Rock Identifier

Category

Sedimentary (Fossil)

Browse sedimentary (fossil) specimens identified by the Rock Identifier community.

Learn about Sedimentary (Fossil) in the encyclopedia

Fossil Opal

Fossiliferous Limestone

Fossiliferous Limestone

Bone Opal

Turritella Jasper

Turritella Agate

Turritella Agate

Amber

Petrified Wood

Diatomite

Guano

Conglomerate

Jet

Diatomaceous Earth

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

Slate

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

Amber (with potentially inclusions) (Succinite (Fossilized Tree Resin)) — Mineraloid

Amber (with potentially inclusions)

Succinite (Fossilized Tree Resin)

Amber (Succinite (specifically for Baltic amber); Complex mixture of organic compounds (C10H16O)) — Organic Mineraloid

Amber

Succinite (specifically for Baltic amber); Complex mixture of organic compounds (C10H16O)

Organic Mineraloid

Amber (Succinite (specifically for Baltic amber); approximate formula C10H16O) — Mineraloid

Amber

Succinite (specifically for Baltic amber); approximate formula C10H16O

Amber (Succinurite (C10H16O)) — mineraloid

Amber

Succinurite (C10H16O)

Vesicular volcanic rock, likely pumice (Pumice; highly vesicular volcanic glass, commonly rhyolitic to dacitic in composition) — igneous

Vesicular volcanic rock, likely pumice

Pumice; highly vesicular volcanic glass, commonly rhyolitic to dacitic in composition

Burmese Amber (Burmite) (Burmite (C10H16O)) — mineraloid

Burmese Amber (Burmite)

Burmite (C10H16O)

Quartz Pebble (with Manganese dendrites/staining) (Silicon Dioxide (SiO2) with Manganese Oxide impurities) — mineral

Quartz Pebble (with Manganese dendrites/staining)

Silicon Dioxide (SiO2) with Manganese Oxide impurities

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Yellow tumbled/rough chalcedony, possibly citrine or dyed agate (Chalcedony (microcrystalline SiO₂), with yellow coloration likely from iron oxides; exact identification is uncertain from the photograph) — mineral

Yellow tumbled/rough chalcedony, possibly citrine or dyed agate

Chalcedony (microcrystalline SiO₂), with yellow coloration likely from iron oxides; exact identification is uncertain from the photograph

Quartzite Pebble (with possible inclusion) (Metamorphosed Quartz Sandstone (SiO2 with impurities)) — metamorphic

Quartzite Pebble (with possible inclusion)

Metamorphosed Quartz Sandstone (SiO2 with impurities)

Sandstone (Arenite or Sandstone) — Sedimentary Rock

Sandstone

Arenite or Sandstone

Sedimentary Rock

Petrified Wood (Silicified wood (Quartz/Chalcedony)) — Sedimentary

Petrified Wood

Silicified wood (Quartz/Chalcedony)

Shale (Shale (clastic sedimentary rock)) — Sedimentary

Shale

Shale (clastic sedimentary rock)

Weathered brown stone, likely basalt or iron-stained volcanic rock (Indeterminate; possibly vesicular basalt (mafic silicate rock)) — igneous

Weathered brown stone, likely basalt or iron-stained volcanic rock

Indeterminate; possibly vesicular basalt (mafic silicate rock)

Sandstone (Arenite (a specific type of sandstone with less than 15% matrix)) — Sedimentary rock

Sandstone

Arenite (a specific type of sandstone with less than 15% matrix)

Sedimentary rock

Moss Agate / Carnelian Agate (Silicon Dioxide (SiO2) with iron and manganese inclusions) — mineral

Moss Agate / Carnelian Agate

Silicon Dioxide (SiO2) with iron and manganese inclusions

Petrified Wood (Silicified Wood (SiO2)) — Mineral / Fossil

Petrified Wood

Silicified Wood (SiO2)

Mineral / Fossil

Shale or Argillite (Shale (fine-grained clastic sedimentary rock) or Argillite (low-grade metamorphic rock derived from shale)) — Sedimentary or Metamorphic (low grade)

Shale or Argillite

Shale (fine-grained clastic sedimentary rock) or Argillite (low-grade metamorphic rock derived from shale)

Sedimentary or Metamorphic (low grade)

Amber (Succinates (Fossilized Tree Resin)) — mineraloid

Amber

Succinates (Fossilized Tree Resin)

Amber (Copal) (Succinate (Fossilized Resin)) — mineraloid

Amber (Copal)

Succinate (Fossilized Resin)

Amber (Succinite (Fossilized Tree Resin)) — Organic Mineraloid

Amber

Succinite (Fossilized Tree Resin)

Organic Mineraloid

Amber (Succinite (specifically for Baltic amber); chemical formula approx. C10H16O) — Organic Gemstone (fossilized resin)

Amber

Succinite (specifically for Baltic amber); chemical formula approx. C10H16O

Organic Gemstone (fossilized resin)

Amber (Succinite (C10H16O)) — mineral

Amber

Succinite (C10H16O)

Dendritic Agate (Tree Agate) (Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions) — mineral

Dendritic Agate (Tree Agate)

Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions

Dendritic Quartz (Silicon Dioxide (SiO2) with Manganese Oxide inclusions) — mineral

Dendritic Quartz

Silicon Dioxide (SiO2) with Manganese Oxide inclusions

Sandstone (Sandstone (lithified sand)) — sedimentary

Sandstone

Sandstone (lithified sand)

Polished green moss agate cabochon (Moss agate: microcrystalline quartz (SiO₂) with included chlorite/actinolite or iron-manganese minerals) — mineral

Polished green moss agate cabochon

Moss agate: microcrystalline quartz (SiO₂) with included chlorite/actinolite or iron-manganese minerals

Polished dendritic agate or jasper (Microcrystalline quartz (SiO₂), likely chalcedony with manganese-oxide dendrites) — mineral

Polished dendritic agate or jasper

Microcrystalline quartz (SiO₂), likely chalcedony with manganese-oxide dendrites

Vesicular basalt (scoria-like volcanic rock) (Basalt, predominantly plagioclase + pyroxene ± olivine; vesicular variety) — igneous

Vesicular basalt (scoria-like volcanic rock)

Basalt, predominantly plagioclase + pyroxene ± olivine; vesicular variety

Dendritic Agate (Tumbled) (Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions) — mineral

Dendritic Agate (Tumbled)

Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions

Dendritic Agate (Silicon Dioxide (SiO2) with Manganese or Iron Oxide inclusions) — mineral

Dendritic Agate

Silicon Dioxide (SiO2) with Manganese or Iron Oxide inclusions

Pyrite (Pyrite (Iron Disulfide), FeS2) — Mineral

Pyrite

Pyrite (Iron Disulfide), FeS2

Tumbled black-and-white stone, likely dendritic agate or jasper (Cryptocrystalline quartz (SiO₂), possibly chalcedony with manganese-oxide dendrites) — mineral

Tumbled black-and-white stone, likely dendritic agate or jasper

Cryptocrystalline quartz (SiO₂), possibly chalcedony with manganese-oxide dendrites

Weathered volcanic rock, likely andesite or basalt (Fine-grained mafic to intermediate volcanic rock; probable andesite–basalt, compositionally dominated by plagioclase with pyroxene and possibly alteration minerals) — igneous

Weathered volcanic rock, likely andesite or basalt

Fine-grained mafic to intermediate volcanic rock; probable andesite–basalt, compositionally dominated by plagioclase with pyroxene and possibly alteration minerals

Vivianite (Vivianite, Fe2+3(PO4)2·8H2O) — mineral

Vivianite

Vivianite, Fe2+3(PO4)2·8H2O

Amber (Succinite (Fossilized Tree Resin)) — gemstone

Amber

Succinite (Fossilized Tree Resin)

Amber (Succinite (C10H16O)) — Mineraloid

Amber

Succinite (C10H16O)

Polished Mexican “Crazy Lace” agate tower (Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide inclusions) — mineral

Polished Mexican “Crazy Lace” agate tower

Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide inclusions

Milky Quartz with Dendritic Inclusions (Silicon Dioxide (SiO2) with impurities) — mineral

Milky Quartz with Dendritic Inclusions

Silicon Dioxide (SiO2) with impurities

Amber (Succinite (C10H16O)) — mineraloid

Amber

Succinite (C10H16O)

Pyrite (Pyrite (FeS2)) — Mineral

Pyrite

Pyrite (FeS2)