Pyrite
Iron Pyrite (FeS2)
mineral
Category
Mineral (Synthetic Paper And Ink Polymorph)
Browse mineral (synthetic paper and ink polymorph) specimens identified by the Rock Identifier community.
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Chert
Microcrystalline Quartz (SiO2)
sedimentary
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Ruby (Corundum)
Aluminum Oxide (Al2O3) with Chromium traces
mineral
Chert (or Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Geode with Quartz/Chalcedony
Silicon Dioxide (SiO2)
sedimentary
Sandstone
Arenite (SiO2 primarily)
sedimentary
Sandstone (with secondary weathering/concretion)
Arenite (composed primarily of Quartz, SiO2)
sedimentary
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
mineral
Sandstone (Pebble)
Arenite (SiO2 based)
sedimentary
Limonite Concretion
Goethite/Limonite concretion (FeO(OH)·nH2O)
sedimentary
Milky Quartz with Chlorite Schist Inclusions
Quartz (SiO2) with Chlorite Group silicates (typically (Mg,Fe)3(Si,Al)4O10(OH)2)
metamorphic
Ruby (Raw Corundum)
Corundum (Al2O3) with Chromium traces
mineral
Pink Quartz
Silicon Dioxide (SiO2)
mineral
Sodalite
Na8Al6Si6O24(Cl,OH)2
mineral
Kyanite
Al2SiO5
mineral
Black Tourmaline
Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH,F,O)4)
mineral
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Arsenopyrite in Sulphide Ore
Arsenopyrite (FeAsS)
mineral
Basalt with Quartz Vein
Mafic volcanic rock with hydrothermal SiO2 filling
igneous
Geode
Quartz / Chalcedony nodule
sedimentary
Larimar
NaCa2Si3O8(OH)
gemstone
Turquoise
CuAl6(PO4)4(OH)8·4H2O (Hydrous phosphate of copper and aluminum)
mineral
Clear Quartz (Tumbled)
Silicon Dioxide (SiO2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Milky Quartz
Quartz (SiO2)
mineral
Dendritic Agate
Chalcedony (Silicon Dioxide) with Manganese or Iron Oxide inclusions
mineral
Feldspar
KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8
mineral
Chert (Jasper)
Microcrystalline Quartz (SiO2) with Iron Oxide impurities
sedimentary
Fossilized Shark Tooth
Carcharhinus sp. (likely Bull or Requiem shark family)
sedimentary
Milky Quartz with Chlorite inclusions
Silicon Dioxide (SiO2) with Chlorite group minerals
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Gold Ore
Native Gold (Au) in Matrix
mineral
Chrysocolla
Hydrated copper phyllosilicate, (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Generic Rock Fragment
Rock Fragment
sedimentary
Yellow Quartz
Silicon Dioxide (SiO2)
mineral
Bloodstone
Chalcedony (Variety: Bloodstone / Heliotrope), SiO2
mineral
Gold in Quartz Matrix
Gold (Au) embedded in Quartz (SiO2)
mineral
Limonite
FeO(OH)•nH2O
mineral
Pink Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Fairy Stone (Staurolite Cross)
Staurolite (Fe2Al9O6(SiO4)4(O,OH)2)
mineral