Quartz Geode
Crystalline Silicon Dioxide (SiO2) within a geode structure
Category
Browse anthropogenic sedimentary style organic solid specimens identified by the Rock Identifier community.
Quartz Geode
Crystalline Silicon Dioxide (SiO2) within a geode structure
Red Jasper
Silicon Dioxide (SiO2)
Conglomerate
Conglomerate (clastic sedimentary rock type)
Geode or Concretion
Silica-based Concretion / Quartz Geode
Quartz Geode
Silicon Dioxide (SiO2)
Quartz Geode Fragment
Silicon Dioxide (SiO2) in a Sedimentary Host
Chert Arrowhead
Cryptocrystalline microcrystalline Quartz (SiO2)
Quartzite
Quartzite (SiO2)
Banded Chert (Wonderstone-style)
Silicon Dioxide (SiO2)
Quartz Geode Fragment
Silicon Dioxide (SiO2)
Quartz Geode
Silicon Dioxide (SiO2) within a geode
Quartz Geode
Silicon Dioxide (SiO2)
Grey Chalcedony (Tumbled Moon)
Microcrystalline Quartz (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Feldspar-rich Quartzite
Meta-arkose (Quartz-Feldspar Quartzite)
Quartz Geode
Silicon Dioxide (SiO2)
Chert (Mookaite style Jasper)
Microcrystalline Quartz (SiO2) with Hematite/Goethite inclusions
Green Jasper
Silicon Dioxide (SiO2) with iron silicate inclusions
Coquina
Bioclastic Limestone (composed primarily of CaCO3)
Ferruginous Conglomerate (or Iron-Rich Concrete/Slag)
Clastic Sedimentary (Silicon Dioxide/Iron Oxide matrix)
Diamond Drill Core (Greenschist and Quartzite)
Chlorite Schist / Meta-quartzite (Metamorphic Rock Core Sample)
Limonite-stained Chert/Jasper
Microcrystalline Quartz (SiO2) with Iron Oxides (FeO(OH)·nH2O)
Quartz Geode Fragment
Silicon Dioxide (SiO2)
Limonite/Goethite Concretion
Hydrated Iron(III) Oxide-hydroxide (FeO(OH)·nH2O)
Conglomerate
Conglomerate (clastic sedimentary rock)
Quartz Geode (Cracked)
Silicon Dioxide (SiO2)
Smoky Quartz (Herkimer-style)
Silicon Dioxide (SiO2)
Quartz Geode
Silicon Dioxide (SiO2)
River Cobbles (Basalt, Quartzite, and Sandstone mix)
Fluvial detritus (primarily SiO2, Plagioclase, and Pyroxene mix)
Unopened Geode
Geode (containing various mineralization like Quartz SiO2)
Yellow Aventurine (or Citrine-colored Quartz)
Silicon Dioxide (SiO2) with inclusions
Amethyst Geode
Amethyst (Silicon Dioxide), Formula: SiO2
Garnet-bearing Schist
Almandine Garnet (Fe3Al2(SiO4)3) in Mica Schist
Quartz Geode
Silicon Dioxide (SiO2)
Green Opal
Hydrated Silica (SiO2·nH2O)
Quartz Geode Fragment
Silicon Dioxide (SiO2)
Quartz Geode (Cracked Open Fragment)
Silicon Dioxide (SiO2)
Puddingstone
Polymictic Conglomerate
Jasper Conglomerate
Jasper-clast Conglomerate (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Hematite inclusions
Quartz Geode
Silicon Dioxide (SiO2)
Sandstone
Arenite (SiO2 based)