Dyed and Metallic Coated Agate Geode
Silicon Dioxide (SiO2) with titanium/gold vapor deposition coating
Category
Browse sedimentary (primary) with artificial modification specimens identified by the Rock Identifier community.
Dyed and Metallic Coated Agate Geode
Silicon Dioxide (SiO2) with titanium/gold vapor deposition coating
Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
Chert (specifically Flint or Gray Chert)
Silicon Dioxide (SiO2)
Concrete Fragment
Artificial Conglomerate (Cement and Aggregate)
Aggregate Concrete
Anthropogenic Conglomerate (Technosol)
Concrete / Conglomerate (Man-made)
Artificial Conglomerate (Cementitious Composite)
Concrete with Aggregate
Artificial Conglomerate (Cement and Aggregate)
Chert (Arrowhead Preform or Point)
Chert (Microcrystalline Quartz, SiO2)
Painted Garden Rock (likely Granite or Limestone base)
Silicon Dioxide (SiO2) / Calcium Carbonate (CaCO3) based substrate with Acrylic/Enamel pigments
Dolomite (Dolostone)
Dolomite [CaMg(CO3)2]
Asphalt (Bituminous pavement fragment)
Artificial conglomerate / Bitumen-Aggregate mixture
Moqui Marble (Shaman Stone)
Iron Oxide Concretion (Hematite/Goethite shell with Sandstone core)
Painted River Rock
Polished fluvial clast with acrylic/synthetic pigment coating
Fire Agate (Crackle Agate)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Dyed Chalcedony (Agate)
Silicon Dioxide (SiO2) with artificial pigment
Chert (Arrowhead Fragment)
Chert / Microcrystalline Silicon Dioxide (SiO2)
Chert (Arrowhead or Flake)
Microcrystalline quartz (SiO2)
Painted Pet Rock (Quartzite/Sandstone base)
Silicon Dioxide (SiO2) with anthropomorphic acrylic embellishments
Concrete
Anthropogenic Sedimentary Rock (Hydrated Calcium Silicate)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Turquoise (Dyed Howlite/Magnesite imitation)
CuAl6(PO4)4(OH)8·4H2O (Target mineral) / Ca2B5SiO9(OH)5 (Actual specimen: Howlite)
Glauconitic Sandstone
Glauconitic Sandstone (complex silicate formula: (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2)
Chert (Arrowhead Debitage or Spall)
Silicon Dioxide (SiO₂)
Chert (often called Flint)
Chert (Microcrystalline Quartz, SiO2)
Asphalt Concrete
Bituminous Concrete
Drill Core Sample
Cylindrical Rock Core (Specific mineralogy varies by extraction site)
Diamond (or Diamond Simulant/Cubic Zirconia)
Carbon (C) - if diamond, or Zirconium dioxide (ZrO2) - if Cubic Zirconia
Prasiolite
Silicon Dioxide (SiO2) with iron impurities
Grooved Maun Ball (Maul/Hammerstone-like Concretion)
Calcareous/Ferruginous Concretion in Sandstone Matrix
Chert (Arrowhead/Artifact Fragment)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Dyed Agate
Chalcedony (SiO2 with impurities)
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
Metallic Ornament / Jewelry
N/A - This is an artificial object, not a geological specimen.
Basalt
Basalt (Mafic volcanic rock)
Dyed Chalcedony (Agate)
Silicon Dioxide (SiO2)
Ferrous Slag
Fused calcium-iron silicates (Industrial Slag)
Concrete
Anthropogenic Sedimentary Conglomerate (Cement mixture: typically Ca2SiO4, Ca3SiO5, Ca3Al2O6)
Dyed Crackle Quartz/Agate (resembling Watermelon Tourmaline)
SiO2 (Silicon Dioxide)
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
Dyed Agate
Silicon Dioxide (SiO2)
Peacock Ore
Bornite (Cu5FeS4)
Dyed Blue Agate Geode Slice
Chalcedony (Silicon Dioxide, SiO2)