Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
Category
Browse anthropogenic sedimentary style organic solid specimens identified by the Rock Identifier community.
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
Chert (variant Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Amber
Resinite (Succinite if from the Baltic); Chemical Formula: C10H16O (approximate)
Petrified Wood
Silicified Wood (primarily SiO2)
Sandstone (with possibly iron oxides and other minerals)
Sandstone
Amber
Succinite
Shale
Shale
Amber
Succinite (fossilized resin); C10H16O
Gastropod Steinkern (Fossil Snail Internal Mold)
Class Gastropoda (Internal Mold)
Tufa (Limestone)
Calcareous Tufa (CaCO3)
Petrified Wood (Silicified Wood)
Silicified Paleoflora (mainly Quartz, SiO2)
Pink Opal
Hydrated Amorphous Silica (SiO2·nH2O)
Chert (specifically Iron-stained or Jasperoid Chert)
Microcrystalline Quartz (SiO2)
Petrified Wood
Silicified Wood (primarily Chalcedony/Quartz, SiO2)
Dragon Stone
Ohko Stone (Argillaceous sedimentary rock)
Chert (specifically Flint or Common Chert)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert / Flint Nodules
Cryptocrystalline Quartz (SiO2)
Chert (Nodule)
Microcrystalline Quartz (SiO2)
Chert (Yellow Jasper/Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Black Flint)
Silicon Dioxide (SiO2)
Chert (Chert / Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Banded Chert
Microcrystalline Quartz (SiO2)
Chert (often called Flint when dark)
Chert (Microcrystalline or Cryptocrystalline Silica, SiO2)
Chert (with Iron Staining)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Banded Variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Petoskey Stone
Hexagonaria percarinata (Fossilized Rugose Coral)
Chert (and Flint)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert (specifically Black Chert or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (and Limestone)
Silicon Dioxide (SiO2)
Chert (Grey Chert)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Nodule)
Chert (Microcrystalline Quartz, SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Tufa
Calcareous Tufa (Calcium Carbonate, CaCO3)
Petrified Wood
Silicified Wood (primarily SiO2)
Chert (White-Tan variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Sandstone
Arenicola (comprising mostly Quartz, SiO2)
Petrified Wood
Silicified Wood (primarily SiO₂)
Banded Chert
Cryptocrystalline Quartz (SiO2)
Dendritic Agate / Moss Agate
Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions
Green Moss Agate
Silicon Dioxide (SiO2) with inclusions of hornblende or chlorite
Fossiliferous Limestone with Rugose Coral
Calcium Carbonate (CaCO3) featuring Rugosa (extinct order of solitary and colony corals)
Chert (Nodule)
Microcrystalline or Cryptocrystalline Quartz (SiO2)