Chert (specifically Jasper or Flint)
Cryptocrystalline Quartz (SiO2)
Category
Browse anthropogenic (human made) sedimentary like material specimens identified by the Rock Identifier community.
Chert (specifically Jasper or Flint)
Cryptocrystalline Quartz (SiO2)
Ferro-slag (Leland Blue/Slag Glass)
Anthropogenic Vitreous Silica (Industrial Slag)
Chert (Arrowhead Debitage or Flake)
Microcrystalline silica (SiO2)
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Asphalt (Road Aggregate)
Asphalt concrete / Bituminous mixture
Pet Rock (Man-made Quartzite or Granite Cobble)
Silicon dioxide (SiO2) mixture; commonly composed of Quartz, Feldspar, and Mica
Chert (Jasper variety)
Silicon Dioxide (SiO2)
Chert (often called Flint)
Chert (Microcrystalline Quartz, SiO2)
Sandstone Concretion
Sedimentary concretion
Chert (often called Flint)
Chert (SiO2)
Chert (and/or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Asphalt Chunk (with aggregate)
Bituminous concrete / Anthropogenic conglomerate
Chert (specifically Flint Arrowhead)
Silicon dioxide (SiO2) - Microcrystalline Quartz
Painted River Rock
Anthropogenic-modified Siliciclastic Sedimentary Rock
Chert (and/or Flint)
Microcrystalline Quartz (SiO2)
Chert (varieties include Flint and Mudstone)
Microcrystalline Silica (SiO2)
Slag (Industrial Byproduct)
Artificial silicate/iron byproduct
Chert (with Limestone matrix)
Silicon dioxide (SiO2)
Flint / Chert
Silicon dioxide (SiO2)
Green Slag
Anthropogenic Silicate Glass
Painted River Pebble (likely Basalt or Greywacke)
Aphanitic Lithic Clast with Anthropogenic Pigment coating
Chert (or Flint)
Chert (a cryptocrystalline variety of quartz, SiO2)
Cullet (Slag Glass)
Amorphous Silica (SiO2) with various metal oxide colorants
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
Artisanal Glass Beads (Simulated Goldstone or Aventurine Glass)
Silicon Dioxide (SiO2) with metallic inclusions
Aluminum Slag
Anthropogenic Aluminum (Al)
Asphalt Concrete (Bituminous Pavement)
Aggregates in Bitumen Matrix
Slag Glass
Anthropogenic Amorphous Silicon Dioxide
Carved Mottled Greenish-Yellow Crystal/Glass Object
Unknown; possibly a form of quartz (chalcedony/jadeite/nephrite) or glass/resin.
Titanium Aura Quartz (Bismuth-coated Druzy)
Silicon Dioxide (SiO2) with Titanium/Metal vapor coating
Chert (specifically White Chert or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (and Jasper/Chalcedony mixture)
Microcrystalline Quartz (SiO2)
Chert (Flint)
Chert (Microcrystalline Quartz, SiO2)
Asphalt (Bituminous Concrete)
Bituminous mix containing aggregates and petroleum-based binder (CnH2n+2)
Sandstone-based Concrete Fragment
Cementitious Composite with Sedimentary Aggregate
Chert
Silicon dioxide (SiO2)
Iron Slag
Anthropogenic pyrometallurgical residue
Slag
Anthropogenic glassy silicate
Chert (and Flint)
Silicon Dioxide (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Glass
Amorphous Silicon Dioxide (SiO2)
Chert (specifically Jasper or Flint variety)
Cryptocrystalline Quartz (SiO2)