Pyrite
Iron Sulfide (FeS2)
mineral
Category
Anthropogenic (Man Made Material Mimicking Sedimentary Rock)
Browse anthropogenic (man made material mimicking sedimentary rock) specimens identified by the Rock Identifier community.
Learn about Anthropogenic (Man Made Material Mimicking Sedimentary Rock) in the encyclopedia
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Banded Chert / Chalcedony
Silicon Dioxide (SiO2)
sedimentary
Fossiliferous Limestone
Biogenic Calcium Carbonate (CaCO3)
sedimentary
Fossiliferous Limestone
Bioclastic Limestone (CaCO3)
sedimentary
Agatized Fossil or Chalcedony Nodule
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
sedimentary
Limestone
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Quartz (Chert/Chalcedony variety)
Silicon Dioxide (SiO2)
mineral
Carved quartz (likely rose quartz and green aventurine/quartz)
Quartz, silicon dioxide (SiO₂); green material may be aventurine quartz or serpentine
gemstone
Fossilized Coral (Petoskey-style)
Hexagonaria percarinata (Fossilized Rugose Coral)
sedimentary
Chert (or Chalcedony)
Microcrystalline Quartz (SiO2)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Chert (Brown Variety)
Microcrystalline Quartz (SiO2)
sedimentary
Jasper
Silicon Dioxide (SiO2)
sedimentary
Red Jasper
Silicon Dioxide (SiO2)
sedimentary
Quartz (likely Chalcedony or Chert)
Silicon Dioxide (SiO2)
mineral
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Tumbled chalcedony (likely carnelian or brown agate)
Microcrystalline quartz, SiO₂; chalcedony with iron-oxide coloration
gemstone
Sandstone (Ferruginous)
Arenite (with Goethite/Limonite cement)
sedimentary
Red Jasper (Tumbled)
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Black-and-white jasper
Jasper, microcrystalline quartz (SiO₂), with contrasting white mineral inclusions
metamorphic
Fossilized Shark Tooth (Sand Tiger)
Carcharias sp. (Fossilized Tooth)
fossil
Pyrite
Iron Disulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Fossiliferous Limestone
Calcium Carbonate (CaCO3) - Limestone
sedimentary
Green Jasper
Microcrystalline Quartz (Chalcedony), SiO2
sedimentary
Pyrite in Matrix
Iron Sulfide (FeS2)
mineral
Jasper
Silicon Dioxide (Microcrystalline Quartz, SiO2)
sedimentary
Goldstone (Brown)
Aventurine glass
mineraloid (man-made)
Polished carnelian jasper / brecciated jasper
Microcrystalline quartz (SiO₂), chalcedony with iron-oxide pigments and opaque jasper fragments
gemstone
Pyrite
Iron Sulfide (FeS2)
mineral
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Tumbled jasper, likely red/brown jasper
Microcrystalline quartz (chalcedony), SiO₂, colored chiefly by iron oxides
mineral
Red Jasper
Silicon Dioxide with Hematite (SiO2 + Fe2O3)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Tumbled brown jasper (likely iron-rich chalcedony)
Jasper, opaque microcrystalline quartz (SiO₂), commonly colored by iron oxides
mineral
Chert
Microcrystalline quartz (SiO2)
sedimentary
Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Tumbled banded jasper, likely brecciated jasper
Microcrystalline quartz (SiO₂) with iron-oxide and clay inclusions
mineral