Chert (specifically Flint Arrowhead)
Silicon dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Category
Igneous Or Sedimentary (Anthropogenic Modification)
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Sea Glass
Man-made vitreous material (silica-based glass)
mineral
Chert Arrowhead (Lithic Tool)
Microcrystalline quartz (SiO2) - Archeological lithic artifact
sedimentary
Basalt
Basalt (Mafic Extrusive Igneous Rock)
igneous
Chert (Arrowhead/Tool variety)
Microcrystalline Quartz (SiO2)
sedimentary
Chert Arrowhead (Lithic Artifact)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Arrowhead/Projectile Point)
Chert (Cryptocrystalline Quartz, SiO2)
sedimentary
Greenstone Celt (Polished Stone Axe)
Metamorphosed mafic rock (often Basalt or Diabase)
metamorphic
Chert (Arrowhead Fragment)
Microcrystalline Quartz (SiO2)
sedimentary
Iron Slag (Industrial Byproduct)
Anthropogenic pyrometallurgical residue
mineral
Iron Slag
Anthropogenic Ferro-silicate
mineral
Iron Slag
Anthropogenic Iron Silicate
industrial byproduct
N/A - Image does not contain a rock or mineral
Anthropogenic textile material
Non-geological
Sandstone (likely Fossilized Wood or Concrete Simulacrum)
Arenite / Silicified Wood / Anthropogenic Concrete
sedimentary
Painted River Rock
Artificially Coated Sedimentary Rock
sedimentary
Chert (Arrowhead Debitage or Flake)
Microcrystalline silica (SiO2)
sedimentary
Slag Glass (Leland Blue variant)
Anthropogenic Vitreous Silicate
mineral
Aluminum Slag
Anthropogenic Aluminum (Al)
mineral
Slag
Anthropogenic glassy silicate
Mineral-like byproduct
Green Slag
Anthropogenic Silicate Glass
Mineraloid (Industrial byproduct)
Iron Slag
Anthropogenic pyrometallurgical residue
industrial byproduct
Note on Image Identification: Textile
N/A (Anthropogenic material)
not a rock
Slag (Industrial)
N/A (Anthropogenic Slag)
industrial by-product
Man-made Slag (Industrial Byproduct)
Anthropogenic Glassy Residue
not a natural rock
Aluminum Slag
Anthropogenic Aluminum (Al)
mineral
Conglomerate (Asphaltic/Anthropogenic)
Clastic sedimentary rock / Bituminous mixture
sedimentary
Chert Arrowhead (Projectile Point)
Microcrystalline Quartz (Chert or Flint)
sedimentary
Chert (Arrowhead/Projectile Point)
Cryptocrystalline Quartz (SiO2)
sedimentary
Slag
Anthropogenic Vitreous Silicate / Ferro-silicate Slag
igneous
Slag (Industrial Glass)
Anthropogenic Vitreous Slag (Post-industrial byproduct)
igneous
Terrazzo (Synthetic Composite Rock)
Cementitious or Epoxy Resin-bound Aggregates
Man-made metamorphic-style composite
Granite Pebble
Granite (Phaneritic intrusive igneous rock comprising Quartz, Feldspar, and Mica)
igneous
Chert (Arrowhead variety)
Chert (SiO2)
sedimentary
Asphalt (Bituminous Concrete)
Bituminous mix / Anthropogenic conglomerate
man-made composite (lithified equivalent of sedimentary)
Concrete
Anthropogenic Sedimentary Rock (Hydrated Calcium Silicate)
sedimentary (anthropogenic / man-made)
Slag (Industrial Glassy Byproduct)
Anthropogenic silicate byproduct (Slag)
Mineral-like byproduct (often mistaken for igneous rock or meteorite)
Anthropogenic Heat Source (Electronic/Industrial Interface)
Thermal IR emission (Electronic infrastructure)
not a rock or mineral
Stainless Steel (Polished)
Ferrous Alloy containing Iron (Fe), Chromium (Cr), and Carbon (C)
Mineral equivalent / Metal Alloy
Asphalt (Bituminous Concrete)
Asphaltum / Bitumen-Aggregate Matrix
Technonatural composite (often containing sedimentary/igneous aggregate)
Eroded Brick or Pumice-like Scoria
Vesicular Basalt / Scoria (Anthropogenic variant: Eroded Firebrick)
igneous
Artisanal Glass Beads (Simulated Goldstone or Aventurine Glass)
Silicon Dioxide (SiO2) with metallic inclusions
man-made material
Chert Arrowhead
Cryptocrystalline microcrystalline Quartz (SiO2)
sedimentary