Black Chert
Microcrystalline Quartz (SiO2)
Category
Browse sedimentary (physico chemical) specimens identified by the Rock Identifier community.
Black Chert
Microcrystalline Quartz (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Limonite pseudo-concretion (Ironstone)
Limonite (FeO(OH)·nH2O) / Goethite
Calcite
Calcium Carbonate (CaCO3)
Chert (Yellow Jasper)
Microcrystalline Quartz (SiO2)
Chert Arrowhead
Cryptocrystalline Quartz (SiO2)
Calcite
Calcium Carbonate (CaCO3)
Yellow Calcite
Calcium Carbonate (CaCO3)
Orange Calcite
Calcium Carbonate (CaCO3)
Chert
Microcrystalline Quartz (SiO2)
Chert (Jasper/Flint)
Microcrystalline Quartz (SiO2)
Limonite Concretion (Ironstone)
Limonite (Hydrated Iron(III) Oxide-Hydroxide, FeO(OH)·nH2O)
Banded Calcite (Mexican Onyx)
Calcium Carbonate (CaCO3)
Blue Calcite
Calcium Carbonate (CaCO3)
Chert (Flint)
Chert (SiO2)
Chert / Jasper
Silicon Dioxide (SiO2)
Chert / Jasper
Silicon Dioxide (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (often called Flint in various colors)
Silicon Dioxide (SiO2)
Chert (Flint)
Chert (Microcrystalline or cryptocrystalline Silica, SiO2)
Chert / Flint
Microcrystalline or cryptocrystalline quartz (SiO2)
Yellow Calcite
Calcium Carbonate (CaCO3)
Calcite
Calcium Carbonate (CaCO3)
Green Calcite
Calcium Carbonate (CaCO3)
Chert (Flint variety)
Silicon Dioxide (SiO2)
Blue Calcite
Calcium Carbonate (CaCO3)
Banded Chert
Microcrystalline Quartz (SiO2)
Hematite
Iron(III) oxide (Fe2O3)
Optical Calcite (Iceland Spar)
Calcite (Calcium Carbonate, CaCO3)
Chert / Flint
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
Sandstone with Iron Oxide
Arenite (SiO2 with Fe2O3 inclusions)
Limestone
Calcium Carbonate (CaCO3)
Clear Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Chert (often called Flint when dark)
Sedimentary cryptocrystalline quartz (SiO2)
Rough Quartz (Alluvial Pebbles)
Silicon Dioxide (SiO2)
Quartz (Milky/Clear Quartz)
Silicon Dioxide (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert / Flint
Chert (Microcrystalline Quartz, SiO2)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)