Sea Glass (Frosted Glass)
Amorphous Silica (SiO2) with various additives
Category
Browse man made byproduct (non geological) specimens identified by the Rock Identifier community.
Sea Glass (Frosted Glass)
Amorphous Silica (SiO2) with various additives
Marble
Marble (metamorphosed limestone/dolostone). Predominantly composed of Calcite (CaCO3) for marble derived from limestone, or Dolomite (CaMg(CO3)2) for marble derived from dolostone.
Sea Glass (Teal/Turquoise)
Amorphous Silica (SiO2) with trace metal oxides
Blue Sapphire (Synthetic or Man-made Glass Imitation)
Corundum (Al2O3) if natural; Lead-glass or Spinal if synthetic
Diamond
Carbon (C)
Chalk
Carbonate rock (mainly CaCO3)
Obsidian
Volcanic Glass (Amorphous SiO2)
Pyrite (on Quartz matrix)
Iron Disulfide (FeS2)
Terrazzo (with Marble and Granite fragments)
Cementitious or resinous composite containing Calcium Carbonate (CaCO3) and Silicates
Fossilized Coral (Coquina/Limestone)
Cnidaria Anthozoa (Fossilized)
Sea Glass (Turquoise/Aqua)
Amorphous Silica (SiO2) with transition metal dopants
Slag (Industrial Glassy Byproduct)
Ferro-silicate Slag
Diamond (in a cluster setting)
Crystallized Carbon (C)
Sandstone Concretion
Sedimentary concretion
Sea Glass (Frosted Glass)
Amorphous Silica (SiO2) with various metal oxide impurities
Green Aura Quartz
Silicon Dioxide (SiO2) bonded with metallic vapors (typically Gold, Chromium, or Titanium)
Pink Granite
Phaneritic Felsic Igneous Rock (Granite)
Synthetic Marbled Aggregate (Footwear Component)
Ethylene-vinyl acetate (Croslite™)
Bog Iron / Limonite Concretion
Goethite/Limonite mixture (FeO(OH)·nH2O)
Artificial Rock Face (Faux Rock)
Glass Fiber Reinforced Concrete (GFRC)
Chert (specifically Flint)
Chert (SiO2)
Granite
Granite (a plutonic rock)
Smoky Quartz
Smoky Quartz (SiO2)
Granite
Granite (Phaneritic Quartz-Feldspar intrusive rock)
Everest
Canis lupus familiaris (Siberian Husky)
Build-A-Bear Plush (Non-Geological)
Polyester fibers (C10H8O4)n and Synthetic Polymers
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3)
Pearl
Biogenic Calcium Carbonate (Aragonite/Calcite), CaCO3
Diamond Plate (Steel)
Alloyed Carbon Steel or Aluminum with 'Durbar' pattern
Diabase (Greenstone)
Diabase (Dolerite)
Malaysian 50 Sen Coin
Coinage (specific alloy unknown without metallurgical analysis, but typically brass or bronze for this denomination and era)
Dolerite (Diabase)
Dolerite / Diabase
Sandstone
Arenite (composed primarily of SiO2)
Chert (Cherty Shale / Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Sandstone
Arenite (composed primarily of SiO2)
Diamond (in a jewelry setting)
Cubic Carbon (C)
Coquina
Bioclastic Limestone
N/A - Image is non-geological
Acrylonitrile Butadiene Styrene (ABS) or Polypropylene (PP)
Banded Chert
Microcrystalline Quartz (SiO2)
Chert (variations include Flint/Jasper)
Cryptocrystalline Quartz (SiO2)
Aragonite (specifically Mexican Marbled Onyx)
Aragonite (Calcium Carbonate, CaCO3)
Chalk
Calcium Carbonate (CaCO3)