Tiger's Eye
Silicon dioxide (SiO2) with fibrous inclusions of crocidolite (riebeckite) that have been altered to limonite and then replaced by quartz
Category
Browse mineral (variant of quartz) specimens identified by the Rock Identifier community.
Tiger's Eye
Silicon dioxide (SiO2) with fibrous inclusions of crocidolite (riebeckite) that have been altered to limonite and then replaced by quartz
Quartz (specifically Quartzite or Massive Quartz)
Silicon Dioxide (SiO2)
Red Quartzite
Quartzite (primarily SiO2 with trace Fe2O3)
Quartzite
Quartzite (SiO2)
Quartzite with Garnet
Garnetiferous Quartzite (SiO2 + X3Y2(SiO4)3)
River Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Banded Gneiss
Gneiss (pronounced "nice")
Granite
Granite
Gold in Matrix
Native Gold (Au)
Geode (Unopened)
Siliceous Septarian Concretion / Geode (SiO2)
Quartzite Pebble (with Iron Inclusions)
Quartzite (primarily SiO2 with Fe2O3/FeOOH impurities)
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions of Iron Oxide)
Dalmatian Stone
Peralkaline rhyolite
Blue Quartzite (Aventurine)
Silicon Dioxide (SiO2) with mineral inclusions
Quartz / Quartzite
Silicon Dioxide (SiO2)
Lazulite
Lazulite (Mg,Fe2+)Al2(PO4)2(OH)2
Pink Tourmaline in Quartz Matrix
Elbaite (Na(Li,Al)3Al6(Si6O18)(BO3)3(OH)4) in Quartz (SiO2)
Granite
Phaneritic plutonic rock (Quartz, Feldspar, Mica)
Granite
Phaneritic Plutonic Felsic Rock (KAlSi3O8 - SiO2 - NaAlSi3O8)
Sandstone (Quartzose)
Arenite (primarily SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartzite
Metamorphosed Quartz Sandstone (SiO2)
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
Quartz (Smoky/Milky Variety)
Silicon Dioxide (SiO2)
Wishing Stone (Quartz-veined Siltstone or Graywacke)
Hydrothermal Quartz vein in matrix of SiO2 (Quartz) and Al2O3 (Clay minerals)
White Quartz
Silicon Dioxide (SiO2)
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with traces of titanium, iron, or manganese
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Pink Tumbled Quartz (Dyed)
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Rose Quartz
Silicon Dioxide with trace inclusions (SiO2)
Yellow Quartz (Citrine-colored Quartz Pebble)
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Gneiss (with Quartzite and Mica)
Gneiss
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)