Ironstone (Limonite/Hematite concretion)
Ferruginous Siltstone / Goethite (FeO(OH))
sedimentary
Category
Anthropic Metallic Specimen
Browse anthropic metallic specimen specimens identified by the Rock Identifier community.
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Weathered sandstone (probable)
Quartz-rich sandstone, largely composed of cemented quartz grains (SiO₂)
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Basalt (River Pebble)
Extrusive mafic igneous rock
igneous
Bismuth
Native Bismuth (Bi)
mineral
Iridium sand or Osmium-Iridium nugget
Iridosmine / Osmiridium (Platinoid grouping)
mineral
Chalcopyrite (Peacock Ore)
Chalcopyrite (CuFeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite (Fool's Gold) in Matrix
Iron Sulfide (FeS2)
mineral
Red Aventurine
Quartz variety (SiO2 with Hematite/Goethite inclusions)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Gold-bearing sulfide ore, likely gossan or quartz-vein material
Native gold (Au) with probable iron oxides/hydroxides and sulfides, possibly quartz matrix
mineral
Barite
Barium sulfate (BaSO4)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Blue Aura Quartz
Silicon Dioxide (SiO2) with metallic vapor coating
mineral
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
mineral
Schorl (Black Tourmaline) in Quartz/Feldspar Matrix
NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
mineral
Magnetite / Iron Ore
Magnetite (Fe3O4)
mineral
Basalt River Stone
Aphanitic Mafic Igneous Rock
igneous
Basalt (River Rock Cobble)
Extrusive mafic igneous rock
igneous
Not a geological specimen
N/A (man-made object)
N/A
Pyrite
Iron Pyrite (FeS2)
mineral
Basalt River Pebble
Basalt
igneous
Pyrite (Pseudomorph)
Iron Sulfide (FeS2)
mineral
Basalt
Basalt (Extrusive Igneous Rock)
igneous
Sunstone
Heliolite (Sodium Calcium Aluminum Silicate with Iron or Copper inclusions)
mineral
Nuummite
Nuummite (Orthoamphibole rock / Anthophyllite-Gedrite blend)
metamorphic
Hematite
Iron(III) oxide (Fe2O3)
mineral
Basalt (River Stone)
Basalt (Mafic volcanic rock)
igneous
Basalt River Pebble
Basalt
igneous
Basalt
Basalt (Aphanitic Mafic Igneous Rock)
igneous
Botryoidal Hematite (Kidney Ore)
Hematite (Fe2O3)
Mineral
Basalt River Stone
Basalt (Mafic volcanic rock)
igneous
Fluorite
Calcium Fluoride (CaF2)
mineral
Gabbro (River Cobble)
Gabbro (mafic intrusive rock)
igneous
Gold Nugget
Native Gold (Au)
mineral
Basalt pebble
Basalt (Mafic volcanic rock)
igneous