Painted Garden Rock (likely Granite or Limestone base)
Silicon Dioxide (SiO2) / Calcium Carbonate (CaCO3) based substrate with Acrylic/Enamel pigments
igneous or sedimentary (anthropogenic modification)
Category
Igneous Or Sedimentary (Anthropogenic Modification)
Browse igneous or sedimentary (anthropogenic modification) specimens identified by the Rock Identifier community.
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Chert (Arrowhead Preform or Point)
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Chert (specifically a Lithic Flake)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
sedimentary
Chert (Arrowhead or Flake)
Microcrystalline quartz (SiO2)
sedimentary
Basalt
Basalt (Mafic volcanic rock)
igneous
Nutting Stone / Cupstone (Sandstone or Quartzite)
Sedimentary rock with anthropogenic modification (cupule)
sedimentary
Grooved Maun Ball (Maul/Hammerstone-like Concretion)
Calcareous/Ferruginous Concretion in Sandstone Matrix
sedimentary
Red Painted Rock
Artificial Coated Lithic Fragment
sedimentary
Basalt Metate
Vesicular Basalt
igneous
![Dolomite (Dolostone) (Dolomite [CaMg(CO3)2]) — sedimentary](https://media.rock.id/d6b33d26-c557-45bd-97d5-d00c4563d8ed-thumbnail.jpg)
Dolomite (Dolostone)
Dolomite [CaMg(CO3)2]
sedimentary
Painted River Rock
Polished fluvial clast with acrylic/synthetic pigment coating
Sedimentary or Metamorphic (base substrate)
Painted Sandstone
Sandstone (clastic sedimentary rock) with acrylic/artistic coating
sedimentary
Chert (Arrowhead Fragment)
Chert / Microcrystalline Silicon Dioxide (SiO2)
sedimentary
Pitted Sedimentary Rock / Cupstone
Sedimentary rock with weathering pit (arenite / sandstone)
sedimentary
Fire Agate (Crackle Agate)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Painted Pet Rock (Quartzite/Sandstone base)
Silicon Dioxide (SiO2) with anthropomorphic acrylic embellishments
sedimentary
Chert (Flint) Artifact
Silicon Dioxide (SiO2)
sedimentary
Concrete
Anthropogenic Conglomerate
sedimentary
Chert or heavily weathered flint
Microcrystalline quartz (SiO₂), likely chert/flint
sedimentary
Chert Arrowhead (Projectile Point)
Microcrystalline Quartz (Chert/Flint)
sedimentary
Concrete rubble
Anthropogenic conglomerate
sedimentary
Flint or chert
Microcrystalline quartz (SiO₂), commonly called flint when dark and nodular
sedimentary
Asphalt concrete
Anthropogenic conglomerate
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
mineral
Smelter Slag
Anthropogenic Silicate Slag
igneous
Chert (specifically Flint or Gray Chert)
Silicon Dioxide (SiO2)
sedimentary
Glauconitic Sandstone
Glauconitic Sandstone (complex silicate formula: (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2)
sedimentary
Diamond (or Diamond Simulant/Cubic Zirconia)
Carbon (C) - if diamond, or Zirconium dioxide (ZrO2) - if Cubic Zirconia
mineral
Chert (Arrowhead Debitage or Spall)
Silicon Dioxide (SiO₂)
sedimentary
Slag (Industrial Glass/Glassy Rock)
Anthropogenic Vitreous Material
igneous
Ferrocoke or Slag
Anthropogenic pyrometallurgical residue
igneous
Flint Arrowhead
Cryptocrystalline quartz (Chert/Flint, SiO2)
sedimentary
Chert / Flint Handaxe
Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Arrowhead/Artifact Fragment)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Industrial Slag
Anthropogenic Vitreous Slag
igneous
Iron Slag
Anthropogenic pyrometallurgical byproduct
igneous
Chert (often called Flint)
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Fordite
Anthropogenic paint-rock
mineraloid (human-made geological specimen)
Asphalt Concrete (Bituminous Conglomerate)
Anthropogenic Bituminous Conglomerate
sedimentary
Aggregate Concrete
Anthropogenic Conglomerate (Technosol)
sedimentary
Slag (Industrial Glass/Byproduct)
Anthropogenic Vitreous Silicate
igneous (anthropogenic)