Fossiliferous Chert (with Fossil Shells)
Silicon Dioxide (SiO2) with biogenic inclusions
sedimentary
Category
Anthropogenic (Human Made) Sedimentary Like Material
Browse anthropogenic (human made) sedimentary like material specimens identified by the Rock Identifier community.
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Dyed Quartz (often sold as 'Blue Quartz' or 'Blue Agate')
Silicon Dioxide (SiO2) with artificial pigment
mineral
Synthetic Costume Accessory (Non-Geological)
Polyester and Acrylic Fiber (Anthropogenic polymer)
Synthetic / Man-made textile
Chert (specifically Black Chert or Flint)
Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Arrowhead Artifact)
Chert (SiO2)
sedimentary
Banded Chert
Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Field Stone)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Jasper variety)
Chert (SiO2)
sedimentary
Chert (Jasper/Flint Pebble)
Microcrystalline or Cryptocrystalline Silicon Dioxide (SiO2)
sedimentary
Limonite (Iron Ore)
Hydrous Iron Oxide (goethite, lepidocrocite)
Mineral
Slag (Industrial Glass)
Artificial Vitreous Silicate
mineraloid (anthropogenic)
Chert (Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Flint)
Microcrystalline silica (SiO2)
sedimentary
Chert (Flint variety)
Chert (SiO2)
sedimentary
Chert (varieties: Flint or Chalcedony)
Microcrystalline silica (SiO2)
sedimentary
Chert (Flint variety)
Silicon Dioxide (SiO2)
sedimentary
Chert (Green variety)
Silicon Dioxide (SiO2)
sedimentary
Sandstone (Quartz Arenite)
Sandstone (dominated by SiO2 quartz grains)
sedimentary
Ocean Jasper Mushroom
Orbicular Jasper (Silicon Dioxide, SiO2 mixed with various impurities)
mineral
Chert (variant Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (often called Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Nodule)
Microcrystalline Quartz (SiO2)
sedimentary
Coquina
Coquina (Bioclastic Limestone)
sedimentary
Chert (Yellow Jasper variant)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Flint/Jasper variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Yellow Ochre / Limonite
Limonite (FeO(OH)·nH2O)
Mineral
Chert (Nodule)
Microcrystalline Quartz (SiO2)
sedimentary
Coquina / Fossiliferous Limestone
Calcareous bioclastic sedimentary rock (CaCO3)
sedimentary
Chert (Jasper/Flint variant)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Yellow/Tan)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
sedimentary
Cobalt Blue Slag Glass
Amorphous Silicon Dioxide (anthropogenic) with Cobalt additives
mineraloid
Chert (White Chert / Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert with Iron Staining
Microcrystalline Quartz (SiO2)
sedimentary
Chert (or Flint)
Chert (cryptocrystalline quartz), SiO2
Sedimentary
Exposed Aggregate Concrete (Pea Gravel)
Concrete with Siliceous Alluvial Gravels
sedimentary (man-made conglomerate)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Chert (Grey-Green Flint)
Microcrystalline silicon dioxide (SiO2)
sedimentary
Chert (Jasper/Chalcedony variety)
Microcrystalline Quartz (SiO2)
sedimentary
Terrazzo (Man-made Composite)
Cementitious or Resin-bound Lithic Composite
sedimentary (artificial)