Quartz Pebble (Milky and Gray)
Quartz (Silicon Dioxide, SiO2)
Category
Browse mineral or sedimentary rock (with mineral inclusions) specimens identified by the Rock Identifier community.
Quartz Pebble (Milky and Gray)
Quartz (Silicon Dioxide, SiO2)
Agate
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Gneiss (Metamorphic Rock)
Gneiss
Sandstone (Ferruginous)
Arenite (Fe2O3 enriched)
Basalt with Quartz/Calcite Veins
Basalt (Aphanitic Mafic Volcanic Rock) with Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3) inclusions
Sandstone (Quartzite texture)
Arenite (SiO2 secondary)
Amber
Succinicum (C10H16O)
Red Sandstone
Arenite (with Iron Oxide)
Dalmatian Stone
Dalmatian Jasper (Aplitic Rock)
Gneiss
Gneiss (High-grade metamorphic rock)
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Chert Nodule (Fossiliferous Chert)
Microcrystalline Quartz (SiO2)
Sandstone
Arenite (primarily SiO2)
Hematite
Iron(III) oxide (Fe2O3)
Sandstone (Calcareous Sandstone)
Calcareous Sandstone (primarily SiO2 with CaCO3 cement)
Red Jasper
Silicon Dioxide (SiO2) with impure Iron oxides
Liesegang Banded Sandstone (Wonderstone)
Ferruginous Sandstone with Liesegang Rings
Geode (unopened)
SiO2 - Chert-shelled concretion (mostly Quartz)
Sandstone
Arenite (Clastic Sedimentary Rock)
Jasper (specifically Fancy Jasper or Bloodstone variety)
Silicon Dioxide (SiO2) with impurities (Iron oxides/silicates)
Quartzite with Chert inclusions
Metamorphosed Quartz-rich Rock (SiO2)
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2)
Sandstone (with potential Arkose/Lithic characteristics)
Arenite (Sedimentary rock composed of sand-sized grains)
Sandstone (with Limonite staining)
Arenite (primarily SiO2 with FeO(OH)·nH2O)
Jasper (specifically Polychrome or Desert Jasper)
Silicon Dioxide (SiO2) with impurities
Sandstone (Ferruginous)
Arenite with Iron Oxide matrix
Jasper with Quartz inclusions
Silicon Dioxide (SiO2) - Microcrystalline Chalcedony
Asphalt Concrete
Bituminous conglomerate
Sandstone
Arenite (SiO2 based)
Sandstone
Arenite (composed primarily of SiO2)
Limonite Concretion (Ironstone)
Limonite / Goethite (FeO(OH)·nH2O)
Bauxite
Bauxite (Al(OH)3, AlO(OH))
Carnelian and White Quartz Bracelet
Silicon Dioxide (SiO2) - specifically Carnelian (Chalcedony) and Rock Crystal/Snow Quartz
Sandstone (Glacial Cobble)
Arenite / Sedimentary Rock (primarily SiO2)
Red Sandstone
Arenite (with Iron Oxide cement)
Green Aventurine (likely)
Silicon dioxide (SiO2) with fuchsitemica inclusions
Sandstone
Arenite (SiO2 based)
Chert
Silicon dioxide (SiO2)
Geode (Unopened)
Siliceous Concretion / Geode
Sandstone (Quartzose Sandstone)
Arenite
Quartz (Milky/Clear)
Silicon Dioxide (SiO2)
Conglomerate
Conglomerate