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

Kambaba Jasper (Crocodile Jasper) (Stromatolite (Fossilized Algae within Microcrystalline Quartz), SiO2) — sedimentary

Kambaba Jasper (Crocodile Jasper)

Stromatolite (Fossilized Algae within Microcrystalline Quartz), SiO2

Banded Jasper (Carnelian Jasper) (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — sedimentary

Banded Jasper (Carnelian Jasper)

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Polychrome Jasper (Desert Jasper) (Silicon Dioxide (SiO2) with iron and mineral inclusions) — sedimentary

Polychrome Jasper (Desert Jasper)

Silicon Dioxide (SiO2) with iron and mineral inclusions

Jasper (Green Jasper/Chert) (Silicon Dioxide (SiO2)) — sedimentary

Jasper (Green Jasper/Chert)

Silicon Dioxide (SiO2)

Kambaba Jasper (Crocodile Jasper) (Stromatolitic Rhyolite/Jasper (SiO2)) — sedimentary

Kambaba Jasper (Crocodile Jasper)

Stromatolitic Rhyolite/Jasper (SiO2)

Red Jasper (Banded Jasper) (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Red Jasper (Banded Jasper)

Jasper (Silicon Dioxide, SiO2)

Jasper (Imperial Jasper style) (Silicon Dioxide (SiO2) with impurities) — sedimentary

Jasper (Imperial Jasper style)

Silicon Dioxide (SiO2) with impurities

Limonite Concretion (FeO(OH)·nH2O (Hydrated Iron Oxide)) — sedimentary

Limonite Concretion

FeO(OH)·nH2O (Hydrated Iron Oxide)

Red Jasper with Quartz (Silicon Dioxide (SiO2)) — sedimentary

Red Jasper with Quartz

Silicon Dioxide (SiO2)

River Cobble (Sandstone / Greywacke) (Sedimentary Rock (predominantly Quartz, Feldspar, Lithic fragments)) — sedimentary

River Cobble (Sandstone / Greywacke)

Sedimentary Rock (predominantly Quartz, Feldspar, Lithic fragments)

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

Gray Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Gray Limestone

Calcium Carbonate (CaCO3)

Sandstone (Ferruginous) (Arenite with Iron-Oxide Cement) — sedimentary

Sandstone (Ferruginous)

Arenite with Iron-Oxide Cement

Ironstone Concretion (Pot Stone) (Siderite or Limonite Concretion (FeCO3 or FeO(OH)·nH2O)) — sedimentary

Ironstone Concretion (Pot Stone)

Siderite or Limonite Concretion (FeCO3 or FeO(OH)·nH2O)

Coquina (Coquina (Bioclastic Limestone)) — sedimentary

Coquina

Coquina (Bioclastic Limestone)

Tumbled Mixed Gemstones and Rocks (Various mineral species including quartz (SiO2) and silicate minerals) — mineral

Tumbled Mixed Gemstones and Rocks

Various mineral species including quartz (SiO2) and silicate minerals

Ironstone / Hematite Concretion (Iron oxide / Fe2O3) — sedimentary

Ironstone / Hematite Concretion

Iron oxide / Fe2O3

Green Aventurine (Silicon Dioxide (SiO2) with Chromium-bearing Fuchsite) — mineral

Green Aventurine

Silicon Dioxide (SiO2) with Chromium-bearing Fuchsite

Green Fluorite (likely synthetic or heat-treated for jewelry) (Calcium Fluoride (CaF2)) — mineral

Green Fluorite (likely synthetic or heat-treated for jewelry)

Calcium Fluoride (CaF2)

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

Chert (Jasper variety)

Microcrystalline Quartz (SiO2)

Picture Jasper (SiO2) — Mineral/Sedimentary

Picture Jasper

SiO2

Mineral/Sedimentary

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

$Sandstone (with prominent jointing/fractures) (Arenite (composed primarily of SiO2)) — sedimentary$

Sandstone (with prominent jointing/fractures)

Arenite (composed primarily of SiO2)

Red Breccia Jasper (Silicon Dioxide (SiO2) with hematite and various mineral inclusions) — sedimentary

Red Breccia Jasper

Silicon Dioxide (SiO2) with hematite and various mineral inclusions

Agate and Jasper (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Agate and Jasper

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Red Jasper (River Pebble) (Silicon Dioxide (SiO2) with hematite impurities) — sedimentary (microcrystalline quartz)

Red Jasper (River Pebble)

Silicon Dioxide (SiO2) with hematite impurities

sedimentary (microcrystalline quartz)

Banded Gneiss (Gneiss (High-grade regional metamorphic rock)) — metamorphic

Banded Gneiss

Gneiss (High-grade regional metamorphic rock)

Quartz heart (likely milky/included quartz) (Quartz, silicon dioxide (SiO₂)) — mineral

Quartz heart (likely milky/included quartz)

Quartz, silicon dioxide (SiO₂)

Tumbled yellow jasper or petrified wood fragment (Microcrystalline quartz (chalcedony), SiO₂, possibly iron-oxide-bearing jasper) — mineral

Tumbled yellow jasper or petrified wood fragment

Microcrystalline quartz (chalcedony), SiO₂, possibly iron-oxide-bearing jasper

Limonite (with Goethite/Hematite glaze) (Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)) — mineral

Limonite (with Goethite/Hematite glaze)

Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)

Brecciated Jasper (Polished) (Silicon Dioxide (SiO2) with Iron Oxide Impurities) — sedimentary

Brecciated Jasper (Polished)

Silicon Dioxide (SiO2) with Iron Oxide Impurities

Hag Stone (Perforated Flint or Chert) — sedimentary

Hag Stone

Perforated Flint or Chert

Red Sandstone (Quartzose Sandstone (primarily quartz grains cemented by iron oxides)) — sedimentary

Red Sandstone

Quartzose Sandstone (primarily quartz grains cemented by iron oxides)

Red Jasper (Silicon Dioxide (SiO2) with Hematite inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

Sandstone (Arenite (SiO2 based typically)) — sedimentary

Sandstone

Arenite (SiO2 based typically)

Blue Chalcedony (likely dyed) (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — mineral

Blue Chalcedony (likely dyed)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

Quartzite Pebble (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite Pebble

Metamorphic Quartzite (SiO2)

Polished black stone egg, probably black obsidian (Obsidian, a natural volcanic glass; composition primarily silica-rich glass (approximately SiO₂), with variable iron and other trace elements) — gemstone

Polished black stone egg, probably black obsidian

Obsidian, a natural volcanic glass; composition primarily silica-rich glass (approximately SiO₂), with variable iron and other trace elements

Halite (Halite (Sodium Chloride, NaCl)) — mineral

Halite

Halite (Sodium Chloride, NaCl)

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

Polished hematite-rich ironstone (Hematite (Fe₂O₃), likely mixed with magnetite and iron-rich jasper) — mineral

Polished hematite-rich ironstone

Hematite (Fe₂O₃), likely mixed with magnetite and iron-rich jasper

Tumbled Red Jasper (Silicon Dioxide (Microcrystalline Quartz), SiO2) — sedimentary

Tumbled Red Jasper

Silicon Dioxide (Microcrystalline Quartz), SiO2