Bauxite
Alumina ore (Mixture of Gibbsite, Boehmite, and Diaspore)
Category
Browse sedimentary (chemical) specimens identified by the Rock Identifier community.
Bauxite
Alumina ore (Mixture of Gibbsite, Boehmite, and Diaspore)
Chert (Jasper/Agate variety)
Silicon Dioxide (SiO2)
Chert Arrowhead (Projectile Point)
Chert (Cryptocrystalline Quartz, SiO2)
Banded Jasper
Silicate Mineral (Microcrystalline Quartz / SiO2)
Chert (Flint/Jasper variety)
Microcrystalline Quartz (SiO2)
Tiger Carving (Banded Onyx or Calcite)
Banded Calcite (CaCO3)
Orange Calcite
Calcium Carbonate (CaCO3)
Orange Calcite
Calcium Carbonate (CaCO3)
Orange Calcite
Calcium Carbonate (CaCO3)
Quartzite (or Chert/Flint gravel)
Quartzite (SiO2 with iron oxide inclusions)
Jasper
Silicon Dioxide (SiO2)
Chert (Flint/Novaculite)
Microcrystalline Quartz (SiO2)
Chert / Flint
Chert (SiO2)
Chert (Flint)
Cryptocrystalline Quartz (SiO2)
Chert
Microcrystalline silica (SiO2)
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
Banded Chert
Microcrystalline Quartz (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz (Chert/Quartzite variant)
Silicon Dioxide (SiO2)
Yellow Calcite
Calcium Carbonate (CaCO3)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Halite (Rock Salt)
Halite (Sodium Chloride, NaCl)
Chert (Tan/Yellow variety)
Microcrystalline quartz (SiO2)
Limestone (with possible Manganese oxide inclusions)
Sedimentary Calcium Carbonate (CaCO3)
White Quartz
Quartz (Silicon Dioxide, SiO2)
Banded Sedimentary Rock
Sedimentary rock with Liesegang banding
Chert (Jasper/Agate variety)
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartzite pebble with Mafic inclusions
Quartzite (SiO2)
Flint
Sedimentary cryptocrystalline quartz (SiO2)
Chert (with Calcite layering)
Silicon Dioxide (SiO2) with Calcium Carbonate (CaCO3)
Chert (Flint)
Microcrystalline quartz (SiO2)
Graphite
Graphite (Chemical Formula: C)
Banded Limestone
Calcareous sedimentary rock (CaCO3)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Bauxite
Al2O3·2H2O (Aluminum Hydroxide)
Chert Nodule
Chert / Microcrystalline Quartz (SiO2)
Chert with Quartz Veins
Microcrystalline silica (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Fossiliferous Limestone Pebble
Sedimentary Rock (CaCO3)
Light-colored limestone
Calcitic limestone; primarily calcium carbonate (CaCO₃), mineral calcite
Quartz pebble
Silicon dioxide (SiO2)