Pyrite (Fool's Gold) Cube
Iron Sulfide (FeS2)
Category
Browse sedimentary (artificial) specimens identified by the Rock Identifier community.
Pyrite (Fool's Gold) Cube
Iron Sulfide (FeS2)
Green Jasper
Silicon Dioxide (SiO2) with impurities
Flint (Chert)
Silicon Dioxide (SiO2)
Yellow Ochre / Limonite
Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)
Chert (and Jasper/Chalcedony mixture)
Microcrystalline Quartz (SiO2)
Optical Calcite (Iceland Spar)
Calcium Carbonate (CaCO3)
Sandstone
Arenite (primarily SiO2)
Sandstone (likely Graywacke or Arkose variant)
Clastic Sedimentary Rock (SiO2 with assorted lithic fragments)
Limestone (specifically Grainstone or Micrite)
Calcium Carbonate (CaCO3)
Sandstone
Clastic sedimentary rock (primarily Quartz and Feldspar)
Conglomerate
Conglomerate (Sedimentary rock containing rounded clasts)
Sandstone
Arenite (Siliclastic sedimentary rock, primarily SiO2)
Aragonite / Calcite Geode
Calcium Carbonate (CaCO3)
Dinosaur Fossil (Skull)
Dinosauria fossilis (Petrified Hydroxyapatite / Calcium Carbonate)
Chert (Beach Pebble)
Silicon Dioxide (SiO2)
Limestone (Ocherous)
Calcium Carbonate (CaCO3) with Iron Oxide (Limonite)
Chert (specifically Flint or Dark Chalcedony)
Silicon Dioxide (SiO2)
Sandstone
Arenite (primarily SiO2 - Silicon Dioxide)
Jasper (Banded Jasper)
Silicon Dioxide (SiO2) with impurities
Chert (Nodule)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Jasper Breccia
Silicon Dioxide (SiO2) with impurities
Petrified Wood
Silicified Wood (SiO2)
Picture Jasper
Silicon Dioxide (SiO2)
Quartzite Pebble (River Rock)
Quartzite (mainly SiO2)
Echinoid Fossil (Sea Urchin Fossil)
Echinoidea (phylum Echinodermata), often preserved as Calcite (CaCO3)
Sandstone (with Iron Oxide staining)
Arenite (primarily SiO2 with Fe2O3 staining)
Amber with inclusion
Amber (Fossilized Tree Resin)
Chert (Chert Pebble)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Quartzite Pebble
Metamorphic Quartz (SiO2)
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
Chert (Green variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Jasper/Flint variant)
Silicon Dioxide (SiO2)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Sandstone
Arenite (primarily Quartz, SiO2)
Citrine Geode
Citrine (Silicon Dioxide, SiO2)
Siltstone
Siltstone
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Sandstone (with Lichen)
Arenite (primarily SiO2)
Red Chert (Jasper)
Cryptocrystalline Quartz (SiO2) with iron oxide inclusions
Fossilized Horn Coral
Rugosa
Chert / Jasper
Microcrystalline Quartz (SiO2)