Quartz (Clear/Crystalline)
Silicon Dioxide (SiO2)
Category
Browse sedimentary (chemical) specimens identified by the Rock Identifier community.
Quartz (Clear/Crystalline)
Silicon Dioxide (SiO2)
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Chert
Microcrystalline Quartz (SiO2)
Bauxite
Bauxite (mixture of Hydrous Aluminum Oxides)
Quartz Pebble
Silicon Dioxide (SiO2)
Oolitic Limestone (Egg Stone)
Oolite (Chemical sedimentary rock, primarily CaCO3)
Limestone Cobble
Carbonate Rock (CaCO3)
Weathered iron-rich rock, possibly laterite or limonite-bearing sandstone
Iron oxides/hydroxides, chiefly limonite/goethite (FeO(OH)·nH₂O), with a probable silicate or clay matrix
Limestone
Calcium Carbonate (CaCO3)
Bauxite
Bauxite (Al(OH)3, γ-AlO(OH), and α-AlO(OH))
Bauxite
Bauxite (mixture of hydrous aluminum oxides: Al(OH)3 & AlO(OH))
Quartz Sand
Silicon Dioxide (SiO2)
Chert (Jasper)
Silicon Dioxide (SiO2)
Bauxite (Aluminum Ore)
Hydrated aluminum oxides, primarily Al(OH)3, AlO(OH)
Chert
Microcrystalline Quartz (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartz Sand
Silicon Dioxide (SiO2)
Chert (Yellow Jasper/Honey Chert)
Silicon Dioxide (SiO2)
Yellow Calcite
Calcium Carbonate (CaCO3)
Quartz Pebble
Silicon Dioxide (SiO2)
Yellow Calcite
Calcium Carbonate (CaCO3)
Chert
Silicon dioxide (SiO2)
Chert (Jasper/Quartzite variant)
Silicon Dioxide (SiO2)
Chert Arrowhead (Jasper)
Chert (Cryptocrystalline Quartz, SiO2)
Red Jasper with Quartz
Opaque microcrystalline Quartz (SiO2) with Hematite inclusions
Chert (often called Flint)
Microcrystalline quartz (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Chert (Jasper/Chalcedony)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Silicon dioxide (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Green Calcite
Calcium Carbonate (CaCO3)
Chert Pebble
Microcrystalline Quartz (SiO2)
Yellow Calcite
Calcium Carbonate (CaCO3)
Calcite on Limestone
Calcium Carbonate (CaCO3)
Chert / Flint
Silicon dioxide (SiO2)
Chert (Flint / Chalcedony)
Silicon Dioxide (SiO2)
Jasper / Chert (Iron-stained Quartz)
SiO2 (Silicon Dioxide with Iron Oxide inclusions)
Chert (Yellow Jasper variant)
Silicon Dioxide (SiO2)
Limonite Ironstone
Goethite-Limonite concretion / Iron oxide
Chert (Jasper)
Silicon Dioxide (SiO2)