Tufa
Calcareous Tufa (CaCO3)
Category
Browse anthropogenic material (man made sedimentary mimic) specimens identified by the Rock Identifier community.
Tufa
Calcareous Tufa (CaCO3)
Banded Chert (Ironstone/Jasper)
Cryptocrystalline Quartz (SiO2) with Iron Oxides
Laterite
Laterite (Ferricrete)
Travertine (Tufa)
Calcium Carbonate (CaCO3)
Jasper
Silicon Dioxide (SiO2)
Jasper Conglomerate (Puddingstone)
Siliceous Conglomerate (Quartz and Jasper clasts in a fine-grained matrix)
Limestone
Calcium Carbonate (CaCO3)
Brecciated Jasper
Silicon Dioxide (SiO2) with Hematite and Quartz inclusions
Jasper (specifically Fancy or Polychrome Jasper)
Silicon Dioxide (SiO2) - Chalcedony
Fancy Jasper (Agate/Chert mix)
Silicon Dioxide (SiO2) with impurities
Orange Calcite
Calcium Carbonate (CaCO3)
Chert (often called Flint or Jasper)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Red Sandstone (Siltstone/Mudstone variety)
Ferruginous Sandstone (composed primarily of Quartz with Hematite cementation)
Chert (Quartz Pebble)
Silicon Dioxide (SiO2)
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily Quartz - SiO2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Sandstone
Sandstone (clastic sedimentary rock, composed predominantly of sand-sized minerals or rock fragments)
Red Jasper
Quartz (Silicon Dioxide) with Iron Oxide impurities (Fe2O3)
Amber
Succinite
Pyrite
Iron Sulfide (FeS2)
Basalt River Stone
Basalt (Aphanitic Mafic Igneous Rock)
Chert (often called Flint or Jasper)
Microcrystalline silica (SiO2)
Chert (varietal: Flint/River Pebble)
Cryptocrystalline Quartz (SiO2)
Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
Chert (specifically Flint or Common Chert)
Silicon Dioxide (SiO2)
Chert (varieties include Flint and Jasper)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Red Jasper
Jasper (Silicon Dioxide, SiO2)
Banded Chert or Agate
Silicon Dioxide (SiO2)
Chert (Arrowhead Artifact)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (Iron-stained)
Chert (Microcrystalline Quartz, SiO2)
Banded Chert
Microcrystalline silicon dioxide (SiO2)
Green Kyanite
Kyanite (Al2SiO5)
Red Jasper
Red Jasper (variety of Chalcedony, SiO₂)
Green Calcite
Calcium Carbonate (CaCO3)
Sandstone
Arenite or Sandstone
Petrified Wood
Silicified Wood (SiO2)
Arkosic Sandstone
Arkose
Sandstone
Arenite (primarily Quartz SiO2)
Chert (Brown Variety)
Silicon dioxide (SiO2)
Chert (specifically a nodule with Chalcendony/Agate banding)
Microcrystalline Quartz (SiO2)
Chert (Yellow Jasper/Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Jasper)
Cryptocrystalline Quartz (SiO2)