Chert Arrowhead
Cryptocrystalline Quartz (SiO2)
Category
Browse industrial byproduct (anthropogenic rock) specimens identified by the Rock Identifier community.
Chert Arrowhead
Cryptocrystalline Quartz (SiO2)
Tiffany Stone
Bertrandite (with Fluorite, Opal, and Chalcedony), Be4Si2O7(OH)2
Chert (Arrowhead/Tool variety)
Microcrystalline Quartz (SiO2)
Chert (specifically Flint Arrowhead)
Silicon dioxide (SiO2) - Microcrystalline Quartz
Sulfur (with possible Cullet Glass or Slag imitation)
Native Sulfur (S8)
Red Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Chert Arrowhead
Microcrystalline Quartz (SiO2)
N/A (Non-Geological Object)
Chert (Flint)
Chert (SiO2)
Mystic Topaz
Aluminum silicate fluoride hydroxide with titanium coating (Al2SiO4(F,OH)2)
Fired Clay Brick (Anthropic Rock substitute)
Anthropogenic polycrystalline ceramic (predominantly Mullite and Quartz: Al6Si2O13 + SiO2)
Chert (Arrowhead Fragment)
Microcrystalline Quartz (SiO2)
Crackled Quartz (Blue Dyed)
Silicon Dioxide (SiO2) with anthropogenic dye
Bismuth
Bismuth (element Bi) with oxidized thin-film interference layer
Quartzite (Lithic Artifact)
Quartzite (SiO2)
Gravel or Crushed Stone
Fragmented Aggregate Stone
Titanium Aura Quartz (Bismuth-coated Druzy)
Silicon Dioxide (SiO2) with Titanium/Metal vapor coating
Chert (Arrowhead Debitage or Flake)
Microcrystalline silica (SiO2)
Sulfur
Native Sulfur (S)
Bismuth Crystal
Bismuth (Bi)
Arsenopyrite with Schist Matrix
Arsenopyrite (FeAsS)
Tiffany Stone
Fluoritized Opal Beryllium Tuff (composed of Fluorite; CaF2, Opalized SiO2, Bertrandite, Chalcedony, and Quartz)
Sea Glass
Amorphous Silica (Anthropogenic glass) - SiO2
Jasper
Jasper (Silicon Dioxide, SiO2)
Chalcopyrite
Chalcopyrite (CuFeS2)
Fluorite (Purple/Blue variety)
Calcium Fluoride (CaF2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
South Korean 100 Won Coin (Cupronickel)
Cupronickel Alloy (75% Cu, 25% Ni)
Silver (Sterling Silver Jewelry)
Argentum (Ag) mixed with Copper (Cu)
Asphalt (Road Aggregate)
Asphalt concrete / Bituminous mixture
Concrete Rubble with Aggregate
Hardened Portland Cement Paste with Coarse Aggregate
Quartzite Arrowhead (Archaeological Lithic)
Recrystallized Quartz (SiO2)
Silver (Jewelry form)
Native Silver (Ag)
Pyrite (on Quartz matrix)
Iron Disulfide (FeS2)
Mother of Pearl (Nacre)
Aragonite (CaCO3) with Organic Matrix
Man-made Jewelry (Metal and Glass/Plastic)
Synthetic Alloy and Amorphous Solid (SiO2/Polymer)
Kimberlite
Kimberlite
Vesicular Basalt (Lava Rock)
Basalt
Calcite
Calcium Carbonate (CaCO3)
Queen Conch Shell (Biogenic Calcium Carbonate)
Aliger gigas (synonym Strombus gigas); Composition: Aragonite (CaCO3)
Quartz Pebble (Iron-Stained)
Crystalline Silicon Dioxide (SiO2)
Vesicular Basalt
Extrusive Mafic Igneous Rock (Vesicular Basalt)