Quartz Geode
Crystalline Quartz (Silicon Dioxide, SiO2)
mineral
Category
Mineral Like Byproduct (Technogenic)
Browse mineral like byproduct (technogenic) specimens identified by the Rock Identifier community.
Red Sandstone
Arenite (Fe2O3 rich)
sedimentary
Sandstone (Graywacke type)
Clastic Sedimentary Rock (Lithic Sandstone)
sedimentary
Blue Goldstone
Aventurine Glass (Silicon Dioxide with metal inclusions)
man-made glass mineral simulant
Granite
Phaneritic Granocrystalline Igneous Rock
igneous
Gneiss
Gneissic Metamorphic Rock
metamorphic
Sandstone Pebble with Iron Staining
Clastic Sedimentary Rock (primarily Quartz with Fe2O3 oxides)
sedimentary
Sandstone (Quartz Arenite)
Sandstone (SiO2 with possible mineral cements)
sedimentary
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Common or Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Milky Quartz with Dendritic Inclusions
Silicon Dioxide (SiO2)
mineral
Black Freshwater Pearls
Biogenic Calcium Carbonate (Aragonite/Calcite), CaCO3
mineral
Quartz (Gravel Pebble)
Silicon Dioxide (SiO2)
mineral
Ferruginous Quartz (Hematoid Quartz)
Silicon Dioxide (SiO2) with Hematite or Goethite inclusions
mineral
Pink Orthoclase Feldspar with Dendrites
Orthoclase (KAlSi3O8) with Manganese Oxide dendrites
mineral
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
mineral
Blue Sapphire
Corundum (Al2O3)
mineral
Petrified Wood (Agatized/Silicified Wood)
Silicified Wood / Chalcedony (SiO2)
sedimentary
Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Olivine (Peridot)
Magnesium Iron Silicate ((Mg, Fe)2SiO4)
mineral
Rose Quartz
Silicon dioxide (SiO2)
mineral
Howlite
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)
mineral
Shale with Iron Oxide Staining
Fissile Mudstone (primarily clay minerals and quartz)
sedimentary
Amethyst (Rough Crystal)
Silicon Dioxide (SiO2 with ferric iron impurities)
mineral
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Turquoise
Hydrated phosphate of copper and aluminium - CuAl6(PO4)4(OH)8·4H2O
mineral
Sandstone
Arenite (SiO2 based typically)
sedimentary
Serpentinite (often containing Jadeite/Nephrite)
Antigorite-rich Serpentine Rock, (Mg, Fe)3Si2O5(OH)4
metamorphic
Sandstone (Quartz-rich)
Arenite (primarily SiO2)
sedimentary
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Aquamarine
Beryl (Be3Al2Si6O18)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Agate
Agate (Silicon Dioxide, SiO2)
mineral
Agate
Silicon Dioxide (SiO2) - Banded Chalcedony
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Blue Lace Agate
Chalcedony (Silicon Dioxide, SiO2)
mineral
Blue Lace Agate
Chalcedony (SiO2)
mineral
Quartz (Milky/Gray variety)
Silicon Dioxide (SiO2)
mineral