Chert (Green variety)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Category
Browse anthropogenic sedimentary style organic solid specimens identified by the Rock Identifier community.
Chert (Green variety)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (Smooth River Pebble)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (specifically Red Chert or Jasper)
Microcrystalline Quartz (SiO2)
Shale
Fissile mudrock (composed primarily of clay minerals and quartz)
Chert (Flint variety)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Mixed Quartz and Jasper Pebbles
Silicon Dioxide (SiO2)
Red Jasper
Silicon dioxide (SiO2) with iron oxide (Fe2O3) inclusions
Shale (sub-type: Carbonaceous Shale)
Lutaceous Sedimentary Rock
Sandstone
Sandstone (arenite is a more specific geological term for a clean sandstone, while wacke refers to a dirty sandstone with significant matrix)
Chert (specifically Jasper or Flint type)
Microcrystalline Quartz (SiO2)
Chert (Yellow Jasper variant)
Microcrystalline Quartz (SiO2)
Chert Pebble (Flint)
Microcrystalline/Cryptocrystalline Quartz (SiO2)
Petrified Wood
Silicified wood (Quartz variant, SiO2)
Limonite-stained Chert
Silicon Dioxide (SiO2) with Hydrated Iron Oxide (FeO(OH)·nH2O)
Chert / River Jasper
Microcrystalline Quartz (SiO2)
Chert (often called Flint when dark)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (variations include Flint or Jasper)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Petrified Wood
Silicified Wood (SiO2)
Chert (Septarian or Nodular variety)
Microcrystalline Quartz (SiO2)
Chert (Flint Nodular)
Chert (Silicon dioxide, SiO2)
Amber
Succinite (fossilized tree resin)
Amber
Succinite (specifically for Baltic amber; fossilized tree resin)
Amber
Succinite (Fossilized Resin)
Petrified Wood
Silicified Wood (primarily SiO2)
Chert / Flint
Chert (Cryptocrystalline Silica, SiO2)
Banded Chert
Microcrystalline Quartz (SiO2)
Chert (Dark Variety / Flint)
Silicon Dioxide (SiO2)
Chert (Jasper variation)
Microcrystalline Quartz (SiO2)
Chert (containing Calcite or Quartz inclusions)
Silicon Dioxide (SiO2) with varying mineral impurities
Chert (Cherty Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Nodule)
Chert (Silicon Dioxide, SiO2)
Chert (varieties include Flint and Jasper)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Chert (Microcrystalline Quartz, SiO2)
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
Limestone with Calcite Veins
Calcium Carbonate (CaCO3)
Fossilized Coral (Petoskey Stone or Rugose Coral)
Antophyllum (Hexagonaria) or Scleractinia (CaCO3)
Chert (Flint)
Chert (SiO2)
Chert (varietal Flint)
Chert (SiO2)
Chert / Flint
Microcrystalline Quartz (SiO2)
Chert (Flint variety)
Microcrystalline context of Quartz (SiO2)
Black Jasper
Silicon Dioxide (SiO2) with Carbonaceous inclusions
Chert (often called Flint)
Chert (SiO2)