Sandstone (Ferruginous)
Sandstone (mainly SiO2 with Fe2O3 staining)
Category
Browse mineral (variety of quartz) specimens identified by the Rock Identifier community.
Sandstone (Ferruginous)
Sandstone (mainly SiO2 with Fe2O3 staining)
Chert (Jasper/Flint variety)
Silicon Dioxide (SiO2)
Chert (Iron-stained)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Yellow Jasper
Jasper (Silicon Dioxide, SiO2 with iron inclusions)
Milk Quartz (White Quartz)
Silicon Dioxide (SiO2)
Gowganda Tillite (Puddingstone)
Glacial Tillite (Diamictite) with Jasper inclusions
Jasper (Cream/Yellow variety)
Jasper (Microcrystalline Quartz, SiO2)
Chert (Pebble)
Microcrystalline to Cryptocrystalline Quartz (SiO2)
Chert (Black Flint)
Chert (Microcrystalline Quartz, SiO2)
Chert / Flint
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Nodule)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Chert (Flint)
Chert (Silicon Dioxide, SiO2)
Quartzite
Quartzite (mostly SiO2)
Red Jasper
Silicon dioxide / Quartz (SiO2 (+Fe2O3))
Conglomerate
Conglomerate rock
Quartzite Pebbles
Quartzite (SiO2)
Jasper
Silicon dioxide (SiO2)
Blue Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
Satin Spar (Selenite)
Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)
Pyrite
Iron Sulfide (FeS2)
Ferruginous Sandstone (River Pebble)
Clastic Sedimentary Rock (primarily SiO2 with Fe2O3 cement)
Beryl (Emerald variety in host rock)
Be3Al2(SiO3)6 (Silicate mineral)
Jasper
Jasper (Silica-rich microcrystalline Quartz, SiO2 with Fe2O3 impurities)
Chert (Limonite-stained)
Microcrystalline Quartz (SiO2) with iron oxides
Blue Lace Agate
Silicon Dioxide (SiO2) - Chalcedony / Quartz
Quartz Vein in Rhyolite
Silicon Dioxide (SiO2) in extrusive igneous rock
Sandstone
Sandstone (clastic sedimentary rock, composed predominantly of sand-sized minerals or rock fragments)
Quartzite
Quartzite (composed primarily of SiO2)
Chert (or Flint)
Mocrocrystalline Quartz (SiO2)
Chert (Blue-Gray Chert)
Microcrystalline quartz (SiO2)
Green Aventurine (likely)
Silicon dioxide (SiO2) with fuchsitemica inclusions
Rutilated Quartz
Quartz (SiO2) with Rutile (TiO2) inclusions
Quartzite
Quartzite (primarily SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz Vein in Pelite (Metamorphic Rock)
Hydrothermal Quartz Veining in Metasedimentary Rock (SiO2)
Gold Quartz (Auriferous Quartz)
Silicon Dioxide (SiO2) with trace Gold (Au) and Iron Oxides
Chert (Flint)
Chert (SiO2)
Chert (Flint)
Chert (SiO2)
Chert (specifically Agate/Jasper variety)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Red Jasper
Argillaceous microcrystalline quartz (SiO2 with Fe2O3 inclusions)