Green Chert
Microcrystalline Quartz (SiO2)
Category
Browse sedimentary (artificial) specimens identified by the Rock Identifier community.
Green Chert
Microcrystalline Quartz (SiO2)
Chert (and Petrified Wood)
Silicon Dioxide (SiO2)
Chert (specifically Jasper or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Sandstone with Liesegang Rings
Arenite with secondary Iron oxide (Limonite/Goethite) precipitation
Red Jasper (possibly Chert/Argillite)
Jasper (SiO2) with iron oxide inclusions
Ironstone (Limonitic Concretion)
Limonite (FeO(OH)·nH2O) with Goethite and Hematite inclusions
Ironstone Concretion (Iron-rich Mudstone)
Siderite / Geothite concretion (FeCO3 / FeO(OH))
Amber Chert (Jasper)
Microcrystalline Quartz (SiO2)
Jasper
Silicon dioxide (SiO2) with iron oxide impurities
Chert
Microcrystalline Quartz (SiO2)
Chert (varieties: Flint or Chalcedony)
Microcrystalline silica (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Chalcedony (Botryoidal Agate)
Silicon Dioxide (SiO2)
Chert (specifically Flint or Common Opal/Chalcedony mix)
Microcrystalline Quartz (SiO2)
Chalcedony (Yellow Agate/Chert)
Silicon Dioxide (SiO2)
Shungite
Non-crystalline carbon (high-carbon metamorphic rock)
Kyanite in Quartz
Kyanite (Al2SiO5) with Quartz (SiO2) matrix
Almandine Garnet
Iron aluminum silicate - Fe3Al2(SiO4)3
Rhodochrosite
Manganese carbonate (MnCO3)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Yellow Jasper
Silicon Dioxide (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Carnelian
Carnelian (SiO2)
Marble
Recrystallized Calcite (CaCO3) / Marble
Coprolite
Coprolite
Pyrite
Iron Sulfide (FeS2)
Barite (Desert Rose or Cockscomb variety)
Barium Sulfate (BaSO4)
Pyrite
Iron Sulfide (FeS2)
Clear Quartz (Carved Merkaba)
Silicon Dioxide (SiO2)
Orpiment
Orpiment (As2S3)
Chalcedony (Common Agate pebble)
Silicon Dioxide (SiO2)
Blue Calcite
Calcium Carbonate (CaCO3)
Yellow Calcite
Calcium Carbonate (CaCO3)
Chert (Flint)
Chert (SiO2)
Blue Chalcedony
Silicon Dioxide (SiO2)
Carnelian
SiO2 (Chalcedony with iron oxide impurities)
Quartz (Milk Quartz / Massive Quartz)
Silicon Dioxide (SiO2)
Chert (Nodule)
Cryptocrystalline Quartz (SiO2)
Flint
Chert (Silicon dioxide, SiO2)
Gold
Native Gold (Au)
Chert (Chalcedony/Agate variety)
Silicon Dioxide (SiO2)
Garnet (specifically Almandine)
Almandine (Fe3Al2(SiO4)3)