Milky Quartz
Silicon Dioxide (SiO2)
Category
Browse mineral (tectosilicate) specimens identified by the Rock Identifier community.
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (River Pebble)
Silicon Dioxide (SiO2)
Quartz (Sunstone-like Chalcedony)
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon dioxide (SiO2)
Greenstone with Quartz Veining
Epidiorite or Metabasalt with SiO2 (Quartz) veins
Quartz
Silicon Dioxide (SiO2)
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
Greenstone
Metabasalt / Greenstone
Milky Quartz Vein with Iron Staining
Silicon Dioxide (SiO2)
Quartz (Quartzite)
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Gossan
Iron-rich regolith (mainly Limonite and Goethite, FeO(OH)·nH2O)
Bumblebee Jasper (technically Bumblebee Stone)
Calcite, Aragonite, and Realgar/Orpiment mixture (SiO2 + CaCO3 + As2S3/As2S2)
Geode (Unopened)
Silicon Dioxide (SiO2) in sedimentary vugs
Olivine in Basalt (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4 (Mineral) within Basalt (Rock)
Granite Pebble (Salt and Pepper Granite)
Felsic Intrusive Igneous Rock (Granite)
Granite Gneiss
Gneiss (High-grade regional metamorphic rock)
Geode (Unopened)
Crystalline Quartz or Chalcedony filled Geode (SiO2)
Dyed Dragon Vein Agate
Silicon Dioxide (SiO2) with artificial pigment
White Quartz Star
Silicon Dioxide (SiO2)
Malachite
Copper carbonate hydroxide, Cu2CO3(OH)2
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Magnetic Sand Grain / Magnetite Pellet
Magnetite (Fe3O4)
Amygdaloidal Basalt
Basalt with secondary mineral infilling
River Pebble (likely Quartzite or Basalt)
Quartzite (SiO2 as primary mineral)
Quartzite
Quartzite (Primary mineral: SiO2)
Quartzite
Quartzite (Primary mineral: SiO2)
Quartzite
Quartzite (Primary mineral: SiO2)
Quartzite
Quartzite (Primary mineral: SiO2)
Red Jasper
Jasper (Silicate mineral - SiO2)
Quartzite
Quartzite (Primary mineral: SiO2)
Abalone Shell (Nacre)
Aragonite (CaCO3) - Biogenic Mineral
Fossilized Shark Tooth (Otodus obliquus)
Otodus obliquus (Mineral: Fluorapatite)
Jasper
Jasper (Silicate mineral, SiO2)
Quartzite
Quartzite (Primary mineral: SiO2)
Aventurine (Tan/Cream colored)
Quartz (SiO2) with mineral inclusions
Quartzite
Quartzite (Primary mineral: SiO2)
Quartzite
Quartzite (Primary mineral: SiO2)
Basalt with Epidote (Flowerstone-like texture)
Amygdaloidal Basalt (silicate mineral inclusions)
Chrysoprase
Chalcedony with nickel impurities (SiO2)