Rock Identifier

Category

Sedimentary (If Natural Jasper) Or Artificial (If Slag)

Browse sedimentary (if natural jasper) or artificial (if slag) specimens identified by the Rock Identifier community.

Learn about Sedimentary (If Natural Jasper) Or Artificial (If Slag) in the encyclopedia

Kambaba Jasper

Sea Sediment Jasper

Asphalt Rock

Chert

Tripolite

Diamond

Brecciated Jasper

Brecciated Jasper

Glauconitic Siltstone / Mudstone (Glauconitic Pelite) — sedimentary

Glauconitic Siltstone / Mudstone

Glauconitic Pelite

Chalcedony (Chalcedony (SiO2)) — mineral

Chalcedony

Chalcedony (SiO2)

Sandstone (likely Ferruginous) (Arenite (SiO2 based with Fe2O3/FeO(OH) cement)) — sedimentary

Sandstone (likely Ferruginous)

Arenite (SiO2 based with Fe2O3/FeO(OH) cement)

Sandstone (Arenite (with iron oxide cement)) — sedimentary

Sandstone

Arenite (with iron oxide cement)

Sandstone (Quartz-rich) (Arenite (composed mainly of SiO2)) — sedimentary

Sandstone (Quartz-rich)

Arenite (composed mainly of SiO2)

Green Jasper (Quartz (Silicon Dioxide, SiO2) with iron silicate inclusions) — sedimentary

Green Jasper

Quartz (Silicon Dioxide, SiO2) with iron silicate inclusions

Chalcedony Pebble (Cryptocrystalline Quartz (SiO2)) — mineral

Chalcedony Pebble

Cryptocrystalline Quartz (SiO2)

Jasper River Stone (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Jasper River Stone

Silicon Dioxide (SiO2) with iron oxide inclusions

Red Jasper (Silicon Dioxide (SiO2)) — sedimentary

Red Jasper

Silicon Dioxide (SiO2)

Red Jasper or Chert (Jasper (SiO2, a variety of chalcedony with iron oxide impurities), Chert (SiO2)) — sedimentary

Red Jasper or Chert

Jasper (SiO2, a variety of chalcedony with iron oxide impurities), Chert (SiO2)

Red jasper (likely rough jasper/chert) (Microcrystalline quartz (SiO₂), commonly colored by iron oxides) — mineral

Red jasper (likely rough jasper/chert)

Microcrystalline quartz (SiO₂), commonly colored by iron oxides

Chalcedony (Silicon Dioxide (SiO2)) — mineral

Chalcedony

Silicon Dioxide (SiO2)

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

Red Jasper with Quartz

Microcrystalline Quartz (SiO2) with Hematite inclusions

Weathered sandstone or iron-stained sedimentary rock (Likely quartz-rich sandstone; exact identification is uncertain from the photograph) — sedimentary

Weathered sandstone or iron-stained sedimentary rock

Likely quartz-rich sandstone; exact identification is uncertain from the photograph

Chert / Chalcedony Pebble (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert / Chalcedony Pebble

Cryptocrystalline Quartz (SiO2)

Quartz (likely Herkimer Diamond style) (Silicon Dioxide (SiO2)) — mineral

Quartz (likely Herkimer Diamond style)

Silicon Dioxide (SiO2)

Banded Slate (Slate (Metamorphosed Siltstone/Mudstone)) — metamorphic

Banded Slate

Slate (Metamorphosed Siltstone/Mudstone)

Shale (Shale (Lutite)) — sedimentary

Shale

Shale (Lutite)

Shale (Shale (composition varies: primarily clay minerals and quartz)) — sedimentary

Shale

Shale (composition varies: primarily clay minerals and quartz)

Yellow Jasper (Silicon Dioxide (SiO2) with iron inclusions) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2) with iron inclusions

Jasper (likely red/brown jasper) (Microcrystalline quartz/chalcedony, SiO₂, colored mainly by iron oxides) — mineral

Jasper (likely red/brown jasper)

Microcrystalline quartz/chalcedony, SiO₂, colored mainly by iron oxides

Druzy Chalcedony (Agate Geode) (Silica (SiO2) - Cryptocrystalline Quartz with druzy macrocrystalline quartz) — mineral

Druzy Chalcedony (Agate Geode)

Silica (SiO2) - Cryptocrystalline Quartz with druzy macrocrystalline quartz

Aventurine Quartz (Silicon Dioxide (SiO2) with Fuchsite inclusions) — metamorphic

Aventurine Quartz

Silicon Dioxide (SiO2) with Fuchsite inclusions

Smooth river pebble (Indeterminate lithology; likely fine-grained quartz-rich sandstone, siltstone, or weathered chert) — sedimentary

Smooth river pebble

Indeterminate lithology; likely fine-grained quartz-rich sandstone, siltstone, or weathered chert

Common River Pebbles and Stones (Mixed natural stream gravel / siliciclastic pebbles) — sedimentary

Common River Pebbles and Stones

Mixed natural stream gravel / siliciclastic pebbles

Red Jasper (Brecciated Jasper) (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Red Jasper (Brecciated Jasper)

Silicon Dioxide (SiO2) with iron oxide inclusions

Chert (Flint) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Chert (Flint)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Moqui Marble (Hematite-Goethite Concretion) — sedimentary

Moqui Marble

Hematite-Goethite Concretion

Amethyst and Calcite collection (Silicon Dioxide (SiO2) and Calcium Carbonate (CaCO3)) — mineral

Amethyst and Calcite collection

Silicon Dioxide (SiO2) and Calcium Carbonate (CaCO3)

Quartz (Smoky Quartz / Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Quartz (Smoky Quartz / Chalcedony)

Silicon Dioxide (SiO2)

African Turquoise (Jasper) (Polychrome African Jasper (often marketed as 'African Turquoise' due to its color, but it is not true turquoise)) — Rock

African Turquoise (Jasper)

Polychrome African Jasper (often marketed as 'African Turquoise' due to its color, but it is not true turquoise)

Sandstone (Quartzose Sandstone) (Arenite (SiO2 based)) — sedimentary

Sandstone (Quartzose Sandstone)

Arenite (SiO2 based)

Ironstone Concretion / Limonite-stained Siltstone (Ironstone (primarily Limonite FeO(OH)·nH2O and Siltstone)) — sedimentary

Ironstone Concretion / Limonite-stained Siltstone

Ironstone (primarily Limonite FeO(OH)·nH2O and Siltstone)

Banded Black Agate (Silicon Dioxide (SiO2)) — mineral

Banded Black Agate

Silicon Dioxide (SiO2)

Mixed River Pebbles (Clastic Sedimentary Alluvial Deposit / Polymictic Conglomerate Clasts) — sedimentary

Mixed River Pebbles

Clastic Sedimentary Alluvial Deposit / Polymictic Conglomerate Clasts

Amber (Succinite (fossilized tree resin)) — mineral

Amber

Succinite (fossilized tree resin)

Coarse-grained Jasper or Jasper Conglomerate (Silicon Dioxide with Iron Oxide (SiO2) + Fe2O3) — sedimentary

Coarse-grained Jasper or Jasper Conglomerate

Silicon Dioxide with Iron Oxide (SiO2) + Fe2O3

Ironstone Concretion (Ironstone (Siderite/Goethite/Hematite matrix)) — sedimentary

Ironstone Concretion

Ironstone (Siderite/Goethite/Hematite matrix)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Sandstone (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone

Arenite (composed primarily of SiO2)

Ocean Jasper (Orbicular Jasper) (Spherulitic Chalcedony (SiO2)) — sedimentary

Ocean Jasper (Orbicular Jasper)

Spherulitic Chalcedony (SiO2)

Ocean Jasper (Orbicular Jasper) (Spherulitic Chalcedony (SiO2)) — sedimentary

Ocean Jasper (Orbicular Jasper)

Spherulitic Chalcedony (SiO2)