Native copper nugget
Copper (Cu), commonly with cuprite and copper-oxide alteration
mineral
Category
Mineral Based Human Made Alloy
Browse mineral based human made alloy specimens identified by the Rock Identifier community.
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Sedimentary Rock with Crafts (Pet Rock)
Sedimentary rock decorated with synthetic materials
sedimentary
Sandstone (likely Ferruginous)
Sandstone (SiO2 with iron oxides)
sedimentary
Red Sandstone
Arenite
sedimentary
Chert Arrowhead (Flint Projectile Point)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Tumbled Stone Collection (Fluorite, Sodalite, Moss Agate, Amethyst/Charoite, and Grey Agate)
Silica (SiO2) and Calcium Fluoride (CaF2) based minerals
mineral
Copper-Bearing Sulfide Ore (likely Chalcopyrite or Bornite)
Chalcopyrite (CuFeS2) or Bornite (Cu5FeS4) in host rock
mineral
Geode half
Geode (often quartz/chalcedony based)
sedimentary or igneous
Sandstone (likely Graywacke or Siltstone variety)
Clastic Sedimentary Rock (SiO2 with assorted mineral fragments)
sedimentary
Red Sandstone
Arenite (primarily SiO2 with Fe2O3)
sedimentary
Chert (Common Chert)
Cryptocrystalline Quartz (SiO2)
sedimentary
Red Sandstone
Arenite (predominantly Quartz with Hematite cementation)
sedimentary
Quartz pebble
Silicon Dioxide (SiO2)
mineral
Epidote
Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
Mineral
Chert (specifically as a lithic artifact/projectile point)
Chert (Silicon dioxide, SiO2)
sedimentary
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Chert
Microcrystalline quartz (SiO2)
sedimentary
Sandstone (Red)
Arenite (primarily Quartz, SiO2, with Iron Oxide cement)
sedimentary
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Rhodonite Tumbled Chips
Manganese silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Green Glass Slag
Amorphous Silicon Dioxide (SiO2) with metal oxide impurities
mineraloid (man-made)
Green Aura Quartz (Titanium treated Kyanite or Quartz)
Silicon Dioxide (SiO2) or Aluminum Silicate (Al2SiO5) with Titanium/Metal Oxide coating
mineral (man-made aura treatment)
Pitted Sedimentary Rock / Cupstone
Sedimentary rock with weathering pit (arenite / sandstone)
sedimentary
Gold Nugget
Native Gold (Au)
mineral
Sandstone
Arenite
sedimentary
Sedimentary Breccia
Clastic Breccia (CaCO3/SiO2 matrix)
sedimentary
Turquoise
CuAl6(PO4)4(OH)8·4H2O (Hydrated copper and aluminum phosphate)
mineral
Conglomerate
Conglomerate (Clastic Sedimentary Rock)
sedimentary
Chrysocolla
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O
mineral
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
mineral
Basalt
Basalt (Mafic volcanic rock)
igneous
Sandstone (Ferruginous)
Arenite (Fe-rich)
sedimentary
Opalite
Synthetic glass / Opalized glass
gemstone
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Plume Agate or Moss Agate
Agate (SiO2)
mineral
Painted River Rock
Anthropogenic-modified Siliciclastic Sedimentary Rock
Sedimentary
Amethyst
Silicon Dioxide with iron impurities (SiO2)
mineral
Red Garnet
Pyrope or Almandine (Silicate group, X3Y2(SiO4)3)
Mineral
Sodalite
Na8(Al6Si6O24)Cl2 (Sodium Aluminum Silicate Chloride)
mineral
N/A (The provided image is a storyboard/digital document)
N/A
Iron Meteorite
Meteoritic Iron (Fe-Ni alloy)
meteorite
Dyed Agate Geode
Silicon Dioxide (SiO2) - Chalcedony variety
mineral