Chert (Flint)
Microcrystalline Quartz (SiO2)
Category
Browse sedimentary (man made composite) specimens identified by the Rock Identifier community.
Chert (Flint)
Microcrystalline Quartz (SiO2)
Red Sandstone
Arenite (with Iron Oxide / Hematite staining)
Marble (Sculpted Statue)
Metamorphic Limestone (composed primarily of Calcite, CaCO3)
Sandstone (with iron staining)
Quartz Arenite / Ferruginous Sandstone
White Marble
Recrystallized Calcite (CaCO3)
Chert (Jasper/Agate variety)
Microcrystalline Quartz (SiO2)
Jasper (Iron-rich Chalcedony)
Jasper (Microcrystalline Silicon Dioxide, SiO2 plus iron oxide impurities)
Diamond
Carbon (C)
Aura Quartz / Rainbow Aura Quartz
Silicon Dioxide (SiO2) with metallic vapor coating
Diamond
Carbon (C)
Corundum (Pink Sapphire / Ruby)
Al2O3 (Aluminum Oxide)
Diamond (in a jewelry setting)
Carbon (C)
Chert (Flint)
Chert (Microcrystalline Quartz, SiO2)
Chert (Yellow Jasper/Flint)
Chert (Microcrystalline Silicon Dioxide, SiO2)
Pyrulite (Pyrite / Chalcopyrite)
Iron Sulfide (FeS2) or Copper Iron Sulfide (CuFeS2)
Red Chert (Jasper)
Cryptocrystalline Quartz (SiO2) with iron oxide inclusions
Sea Shell (Fighting Conch Fragment)
Calcium Carbonate (CaCO3) - Strombus alatus fragment
Coquina / Fossiliferous Limestone
Coquina (composed primarily of Calcium Carbonate / CaCO3)
Quartz (Microcrystalline/Chert)
Silicon Dioxide (SiO2)
Chert
Microcrystalline quartz (SiO2)
Coal (Anthracite / Bituminous)
Organic Sedimentary Rock (Carbon-based)
Chert (specifically White Chert or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert
Microcrystalline Quartz (SiO2)
Chert
Microcrystalline Quartz (SiO2)
Chert
Microcrystalline quartz (SiO2)
Chert
Microcrystalline quartz (SiO2)
Chert (Chalcedony/Agate)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (Arrowhead Shard)
Microcrystalline silica (SiO2)
Chert
Microcrystalline Silicon Dioxide (SiO2)
Banded Chert
Microcrystalline Quartz (SiO2)
Chert (Jasper variation)
Microcrystalline Quartz (SiO2)
Petrified Wood
Silicified Wood (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Flint (or Chert)
Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Silicon dioxide (SiO2)
Crinoid Fossil in Limestone
Crinoid columnal (Class Crinoidea) in biomicrite
Sandstone
Arenite
Flint (or Chert with cortex)
Silicon dioxide (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (with Desert Varnish/Iron Stain)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)