Cupronickel Coin
Copper-Nickel Alloy (typically 75% Cu, 25% Ni)
anthropic metallic specimen
Category
Anthropic Metallic Specimen
Browse anthropic metallic specimen specimens identified by the Rock Identifier community.
Sandstone-based Concrete Fragment
Cementitious Composite with Sedimentary Aggregate
sedimentary (man-made/anthropogenic)
Fired Clay Brick (Anthropic Rock substitute)
Anthropogenic polycrystalline ceramic (predominantly Mullite and Quartz: Al6Si2O13 + SiO2)
metamorphic (man-made / anthropic)
Hematite
Iron(III) oxide (Fe2O3)
Mineral
Hematite Nodules (Moqui Marbles style)
Iron Oxide (Fe2O3)
sedimentary
Micrometeorite (Spherule)
Extraterrestrial Accretion Spherule
mineral
Pyrite in Quartz (Drill Core)
Silicon Dioxide (SiO2) with Iron Sulfide (FeS2) inclusions
igneous/metamorphic (hydrothermal)
Hematite
Iron(III) oxide (Fe2O3)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Pyrite Cubes in Matrix
Iron Disulfide (FeS2) in Host Matrix
mineral side rock
Pyritic Quartzite
Metequartzite with FeS2 (Pyrite) inclusions
metamorphic
Gold Ore in Quartz
Auriferous Quartz (Au + SiO2)
igneous
Labradorite
(Ca, Na)(Al, Si)4O8
mineral
Botryoidal Hematite
Hematite (Iron(III) oxide, Fe2O3)
mineral
Hematite
Iron(III) oxide (Fe2O3)
Mineral
Healer's Gold (Pyrite and Magnetite in Schist)
Magnetite (Fe3O4) and Pyrite (FeS2) in Mica Schist
metamorphic
Hematite Nodules (Moqui Marbles style)
Iron Oxide (Fe2O3)
mineral
Sunstone
Plagioclase Feldspar (containing (Ca,Na)(Al,Si)4O8 with Hematite or Copper inclusions)
mineral
Magnetite / Iron-Rich Concretion
Magnetite (Fe3O4) or Bog Iron Limonite
mineral
Hematite
Hematite (Fe2O3)
mineral
Magnetite (Lodestone)
Magnetite (Fe3O4)
mineral
Chalcopyrite
Copper Iron Sulfide (CuFeS2)
mineral
Turquoise (with Hematite)
CuAl6(PO4)4(OH)8·4H2O
mineral
Quartz crystal with Pyrite inclusions
Silicon Dioxide (SiO2) with Iron Sulfide (FeS2)
mineral
Metallic Ornament / Jewelry
N/A - This is an artificial object, not a geological specimen.
This appears to be a man-made metallic object, likely jewelry, not a natural rock, mineral, or geological specimen.
Quartz with Chalcopyrite and Pyrite
Silicon Dioxide (SiO2) with Copper Iron Sulfide (CuFeS2)
mineral
Pyritic Shale
Carbonaceous Shale with Iron Pyrite (FeS2)
sedimentary
Hematite
Ferric Oxide (Fe2O3)
mineral
Tiger Iron
Tiger Iron (Hematite, Red Jasper, and Chert/Tiger's Eye composite)
metamorphic
Molybdenite in Quartz
Molybdenite (MoS2) with Quartz (SiO2)
mineral
Gold Ore
Native Gold in Quartz (Au)
mineral
Gold Ore (in Quartz/Gossan matrix)
Native Gold (Au) in Limonite/Quartz matrix
mineral
Not a rock, mineral, or geological specimen
N/A
Silicon
Silicon (Si)
mineral
Silver (Native Element)
Silver (Ag) in an alloy of 90% Silver and 10% Copper
mineral
Rainbow Hematite Ring
Iron(III) oxide (Fe2O3) with thin-film coating
mineral
Carborundum
Silicon Carbide (SiC)
mineral
Chondrite Meteorite
L or H Ordinary Chondrite
meteorite
Pyrite in Quartz
Iron Sulfide (FeS2) in Silicon Dioxide (SiO2)
Mineral
Peacock Ore (Chalcopyrite/Bornite)
Bornite (Cu5FeS4) or iridescent treated Chalcopyrite (CuFeS2)
Mineral
Tiger's Eye (with Hematite/Jasper)
SiO2 (Silicon Dioxide) with Fe2O3 (Hematite)
mineralogical
Sunstone
Aventurine Feldspar (Plagioclase or Oligoclase)
mineral