Chert (Flint variety)
Silicon Dioxide (SiO2)
Category
Browse sedimentary (chemical) specimens identified by the Rock Identifier community.
Chert (Flint variety)
Silicon Dioxide (SiO2)
Green Calcite
Calcium Carbonate (CaCO3)
Banded Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Sandstone (Ferruginous)
Arenite (SiO2 based with Fe2O3 banding)
Banded Chert
Microcrystalline Quartz (SiO2)
Travertine (Tufa)
Chemical Limestone (CaCO3)
Chert (Jasper/Flint variety)
Microcrystalline quartz (SiO2)
Limestone
Calcium Carbonate (CaCO3)
Travertine (Tufa)
Chemical Limestone (CaCO3)
Orange Calcite
Calcium Carbonate (CaCO3)
Chert (River Pebble)
Cryptocrystalline Quartz (SiO2)
Chert
Microcrystalline Quartz (SiO2)
Chert (often colloquially called Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Yellow Calcite
Calcium Carbonate (CaCO3)
Psilomelane (Black Hematite varietal)
Barium Manganese Oxide (Ba,H2O)2Mn5O10
Chert (Jasper)
Silicon Dioxide (SiO2)
Honey Calcite
Calcium Carbonate (CaCO3)
Chert (Flint)
Silicon Dioxide (SiO2)
Chert (often called Flint or Jasper if reddish)
Microcrystalline Quartz (SiO2)
Chert (Flint nodule)
Chert (SiO2)
Yellow Calcite
Calcium Carbonate (CaCO3)
Chert (with Manganese Oxide coating)
Microcrystalline Quartz (SiO2)
Fragmented Sedimentary Pebble
Clastic Sedimentary Specimen
Fordite
Anthropogenic paint-rock
Geode (Chert or Quartz Nodule)
Silicon Dioxide (SiO2)
Manganese Ore (Psilomelane/Pyrolusite)
Psilomelane ((Ba,H2O)2Mn5O10) and Pyrolusite (MnO2)
Glauconitic Sandstone
Glauconitic sandstone ((K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2)
Siltstone with Iron Staining
Siltstone
Siderite Concretion in Shale
Iron carbonate (FeCO3) in Mudstone/Shale matrix
Yellow Quartz Pebble
Silicon Dioxide (SiO2)
Fossiliferous Limestone
Biogenic Limestone (Calcium Carbonate, CaCO3)
Banded Sandstone (Liesegang Rings)
Arenite with Liesegang rings (SiO2/Fe2O3)
Chert (Jasper/Flint variety)
Sedimentary silica (SiO2)
Chert (Tan/Yellow variety)
Microcrystalline quartz (SiO2)
Red Jasper (Quartz)
Silicon Dioxide (SiO2) with Iron impurities
Chert (Jasper/Opaline variety)
Silicon Dioxide (SiO2)
Geode (Chert/Quartz)
Silicon Dioxide (SiO2)
Calcite
Calcium Carbonate (CaCO3)
Optical Calcite (Iceland Spar)
Calcite (CaCO3)
Calcite
Calcium Carbonate (CaCO3)
Orange Calcite
Calcium Carbonate (CaCO3)
Chert (var. Jasper)
Microcrystalline Quartz (SiO2)