcedony (Common Opal or Agate variant)

Silicon dioxide (SiO2) with trace hydration

Blue Chalcedony (Cryptocrystalline Quartz (SiO2)) — mineral

Blue Chalcedony

Cryptocrystalline Quartz (SiO2)

Pyrite in Matrix (Iron Sulfide (FeS2)) — mineral

Pyrite in Matrix

Iron Sulfide (FeS2)

Chalcedony (Yellow Agate/Chert) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Yellow Agate/Chert)

Silicon Dioxide (SiO2)

Pyrite (Fool's Gold) (Iron Sulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Orpiment (Orpiment (As2S3)) — mineral

Orpiment

Orpiment (As2S3)

Carnelian (Carnelian (SiO2)) — mineral

Carnelian

Carnelian (SiO2)

Carnelian (SiO2 (Chalcedony with iron oxide impurities)) — mineral

Carnelian

SiO2 (Chalcedony with iron oxide impurities)

Chalcedony (Agate) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate)

Silicon Dioxide (SiO2)

Sodalite (Sodalite (Na4Al3Si3O12Cl)) — Mineral

Sodalite

Sodalite (Na4Al3Si3O12Cl)

Serpentinite (Serpentinite (composed primarily of minerals in the serpentine group: (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)) — metamorphic

Serpentinite

Serpentinite (composed primarily of minerals in the serpentine group: (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)

Sunstone (Plagioclase feldspar (with Copper or Hematite inclusions)) — mineral

Sunstone

Plagioclase feldspar (with Copper or Hematite inclusions)

Tumbled nephrite jade (likely) (Nephrite jade; fibrous amphibole aggregate, chiefly actinolite–tremolite, Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂) — metamorphic

Tumbled nephrite jade (likely)

Nephrite jade; fibrous amphibole aggregate, chiefly actinolite–tremolite, Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂

Staurolite (Staurolite (Fe2Al9O6(SiO4)4(O,OH)2)) — mineral

Staurolite

Staurolite (Fe2Al9O6(SiO4)4(O,OH)2)

Eclogite (Eclogite (High-pressure metamorphic rock)) — metamorphic

Eclogite

Eclogite (High-pressure metamorphic rock)

Nuummite (Nuummite (complex silicate composed of Anthophyllite and Gedrite, (Mg,Fe)7Si8O22(OH)2)) — metamorphic

Nuummite

Nuummite (complex silicate composed of Anthophyllite and Gedrite, (Mg,Fe)7Si8O22(OH)2)

Quartz with Mica (Gneissic or Pegmatitic origin) (Silicon Dioxide (SiO2) with Phyllosilicates (KAl2(AlSi3O10)(F,OH)2)) — metamorphic

Quartz with Mica (Gneissic or Pegmatitic origin)

Silicon Dioxide (SiO2) with Phyllosilicates (KAl2(AlSi3O10)(F,OH)2)