Chert Pebble
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Category
Anthropogenic (Man Made Material)
Browse anthropogenic (man made material) specimens identified by the Rock Identifier community.
Learn about Anthropogenic (Man Made Material) in the encyclopedia
View all →
Quartzite
Quartzite (SiO2)
metamorphic
Chert (River Siltstone/Quartzite type)
Microcrystalline Quartz (SiO2)
sedimentary
Crinoid Fossil Stem Segment
Class Crinoidea (Echinodermata)
sedimentary
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Chert (varieties include Flint and Jasper)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Amethyst
Amethyst (Silicon Dioxide, SiO2 + Fe4+ impurities)
mineral
Sandstone
Sedimentary Rock (Quartz arenite)
sedimentary
Petrified Wood
Fossilized wood / Silicified wood
Sedimentary / Fossil
Synthetic Blue Aura Quartz
Silicon Dioxide (SiO2) with Metallic Infusion
mineral (synthetic/man-made coating)
Slag Glass (Cullet)
Amorphous Silica / Glass residue
Man-made byproduct (Non-geological)
Blue Goldstone
Aventurine Glass
Man-made mineral simulant (Glass)
Synthetic Costume Glove (Paws)
Polyethylene terephthalate (Polyester) & Polyurethane blend
Non-geological / Man-made textile
Rose Gold (Copper-Gold Alloy)
Aurum-Cuprum Alloy (Au-Cu)
mineral (native element alloy)
Fossilized Ray Barb (Stinger) Fragment
Myliobatiformes indet. (Fossil stingray spine)
fossil
Glazed Ceramic Tile
Fused Silicate-Clay composite
Synthetic (Man-made material mimicking natural stone)
Green Slag Glass
Amorphous Silica / Glassy Blast Furnace Slag
Mineraloid (Industrial byproduct)
Chert
Microcrystalline quartz (SiO2)
sedimentary
Chert
Sedimentary cryptocrystalline quartz (SiO2)
sedimentary
Flint
Silicon Dioxide (SiO2) - Microcrystalline Quartz / Chert
sedimentary
Amethyst (with Pyrite and other minerals)
Silicon Dioxide (SiO2)
mineral
Diamond
Natural Diamond (Carbon, C)
gemstone
Dyed Quartz (imitating Emerald/Green Quartz)
Silicon Dioxide (SiO2) with artificial pigment
mineral
Gold
Native Gold (Au)
mineral
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities
mineral
Dolerite (Diabase)
Dolerite / Diabase
igneous
Sandstone
Arenite (SiO2 principal)
sedimentary
Amazonite
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Granite / Gneiss (Coarse-Grained Felsic Rock)
Granite (Quartz-Feldspar-Mica aggregate)
igneous
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Pyrite
Iron Disulfide (FeS2)
mineral
Chert (Jasper/Agate variety)
Silicon Dioxide (SiO2)
sedimentary
Moonstone
Orthoclase Feldspar (formula: (K,Na)AlSi3O8)
mineral
Chert (Jasper variety)
Silicon Dioxide (SiO2)
sedimentary
Fossilized Shark Tooth
Carcharocles sp. or Striatolamia sp. (Phosphate/Carbonate mineralized Hydroxyapatite)
sedimentary
Grey Granite
Phaneritic Felsic Intrusive Igneous Rock
igneous
Pearl (Biogenic)
Nacre / Calcium Carbonate (CaCO3)
mineral
Obsidian
Volcanic Glass (Amorphous SiO2)
igneous
Sunstone
Aventurine Feldspar (Plagioclase Feldspar with inclusions)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Goldstone and Aura Quartz
Cuprous Glass (Goldstone) and Titanium-coated SiO2 (Aura Quartz)
Mineral/Glass Specimen