Rutilated Quartz
Quartz (SiO2) with Rutile (TiO2) inclusions
Category
Browse metamorphic rock (variety of quartz) specimens identified by the Rock Identifier community.
Rutilated Quartz
Quartz (SiO2) with Rutile (TiO2) inclusions
Chert (Jasper/Mudstone)
Microcrystalline Quartz (SiO2)
Yellow Quartz Pebble
Silicon Dioxide (SiO2)
Serpentinite
Serpentinite (composed primarily of serpentine group minerals like lizardite, antigorite, and chrysotile)
River Quartz Pitting / Quartzite Pebble
Quartzite (primarily SiO2)
Red Jasper
Jasper (a variety of Chalcedony, SiO₂)
Schist
Schist
Citrine
Silicon Dioxide (SiO2)
Granite or Granitic Gneiss Pebble
Granite (felsic intrusive igneous rock) or Gneiss
Granitic Gneiss
Gneiss (Complex silicate composition)
Greenish rock with white veins, possibly epidote or chlorite bearing rock with quartz/calcite veins
Altered mafic rock or Epidosite
Pyrite
Iron Disulfide (FeS2)
Pyrite
Iron Sulfide (FeS2)
Rainbow Moonstone with Black Tourmaline
White Labradorite (Feldspar variety, (Na,Ca)(Al,Si)4O8) with Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
Quartzite
Quartzite (primarily SiO2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Granite
Granite (Silicic Plutonic Rock)
Quartz Crystal Point
Silicon Dioxide (SiO2)
Serpentinite (Serpentine Rock)
Primarily composed of serpentine group minerals, such as antigorite, chrysotile, and lizardite. Chemical formula for serpentine minerals is (Mg,Fe)3Si2O5(OH)4.
Quartz on Chlorite Schist
Chlorite Schist (Mg,Fe)3(Si,Al)4O10(OH)2 with Quartz (SiO2)
Chert (specifically Green Chert/Jasper)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Tumbled Rose Quartz with Matrix
Rose Quartz - SiO2 (Silicon Dioxide)
Quartz Vein Rock
Quartz (Silicon Dioxide, SiO2)
Quartzite pebble
Quartzite (SiO2 dominated)
Agate
SiO2
Mica Schist
Mica Schist (Quartz-Biotite-Muscovite Schist)
Quartz Vein in Rhyolite
Silicon Dioxide (SiO2) in extrusive igneous rock
Chert (Grey-Green Var.)
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon dioxide (SiO2)
Chert (and Flint variant)
Chert (SiO2)
Corundum
Corundum (Aluminium oxide, Al2O3)
Yellow Agate
Chalcedony (cryptocrystalline Quartz), SiO2
Calcite
Calcite (CaCO₃, Calcium Carbonate)
Amethyst (Rose de France varieties or Amethystine Quartz)
Silicon Dioxide (SiO2) with iron impurities
Schist
Mica Schist (Metamorphic Rock)