Sandstone Concretion
Clastic Sedimentary Concretion (SiO2 with Iron Oxide)
sedimentary
Category
Mineral (Man Made Composite)
Browse mineral (man made composite) specimens identified by the Rock Identifier community.
Opalite
Synthetic Opalised Glass
mineral
Dyed Imperial Jasper (Sea Sediment Jasper)
Silicon Dioxide (SiO2) - Impure Quartz/Chalcedony
sedimentary
Opalite (a synthetic glass)
Silicon Dioxide (SiO2) with various additives; not a true mineral but a man-made gem simulant
Mineral Simulant (Synthetic Glass)
Opalite
Opalescent Glass (SiO2 + coloring agents)
Mineral (Synthetic/Man-made)
Dyed Agate
Chalcedony (SiO2)
mineral
Crushed Stone (Likely Limestone or Granite)
Calcium Carbonate (CaCO3) for Limestone / Quartz and Feldspar for Granite
sedimentary or igneous
Titanium Aura Quartz (Bismuth-coated Druzy)
Silicon Dioxide (SiO2) with Titanium/Metal vapor coating
mineral
Carborundum (Silicon Carbide)
Silicon Carbide (SiC)
mineral
Concrete Rubble with Aggregate
Hardened Portland Cement Paste with Coarse Aggregate
Anthropogenic (Man-made)
Sandstone Concretion
Sedimentary Clastic Rock (Silicate-rich)
sedimentary
Pyrite in Quartz (Drill Core)
Silicon Dioxide (SiO2) with Iron Sulfide (FeS2) inclusions
igneous/metamorphic (hydrothermal)
Concrete Paver (Artificial Cementitious Rock)
Hydrated Portland Cement Aggregate
Sedimentary (Synthetic)
Cullet (Slag Glass)
Amorphous Silica (SiO2) with various metal oxide colorants
mineraloid / anthropogenic
Sandstone (with Liesegang rings or joints)
Clastic Sedimentary Rock (primarily Quartz with Iron Oxide cement)
sedimentary
Opalite (Synthetic Opalized Glass)
Synthetic Silicon Dioxide (SiO2) glass
mineral
Opalite (Synthetic Moonstone/Sea Opal)
Silicon Dioxide (SiO2) glass with metallic inclusions
Synthetic/Man-made Glass
Opaline Glass (Opalite)
Synthetic Silicon Dioxide Glass
Mineraloid (Man-made)
Sandstone Concretion
Clastic Sedimentary Concretion (typically Quartz/Silica with Iron Oxide)
sedimentary
Opalite
Synthetic Glass (Simulated Opal)
mineral
Aventurine Quartz
Silicon Dioxide (SiO2) with Fuchsite inclusions
metamorphic
Aura Quartz
Titanium-coated Silicon Dioxide (SiO2)
mineral
Moldavite
Tektite (Impact Glass), ~80% SiO2 + Al2O3
tektite
Slag
Anthropogenic glassy silicate
Mineral-like byproduct
Blue Goldstone
Auraventurine (Synthetic glass with cobalt and copper inclusions)
Synthetic (Man-made Glass)
Opalite
Synthetically produced glass (Silicon Dioxide with metallic inclusions)
Mineraloid (Man-made Glass)
Aura Quartz (Rainbow Quartz)
Silicon Dioxide (SiO2) with metallic vapor coatings
mineral
Concrete
Anthropogenic Sedimentary Conglomerate (Cement mixture: typically Ca2SiO4, Ca3SiO5, Ca3Al2O6)
sedimentary (artificial)
Synthetic Resin / Plastic Figurine
Synthetic Polymer (Copolymer of Polyethylene or Resin)
Mineraloid-like Synthetic Material
Cullet Glass (Slag Glass)
Amorphous Silicon Dioxide (Industrial Byproduct)
mineraloid
Titanium Coated Kyanite (Aura Kyanite)
Aluminosilicate (Al2SiO5) with a Titanium-Niobium vacuum-deposited coating
metamorphic
Acrylic or Resin (Synthetic Imitation)
Polymethyl Methacrylate (PMMA) or Polyepoxide
Synthetic/Man-made Polymer
Strawberry Quartz
Silicon Dioxide (SiO2) with Hematite or Goethite inclusions
mineral
Cullet Glass (Slag)
Amorphous Silicon Dioxide (Man-made)
Mineraloid
Opalite
Synthetic Glass (Amorphized Silicon Dioxide)
mineraloid
Slag
Glassy silicate byproduct (anthropogenic material)
industrial byproduct
Opalite (Synthetic Moonstone/Opal)
Synthetic Silica Glass
mineraloid (synthetic)
Opalite
Synthetic Glass (Hydrated Crystalline Silicon Dioxide simulation)
mineral
Glazed Ceramic Tile
Fused Silicate-Clay composite
Synthetic (Man-made material mimicking natural stone)
Glass
Amorphous Silicon Dioxide (SiO2)
mineraloid
Libyan Desert Glass
Libyan Desert Glass (SiO2 with trace elements)
mineral (impactite)
Sandstone Concretion
Septarian or Carbonate-cemented Sandstone Concretion
sedimentary