Anthropogenic (Human Made) Sedimentary Like Material

Jasper

Jasper (Silicon Dioxide, SiO2)

Chert Pebble (Flint)

Microcrystalline/Cryptocrystalline Quartz (SiO2)

Red Sandstone

Arenite (primarily SiO2 with hematite/iron oxide coating)

Satin Spar Selenite

Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)

Shale or Mudstone (Based on appearance)

Shale (fine-grained, laminated fissile sedimentary rock) / Mudstone (fine-grained, non-fissile sedimentary rock)

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Chert (with Quartz Vein)

Chert (Siliceous sedimentary rock, predominantly Microcrystalline Quartz SiO2)

Chert (variations include Flint or Jasper)

Silicon Dioxide (SiO2)

Coquina Limestone (Fossiliferous Limestone)

Calcareous bioclastic sedimentary rock (CaCO3)

Chert (White Chert/Flint)

Chert (Microcrystalline or Cryptocrystalline Quartz, SiO2)

Flagstone (Sandstone)

Clastic Sedimentary Rock (composed of quartz and feldspar)

Petrified Wood

Silicified Wood (primarily Quartz / Chalcedony: SiO2)

Red Jasper

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Desert Rose (Baryte or Gypsum Rose)

Baryte (BaSO4) or Gypsum (CaSO4·2H2O)

Ferruginous Sandstone (Iron-rich Sandstone)

Ferruginous Arenite

Travertine (Tufa)

Chemical Sedimentary Limestone (CaCO3)

Chert (specifically Flint or Common Opal/Chalcedony mix)

Microcrystalline Quartz (SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Sandstone (Ferruginous)

Ferruginous Sandstone (SiO2 with Fe2O3)

Red Jasper

Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)

Sandstone (Glacial Cobble)

Arenite / Sedimentary Rock (primarily SiO2)

Blue Cracked Quartz (Dyed Fire Crackle Quartz)

Silicon Dioxide (SiO2) with synthetic dye

Smoky Quartz

Smoky Quartz (Silicon Dioxide, SiO2)

Chert (Agate/Flint variant)

Microcrystalline Quartz (SiO2)

River Stone / Siltstone

Siltstone (composed of lithified silt)

Limonite (Yellow Ochre)

Limonite (an amorphous mixture of hydrated iron oxides, primarily FeO(OH)·nH2O)

Conglomerate

Conglomerate (Detrital sedimentary rock)

Ironstone Concretion / Limonite Node

Ferruginous Sedimentary Rock (composed primarily of Limonite FeO(OH)·nH2O and Goethite)

Smoky Quartz Cluster

Smoky Quartz (Silicon Dioxide - SiO2)

Chert (Quartz Variety)

Microcrystalline Silica (SiO2)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Red Sandstone (Siltstone/Mudstone variety)

Ferruginous Sandstone (composed primarily of Quartz with Hematite cementation)

Banded Gneiss (River Cobble)

Gneiss (a high-grade metamorphic rock)

Jasper (Petrified Wood Variety)

Silicon Dioxide (SiO2)

Rough Diamond

Diamond (pure Carbon, C)

Jasper with Manganese Dendrites

Silicon Dioxide (SiO2) with Oxide Mineral Inclusions

Chert (Grey/Black variety)

Chert (Silicon Dioxide, SiO2)

Petrified Wood

Silicified wood (Quartz/Chalcedony - SiO2)

Green Chert (Jasper)

Silicon Dioxide (SiO2)

Ferruginous Conglomerate

Conglomerate with Iron-Oxide Matrix (SiO2 + Fe2O3/FeO(OH))

Bauxite

Bauxite (Mixture of Al(OH)3, AlO(OH), and Fe2O3)

Picture Jasper

Silicon Dioxide (SiO2) with impurities