Chalcedony (Agate/Chert variety)
Silicon Dioxide (SiO2)
Category
Browse sedimentary (chemical) specimens identified by the Rock Identifier community.
Chalcedony (Agate/Chert variety)
Silicon Dioxide (SiO2)
Chert (Flint)
Chert (SiO2)
Chert (Basanite / Jasperoid)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert
Cryptocrystalline Quartz (SiO2)
Yellow Chert
Microcrystalline Quartz (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
Chert (often called Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Agate
Chalcedony (SiO2) with impurities
Chert (Banded)
Microcrystalline Quartz (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Quartz (Milky/Crystalline fragment)
Silicon Dioxide (SiO2)
Bauxite
Bauxite (Al2O3·nH2O)
Bauxite
AlOx(OH)3-2x (mixture of Gibbsite, Boehmite, and Diaspore)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (Arrowhead/Projectile Point)
Microcrystalline quartz (SiO2)
Crushed Limestone
Calcium Carbonate (CaCO3)
Yellow Ochre / Limonite
Hydrated ferric oxide (FeO(OH)·nH2O)
Chert (Flint)
Chert (Silicon Dioxide, SiO2)
Chert (Yellow Jasper)
Microcrystalline Quartz (SiO2)
Chert (Jasper)
Silicon dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz and Mixed Sedimentary Rocks
Silicon Dioxide (SiO2) mixed with various clastic sedimentary lithologies
Chert Arrowhead
Microcrystalline Quartz (SiO2)
Chert Nodule
Microcrystalline Quartz (SiO2)
Chert (Jasper/Flint variant)
Silicon Dioxide (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (River Pebble)
Microcrystalline silica (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Limestone
Calcium Carbonate (CaCO3)
Bauxite
Al2O3·2H2O (principally composed of gibbsite, boehmite, and diaspore)
Chert (Jasper/Flint variant)
Microcrystalline Quartz (SiO2)
Sandstone
Arenite (SiO2 based)
Garnet in Host Rock
Garnet Group (A3B2(SiO4)3)
Chert (Jasper-like Silicate)
Microcrystalline Quartz (SiO2)
Chert Arrowhead
Cryptocrystalline Quartz (SiO2)
Calcite
Calcium Carbonate (CaCO3)
Yellow Calcite
Calcium Carbonate (CaCO3)
Orange Calcite
Calcium Carbonate (CaCO3)