Sandstone (Quartzite-rich Cobble)
Clastic sedimentary rock (primarily SiO2)
Category
Browse mineral (treated) specimens identified by the Rock Identifier community.
Sandstone (Quartzite-rich Cobble)
Clastic sedimentary rock (primarily SiO2)
Fossilized Shark Tooth
Fossil Chondrichthyes (various genera such as Carcharias or Odontaspis)
Septarian Nodule (Septarian Dragon Stone)
Septarian concretion (composition: Calcite CaCO3, Aragonite CaCO3, and Limestone/Clay)
Granite
Phaneritic Intrusive Igneous Rock (composed of Quartz, Feldspar, and Mica)
Rutilated Quartz (beads)
SiO2 with TiO2 inclusions (Titanium Dioxide inclusions within Quartz)
Granodiorite
Granodiorite (Quartz + Plagioclase + Alkali Feldspar + Biotite/Hornblende)
Basalt
Mafic Volcanic Rock (composed of plagioclase, pyroxene, and olivine)
Lapis Lazuli
Lapis lazuli (Mainly Lazurite: Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
Himalayan Pink Salt
Halite (NaCl)
Unakite
Unakite (altered granite)
Granite (Core Sample)
Phaneritic Felsic Igneous Rock (Granite)
Schist
Mica Schist (Group of medium-grade metamorphic rocks)
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
Yellow Ocher / Limonite
FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide)
Pyrite
Iron Sulfide (FeS2)
Celestine (Celestite)
Strontium sulfate (SrSO4)
Jade (Nephrite or Jadeite)
Nephrite: Ca2(Mg,Fe)5Si8O22(OH)2 (amphibole mineral); Jadeite: NaAlSi2O6 (pyroxene mineral)
Diamond
Diamond (pure Carbon, C)
Chrysocolla Chalcedony
Hydrated Copper Phyllosilicate (Cu,Al)2H2Si2O5(OH)4 + SiO2
Quartz (specifically a water-worn river pebble)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Diamond
Native Carbon (C)
Gold-bearing Quartz
Auriferous Quartz (SiO2 with Native Gold inclusion)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Milky Quartz (among River Rock)
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz (Beach Pebble)
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Magnetite (potentially Hematite-rich)
Magnetite (Fe3O4)
Schorl (Black Tourmaline) in Quartz and Feldspar
NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
Corundum (Sapphire/Ruby in Matrix)
Corundum (Al2O3)
Diamond (Cluster Ring)
Carbon (C)
Milky Quartz (Common Quartz)
Quartz (Silicon Dioxide, SiO2)
Rose Quartz
Silicon Dioxide with traces of Titanium, Iron, or Manganese (SiO2)
Diamond (appearing in jewelry)
Diamond (pure Carbon, C)
Diamond
Diamond (pure native carbon, C)
Rough Diamond
Diamond (C)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Rose Quartz
Pink Quartz (SiO2)