Serpentinite
Serpentinite (composed primarily of mineral group (Mg,Fe,Ni,Al)3Si2O5(OH)4)
Category
Browse not a rock (man made industrial metal) specimens identified by the Rock Identifier community.
Serpentinite
Serpentinite (composed primarily of mineral group (Mg,Fe,Ni,Al)3Si2O5(OH)4)
Slag (Industrial Glass Slag)
Amorphous Silicate Glass (often containing Al, Ca, Mg, and Ti oxides)
Limonite (Ironstone)
Hydrated Iron(III) Oxide-hydroxide (FeO(OH)·nH2O)
Granite Pebble
Granite (composition of Quartz, Alkali Feldspar, and Plagioclase)
Granite
Phaneritic Igneous Rock
Granite
Felsic intrusive igneous rock
Granite
Felsic intrusive igneous rock
Diamond
Carbon (C)
Quartzite (Milky Quartz pebble)
Silicon Dioxide (SiO2)
Riverstone Quartzite (Iron-stained)
Quartzite (primarily SiO2 with Limonite/Goethite staining)
Granodiorite
Granodiorite (containing Quartz, Plagioclase Feldspar, Biotite, and Hornblende)
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)3Si2O5(OH)4
Quartz Vein in Siltstone
Silicon Dioxide (SiO2) within Sedimentary/Metamorphic Matrix
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Granite
Granite (Felsic Plutonic Rock)
Quartzite
Quartzite (SiO2)
Red Sandstone (Iron-Rich)
Arenite (Fe2O3)
Granite
Intrusive igneous rock primarily composed of quartz, alkali feldspar, and plagioclase
Sandstone (Whetstone/Sharpening Stone)
Siliciclastic Sandstone (SiO2 dominant)
Diamond (in Jewelry)
Carbon (C)
Pink Granite
Phaneritic Felsic Igneous Rock (Granite)
Quartz Vein Rock
Quartz (Silicon Dioxide, SiO2)
Likely tumbled dark volcanic rock
Probably basalt or basaltic andesite; exact identification is uncertain from the image
Diamond
Diamond (pure Carbon, C)
Granite
Intrusive Igneous Rock
Likely weathered iron-rich meteorite
Unclassified stony-iron or iron meteorite candidate; confirmation requires laboratory testing
Granite
Intrusive igneous rock (Felsic)
Quartzite Pebble
Quartzite (SiO2)
Diamond ring
Diamond (crystalline carbon, C)
Iron-rich meteorite candidate
Unclassified iron meteorite, possibly an ordinary chondrite or weathered iron oxide-rich meteorite
Quartz Vein in Schist
Quartz (SiO2) in Pelitic Schist
Serpentinite with Quartz/Calcite Veining
Serpentinite (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4
Chert (Iron-stained)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Gold in Quartz Matrix
Native Gold (Au) with Quartz (SiO2) and Slate/Shale
Milky Quartz
Silicon Dioxide (SiO2)
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
Serpentine (Serpentinite)
Antigorite, Lizardite, or Chrysotile (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
Diamond (set in jewelry)
Diamond (Carbon, C)
Granite
Granite (composed primarily of Quartz, Feldspar, and Mica)
Pumice
Pumice (Vesicular volcanic glass)
Grey Chalcedony
Silicon Dioxide (SiO2)