Coquina
Bioclastic Limestone
sedimentary
Category
Anthropogenic (Man Made Material Processed By Nature)
Browse anthropogenic (man made material processed by nature) specimens identified by the Rock Identifier community.
Learn about Anthropogenic (Man Made Material Processed By Nature) in the encyclopedia
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Blue Cracked Quartz (Dyed Fire Crackle Quartz)
Silicon Dioxide (SiO2) with synthetic dye
mineral
Quartz pebble (Quartztite fragment)
Silicon Dioxide (SiO2)
mineral
Dyed Crackle Quartz (Green)
Quenching-treated Quartz (Silicon Dioxide, SiO2)
mineral
Blue Obsidian (Cullet Glass)
Silicon Dioxide (Amorphous Glass)
mineral
Goldstone
Aventurine Glass (Man-made glass with copper inclusions)
mineraloid / man-made glass
Chert (Arrowheads)
Microcrystalline Quartz (SiO2)
sedimentary
Cubic Zirconia (Simulated Diamond)
Cubic Zirconia (ZrO2)
mineral
Opalite
Synthetic Opalite Glass / Opalized Glass
gemstone
Asphalt concrete
Anthropogenic conglomerate
sedimentary
Crescent Pebble
Weathered Quartzite or Sandstone Fragment
sedimentary
Dyed Agate
Silicon Dioxide (SiO2) with artificial pigment
mineral
Polished black stone, likely black obsidian
Obsidian (volcanic glass), chiefly silica-rich rhyolitic composition
igneous
Blue Crackle Quartz (Dyed Quarzite)
Silicon Dioxide (SiO2) with artificial dye
Metamorphic (modified)
Man-made Metal Pin (Non-geological)
Antimony-Lead Alloy or Zinc/Brass Base with Electroplating
Metal Alloy / Manufactured Artifact
Sandstone Pebble
Arenite (Siliclastic sedimentary rock)
sedimentary
Bismuth
Bismuth (Bi)
mineral
Aura Quartz
Titanium/Titanium-Gold treated Silicon Dioxide (SiO2)
mineral
Titanium Coated Aura Quartz (Apple Aura Quartz)
Silicon Dioxide (SiO2) with Metallic Vapor Deposition Coating
Mineral (Man-modified)
Red Slag Glass
Amorphous Silica (Industrial byproduct with metallic oxide dopants)
Mineraloid / Industrial Byproduct
Sea Glass
Man-made silicate glass
gemstone
Opalite
Man-made opalescent glass
gemstone
Opalite
Man-made opalized glass
mineral
Pyrite in Quartz (Drill Core)
Silicon Dioxide (SiO2) with Iron Sulfide (FeS2) inclusions
igneous/metamorphic (hydrothermal)
Build-A-Bear Plush (Non-Geological)
Polyester fibers (C10H8O4)n and Synthetic Polymers
Anthropogenic / Non-mineral
Man-made Crystal (Lead Glass)
Lead oxide-doped Silica Glass (approx. SiO2 + PbO)
Mineraloid/Synthetic Material
Man-made Jewelry (Metal and Glass/Plastic)
Synthetic Alloy and Amorphous Solid (SiO2/Polymer)
not a rock
Goldstone
Aventurine Glass (SiO2 + Cu small inclusions)
man-made glass mineral simulant
Pink Tumbled Quartz (Dyed)
Silicon Dioxide (SiO2)
mineral
Opalite
Synthetic Glass (Silica-based)
gemstone
Granite with Cupules / Bedrock Mortars
Granite (felsic intrusive plutonic rock)
igneous
Opalite
Synthetic Opalite Glass (Silicon Dioxide)
mineraloid (man-made)
Sandstone Concretion
Limonitic Sandstone Concretion
sedimentary
Blue Obsidian
Volcanic Glass (SiO2 with inclusions)
igneous
Coquina
Bioclastic Limestone (composed primarily of CaCO3)
sedimentary
Green Obsidian Sphere (man-made glass)
Vitreous Silica with Chromium/Iron additives
mineralogical simulant
Slag (Industrial Byproduct)
Anthropogenic Vitreous Silicate material
igneous
Coquina
Biogenic Limestone (Calcite, CaCO3)
sedimentary
Chert Arrowhead
Microcrystalline Quartz (SiO2)
sedimentary
Titanium Amethyst Geode
Silicon Dioxide (SiO2) with Titanium/Metal Vapor Deposition Layer
mineral
Sandstone Anvil / Nutting Stone
Quartzose Sandstone (Sedimentary Rock)
sedimentary
Porcelain Tile (Sandstone-look)
Man-made Ceramic (resembling Quartz-rich Sandstone)
sedimentary (imitation)