Brown Pebble (Probable Chert or Siltstone)
Silicon Dioxide (SiO2) / Sedimentary Microcrystalline Quartz
Category
Browse sedimentary (fossilized organic remain) specimens identified by the Rock Identifier community.
Brown Pebble (Probable Chert or Siltstone)
Silicon Dioxide (SiO2) / Sedimentary Microcrystalline Quartz
Chert
Microcrystalline or cryptocrystalline quartz (SiO2)
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Chert (v. Flint)
Chert (Microcrystalline Quartz, SiO2)
Chert (variant Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Jasper variation)
Silicon Dioxide (SiO2)
Chert (and Flint)
Silicon Dioxide (SiO2)
Chert (Nodule)
Microcrystalline Quartz (SiO2)
Chert (with Limestone matrix)
Chert (Silica: SiO2)
Chert (Yellow Jasper)
Microcrystalline Quartz (SiO2)
Chert (Jasper)
Microcrystalline Quartz (SiO2)
Chert / Flint
Chert (Microcrystalline Quartz, SiO2)
Chert (Flint)
Microcrystalline quartz (SiO2)
Chert (specifically Flint Arrowhead)
Silicon dioxide (SiO2) - Microcrystalline Quartz
Limestone
Calcium Carbonate (CaCO3)
Fossiliferous Limestone
Calcite-rich Fossiliferous Limestone (CaCO3)
Fossiliferous Limestone
Biogenic Sedimentary Rock (primarily CaCO3)
Chert (Flint)
Chert (SiO2)
Chert with Quartz Veining
Microcrystalline silica (SiO2)
Chert (Field Stone)
Microcrystalline Quartz (SiO2)
Chert (Jasper)
Microcrystalline Quartz (SiO2)
Chert (White Variety)
Microcrystalline Silica (SiO2)
Chert (Jasper)
Microcrystalline Quartz (SiO2)
Chert (Nodule)
Microcrystalline Quartz (SiO2)
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
Chert Pebble Map
Microcrystalline Quartz (SiO2)
Green Chert
Microcrystalline Quartz (SiO2)
Chert (specifically Flint or Nodular Chert)
Silicon dioxide (SiO2)
Chert
Microcrystalline Quartz (SiO2)
Chert (Iron-stained)
Microcrystalline Quartz (SiO2)
Chert (Arrowhead Artifact)
Chert (SiO2)
Fossiliferous Limestone
Carbonate Rock (CaCO3 with organic inclusions)
Chert (often called Flint)
Silicon Dioxide (SiO2)
Chert (Sedimentary Rock)
Silicon Dioxide (SiO2)
Chert
Microcrystalline Quartz (SiO2)
Banded Chert
Microcrystalline Quartz (SiO2)
Chert / Flint
Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Chert (SiO2)
Porphyry (specifically Porphyritic Andesite / Rhyolite)
Porphyritic Igneous Rock
Porphyry (Porphyritic Basalt or Andesite)
Porphyritic Igneous Rock
Porphyritic Rhyolite (Llanite or similar)
Porphyritic Rhyolite / Quartz-Feldspar Porphyry