Limestone
Sedimentary Rock (Primarily Calcium Carbonate, CaCO3)
Category
Browse sedimentary (fossilized organic remains) specimens identified by the Rock Identifier community.
Limestone
Sedimentary Rock (Primarily Calcium Carbonate, CaCO3)
Chert
Microcrystalline Quartz (SiO2)
Chert (Beach Pebble)
Microcrystalline Quartz (SiO2)
Chert / Jasper
Silicon Dioxide (SiO2)
Chert Pebble
Chert (Silicon Dioxide, SiO2)
Chert (Green variety)
Silicon Dioxide (SiO2)
Chert (including Flint and Jasper variants)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Micro-crystalline Quartz Pebble (Chert)
Silicon dioxide (SiO2)
Fossiliferous Limestone (Coquina)
Calcite (CaCO3) with Bioclastic inclusions
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
Chert (often called Flint or Jasper)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (often called Flint)
Microcrystalline Quartz (SiO2)
Chert (with potential fossil inclusion)
Microcrystalline Quartz (SiO2)
Limestone with Fossil inclusions
Fossiliferous Limestone (CaCO3)
Amber
Succinite (a specific high-quality amber from the Baltic)
Chert (Flint)
Chert (Cryptocrystalline Silica, SiO2)
Chert (Gravel)
Chert (Microcrystalline Silicon Dioxide, SiO2)
Chert Pebble
Microcrystalline Quartz (SiO2)
Chert (often called Flint in dark varieties)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Jasper)
Sedimentary Cryptocrystalline Quartz (SiO2)
Coal (most likely Bituminous or Anthracite)
Bituminous Coal (Grade of Coal), Anthracite (Grade of Coal)
Chert (Arrowhead Shard)
Microcrystalline silica (SiO2)
Chert (Jasper/Common Opal mix)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Chert (Jasper type)
Microcrystalline Quartz (SiO2)
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
Chert (Jasper type)
Microcrystalline Quartz (SiO2)
Limestone with Chert or Siltstone bands
Sedimentary carbonate rock (CaCO3) often with siliceous impurities
Chert (Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (Yellow Jasper variant)
Silicon Dioxide (SiO2)
Chert (Yellow/Brown variety)
Chert (SiO2)
Chert / Jasper
Cryptocrystalline Silica (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline Quartz or Cryptocrystalline Silica (SiO2)
Chert (Basanite / Flint variety)
Microcrystalline Quartz (SiO2)
Chert (Jasper/Common Chert Pebble)
Microcrystalline Quartz (SiO2)
Chert (Basanite / Jasper)
Microcrystalline quartz (SiO2)
Chert (Jasper)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Petrified Wood
Silicified wood (Quartz/Chalcedony replacement of cellulose)
Chert (Jasper/Chalcedony)
Microcrystalline Quartz (SiO2)
Chert (Jasper)
Microcrystalline Quartz (SiO2)