Galena (lead ore)
Galena, PbS (lead sulfide)
mineral
Category
Industrial By Product
Browse industrial by product specimens identified by the Rock Identifier community.
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Pumice
Pumice (a highly vesicular volcanic rock)
igneous
Galena
Galena (lead sulfide, PbS)
mineral
Metallic sulfide mineral specimen, likely pyrite
Pyrite (FeS₂), possibly mixed with marcasite or another iron sulfide
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Iridescent bismuth crystal
Bismuth (Bi), commonly laboratory-grown and oxide-coated
mineral
Tiger’s-eye pendant
Chatoyant quartz, primarily fibrous quartz pseudomorph after crocidolite; SiO₂
gemstone
Black tumbled stone, likely hematite
Hematite (Fe₂O₃); identification is uncertain from the image alone
mineral
Hematite
Iron(III) oxide, Fe2O3
mineral
Dumortierite Quartz
Dumortierite in Quartz (Al6O3(BO3)(SiO4)3)
mineral
Limonite
FeO(OH)·nH2O
mineral
Milky quartz with iron-oxide staining
Quartz (SiO₂), likely with limonite/goethite inclusions
mineral
Polished agate/chalcedony fragment (probable)
Microcrystalline quartz, SiO₂; chalcedony with possible iron-oxide banding
gemstone
Banded Chert
Microcrystalline Quartz (SiO2)
sedimentary
Blue Aragonite
Aragonite (Calcium Carbonate, CaCO3)
mineral
Vesicular basalt (possibly slag-contaminated)
Basalt; chiefly plagioclase and pyroxene, with possible olivine and secondary minerals
igneous
Quartzite
Quartzite (primarily SiO2)
metamorphic
Native copper-rich iron meteorite (likely Canyon Diablo/meteorite-like specimen)
Iron–nickel alloy, chiefly kamacite and taenite (Fe-Ni), with oxidized copper/iron sulfide inclusions
meteorite
Limonite
FeO(OH)·nH2O
mineral
Tumbled Hematite
Iron(III) oxide (Fe2O3)
mineral
Likely galena (lead sulfide)
Galena, PbS
mineral
Quartz vein specimen, likely milky quartz with iron-stained host rock
Quartz (SiO₂), possibly with chalcedony and sulfide/oxide-bearing matrix
mineral
Limonite
FeO(OH)•nH2O
mineral
Green Jadeite
NaAlSi2O6 (Sodium Aluminum Silicate)
metamorphic
Quartz River Stone
Silicon Dioxide (SiO2)
sedimentary
Build-A-Bear Plush (Non-Geological)
Polyester fibers (C10H8O4)n and Synthetic Polymers
Anthropogenic / Non-mineral
Unable to identify - Image contains non-geological items
N/A
Iron-stained quartzite or ironstone pebble
Quartzite (mostly SiO₂) with iron-oxide/hydroxide minerals, likely hematite/goethite
metamorphic
Black tourmaline (likely schorl)
Schorl, NaFe3Al6(BO3)3Si6O18(OH)4
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace impurities of Titanium, Manganese, or Iron
mineral
Epidote
Ca2(Al,Fe)3(SiO4)3(OH)
mineral
Asphalt
Asphalt concrete
sedimentary
Specular Hematite with Quartz and Limonite
Hematite (Fe2O3) with Quartz (SiO2) and Limonite (FeO(OH)·nH2O)
Mineral
Hematite
Hematite, Iron(III) oxide (Fe2O3)
mineral
Epidote with Quartz
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
metamorphic
Hematite Beads
Hematite (Fe2O3)
Mineral
Specular Hematite
Hematite (Fe2O3)
mineral
Rhodonite
Rhodonite (Manganese Iron Magnesium Calcium Silicate)
mineral
Golden mica-bearing feldspar pegmatite
Muscovite (KAl₂(AlSi₃O₁₀)(OH)₂) with potassium feldspar, likely pegmatitic granite
igneous
Yellow calcite crystal cluster with calcite fragment
Calcite, calcium carbonate (CaCO₃)
mineral
Blue Kyanite
Kyanite (Al2SiO5)
mineral
Kyanite (within Quartz)
Kyanite (Al2SiO5) in crystalline Quartz base (SiO2)
metamorphic