Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Category
Browse man made object (metalwork) specimens identified by the Rock Identifier community.
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Jasper (Red Jasper)
Jasper (SiO2 - Silicon Dioxide with iron inclusions)
Orange Calcite
Calcium Carbonate (CaCO3)
Malachite
Malachite (Copper Carbonate Hydroxide, Cu2CO3(OH)2)
Picture Jasper
Silicon Dioxide (SiO2) with iron oxide and clay inclusions
Black Onyx
Black Chalcedony (SiO2)
Malachite
Malachite (Copper Carbonate Hydroxide) - Cu2CO3(OH)2
Chert (Flint)
Chert (Microcrystalline Quartz, SiO2)
Amethyst
Silicon Dioxide (SiO2) with Fe3+ impurities
Pyrulite (Pyrite / Chalcopyrite)
Iron Sulfide (FeS2) or Copper Iron Sulfide (CuFeS2)
Chert (Jasper/Flint variety)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Yooperlite (Syenite clast containing fluorescent Sodalite)
Sodalite-bearing Syenite
Chert (Quartz Variety)
Chert (Silicon Dioxide, SiO2)
Ferrous Slag (Iron Smelting By-product)
Fused Siliceous Slag
Synthetic Blue Aura Quartz
Silicon Dioxide (SiO2) with Metallic Infusion
Asphalt Concrete
Bituminous Concrete / Asphaltic Composite
Sea Glass (Kelly Green)
Amorphous Silica (Silicon Dioxide with Iron/Chromium additives)
Ferrochrome Slag
Industrial Glassy Slag (Fe-Cr alloy byproduct)
Green Slag Glass
Cullet (Amorphous Silicon Dioxide with impurities)
Slag Glass (Cullet)
Amorphous Silica / Glass residue
Ferrosilicon Slag (Industrial Vitrified Glass)
Vitreous Silicate Residue
Blue Goldstone
Aventurine Glass
Synthetic Costume Glove (Paws)
Polyethylene terephthalate (Polyester) & Polyurethane blend
Terrazzo (Synthetic Composite Rock)
Cementitious or Epoxy Resin-bound Aggregates
Slag
Anthropogenic Vitrification Product / Silicate Slag
Green Aventurine
Aventurine (Silicon dioxide, SiO₂)
Optical Calcite (Iceland Spar)
Calcium Carbonate (CaCO3)
Chert (Tan/Brown variety)
Chert (Silicon Dioxide, SiO2)
Chert (Nodule)
Chert (SiO2)
Amber
Succinite (Carbon-based organic compound; approximate formula C10H16O)
Chert (specifically Jasper or Flint variety)
Cryptocrystalline Quartz (SiO2)
Coquina
Biogenic Limestone (Calcite/Aragonite base, CaCO3)
Petrified Wood
Silicified Wood (primarily SiO2)
Chert (specifically White Chert or Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (and Flint)
Silicon Dioxide (SiO2)
Chert (and/or Flint)
Chert (Cryptocrystalline variety of Quartz, SiO2)
Optical Calcite (Iceland Spar)
Calcium Carbonate (CaCO3)
Chert (and Flint)
Silicon Dioxide (SiO2)
Chert (specifically White Chert or Novaculite)
Silicon Dioxide (SiO₂)
Granite
Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)
Rose Gold (Copper-Gold Alloy)
Aurum-Cuprum Alloy (Au-Cu)
Banded Sandstone
Arenite with Liesegang banding