Painted River Rock
Polished fluvial clast with acrylic/synthetic pigment coating
Category
Browse mineral with artificial coating specimens identified by the Rock Identifier community.
Painted River Rock
Polished fluvial clast with acrylic/synthetic pigment coating
Red Sandstone Pebble
Sandstone (Quartzose/Feldspathic Sandstone)
Concrete Paver (Artificial Cementitious Rock)
Hydrated Portland Cement Aggregate
Terrazzo (Man-made Composite)
Cementitious or Resin-bound Lithic Composite
Concrete
Anthropogenic Sedimentary Conglomerate (Cement mixture: typically Ca2SiO4, Ca3SiO5, Ca3Al2O6)
Quartzite (specifically Pink or Red Quartzite)
Metamorphosed Quartz Sandstone (SiO2)
Concrete / Conglomerate (Man-made)
Artificial Conglomerate (Cementitious Composite)
Sandstone (Ferruginous)
Arenite (Iron-rich)
Chert (Flint)
Microcrystalline Quartz (SiO2)
Smurf Rock (Fictional Interpretation)
Cyanus Anthropomorphicus (Geologic Simulation)
Nephrite Jade
Nephrite
Snowflake Obsidian
Obsidian with Cristobalite inclusions
Agate
Agate (Chalcedony), SiO2
Note: Item is not a geological specimen
Homo sapiens (Dermal Appendage: Pilus)
Granite
Granite
Pyrite in Quartz
FeS2 (Iron Pyrite) with SiO2 (Quartz)
Agate
Agate (Cryptocrystalline Quartz)
Unknown Tumbled Stone
Unknown (Too Blurry)
Rhodochrosite
Manganese Carbonate (MnCO3)
Smoky Quartz
Silicon dioxide (SiO2)
Dragon Blood Jasper
SiO2
Quartz (Pebble)
Silicon Dioxide (SiO2)
Granodiorite
Granodiorite
Amygdaloidal Basalt
Amygdaloidal Basalt containing Zeolite and Calcite inclusions
Rutilated Quartz (or possibly Tourmalinated Quartz, White Rutile)
SiO2 with TiO2 inclusions
Azurite Malachite
Azurite (Cu3(CO3)2(OH)2) and Malachite (Cu2CO3(OH)2)
Green Aventurine
SiO2
One Pound Coin (UK)
Nickel-Brass Alloy (Cu-Zn-Ni)
Planet Earth
Gaia (Silicate Terrestrial Planet)
Prehnite
Prehnite (Ca2Al2Si3O10(OH)2)
Malachite
Malachite (Cu2CO3(OH)2)
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
Malachite
Copper carbonate hydroxide [Cu2CO3(OH)2]
Bloodstone
Chalcedony (cryptocrystalline quartz)
Fluorite (tumbled pebble)
Calcium Fluoride (CaF2)
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
Chrysocolla
Chrysocolla; (Cu,Al)2H2Si2O5(OH)4·nH2O
Rhodonite
Manganese silicate (MnSiO3)
Rhodochrosite with Quartz
Manganese Carbonate (MnCO3) with Silicon Dioxide (SiO2)
Desert Rose
Gypsum (CaSO4-2H2O) or Baryte (BaSO4)
Azurite and Malachite
Copper Carbonates: Cu3(CO3)2(OH)2 (Azurite) and Cu2CO3(OH)2 (Malachite)
Chrysocolla
Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O)