Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Category
Anthropogenic (Man Made Material)
Browse anthropogenic (man made material) specimens identified by the Rock Identifier community.
Quartz (likely)
Quartz (SiO2 - Silicon Dioxide)
Mineral
Quartz
Quartz (SiO₂)
Mineral
Cat's Eye Moonstone (Simulated/Synthetic or natural Cat's Eye Quartz/Glass)
There is no single scientific name. The appearance suggests either: Moonstone (feldspar group), Cat's Eye Quartz (SiO2), Apatite (Ca5(PO4)3(F,Cl,OH)), or most likely a synthetic material such as Fiber Optic Glass or 'Opalite' (a type of glass).
Mineral
Tiger's Eye
Tiger's Eye (a variety of Quartz, SiO₂)
Mineral (specifically a gemstone variety)
Diamond (Rough)
Diamond (Carbon, C)
Mineral
Pyrite
Pyrite (FeS2)
Mineral
Sandstone (with possibly iron oxides and other minerals)
Sandstone
Sedimentary rock
Citrine
Quartz (SiO₂)
Mineral
Rutilated Quartz
Quartz (SiO2) with Rutile (TiO2) inclusions
Mineral
Lepidolite
K(Li,Al)3(Si,Al)4O10(F,OH)2
Mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Sodalite
Sodalite (Sodium Aluminum Silicate Chloride), Na8(Al6Si6O24)Cl2
Mineral
Quartz
Quartz (SiO₂)
Mineral
Quartz
Quartz (SiO₂)
Mineral
Mookaite Jasper
Siliceous (chert) sedimentary rock, a form of Jasper
Sedimentary
Quartz Geode/Druzy Quartz
Quartz (SiO₂)
Mineral
Chert (Nodule)
Silicon Dioxide (SiO2)
sedimentary
Agate
Chalcedony (cryptocrystalline quartz)
Mineral
Greenschist
Greenschist facies rock
Metamorphic
Unakite
Epidote-Feldspar rock
Metamorphic Rock
Magnetite
Magnetite (Fe3O4)
Mineral
Aquamarine and clear quartz
Aquamarine (Be3Al2Si6O18), Quartz (SiO2)
Mineral
Granite
Granite (a common rock type, not a single mineral; composed primarily of Quartz, Feldspar (Orthoclase and Plagioclase), and Mica (Biotite and/or Muscovite) and/or Amphibole)
Igneous
Cockle Shell (Fossil or Recent)
Class Bivalvia, Family Cardiidae (e.g., Cerastoderma edule for common cockle)
Sedimentary (Biogenic, a type of fossil)
Banded Gneiss
Gneiss (typically quartz, feldspar, mica, amphibole composition)
metamorphic
Quartz
Quartz (SiO₂ - Silicon Dioxide)
Mineral
Rutilated Quartz
SiO2 with TiO2 inclusions (Rutile)
Mineral
Amber
(C10H16O)n – an amorphous organic substance, primarily composed of polymerized isoprenoids.
Mineral
Dyed Howlite (simulating Lavender/Purple Jade or Charoite)
Howlite: Ca2B5SiO9(OH)5 (when natural)
Mineral
Basalt
Basalt
igneous
Pyrite
Iron Pyrite (FeS₂)
Mineral
Fossilized Wood (Petrified Wood)
Silicified Wood (primarily quartz/chalcedony replacing organic matter)
Sedimentary (with some aspects of mineral replacement)
Peridot
Olivine (specifically, the gem-quality variety forsterite, (Mg,Fe)2SiO4)
Mineral
Orange Calcite (likely polished specimen)
Calcite
Mineral
Granite
Granite (a felsic intrusive igneous rock)
igneous
Topaz
Topaz (Al2SiO4(F,OH)2)
Mineral
Turquoise
Hydrated phosphate of copper and aluminium - CuAl6(PO4)4(OH)8·4H2O
mineral
Quartz (variety of colors)
SiO2 (Silicon Dioxide)
Mineral
Pyrite
Pyrite (Iron Disulfide), FeS2
Mineral
Petrified Wood
Silicified wood, primarily composed of Quartz (SiO2)
Mineral, often found in sedimentary deposits
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral