Orbicular Jasper (Ocean Jasper variant)
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Category
Anthropogenic Sedimentary Style Organic Solid
Browse anthropogenic sedimentary style organic solid specimens identified by the Rock Identifier community.
Quartz Geode Fragment
Silicon Dioxide (SiO2) in a Sedimentary Host
mineral
Conglomerate
Conglomerate (clastic sedimentary rock type)
sedimentary
Quartz Geode
Crystalline Silicon Dioxide (SiO2) in a Geodic structure
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Ambergris
Ambra grisea (Metabolic byproduct)
Organic (Geological relative)
Smoky Quartz (Herkimer-style)
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (primarily SiO2)
sedimentary
Grey Chalcedony (Tumbled Moon)
Microcrystalline Quartz (SiO2)
mineral
Conglomerate (Asphaltic/Anthropogenic)
Clastic sedimentary rock / Bituminous mixture
sedimentary
Amethyst Geode
Amethyst (Silicon Dioxide), Formula: SiO2
mineral
Yellow Aventurine (or Citrine-colored Quartz)
Silicon Dioxide (SiO2) with inclusions
metamorphic
Ferruginous Conglomerate (or Iron-Rich Concrete/Slag)
Clastic Sedimentary (Silicon Dioxide/Iron Oxide matrix)
sedimentary
Green Jasper
Silicon Dioxide (SiO2) with iron silicate inclusions
sedimentary
Coquina
Bioclastic Limestone (composed primarily of CaCO3)
sedimentary
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Quartz Geode (Cracked)
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (SiO2 based with various mineral cements)
sedimentary
Quartz Geode
Silicon Dioxide (SiO2)
Mineral/Sedimentary
Puddingstone
Polymictic Conglomerate
sedimentary
Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Green Opal
Hydrated Silica (SiO2·nH2O)
mineraloid
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
mineral
Amethyst Geode
Silicon Dioxide with trace inclusions of Iron (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Fossilized Coral (Petoskey-style)
Hexagonaria percarinata (Fossilized Rugose Coral)
sedimentary
Fancy Jasper (Mookaite style)
Silicon Dioxide (SiO2) with iron oxide impurities
sedimentary
Jasper (Imperial Jasper style)
Silicon Dioxide (SiO2) with impurities
sedimentary
Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Geode Nodules / Chalcedony Geode
Silicon Dioxide (SiO2) - Amorphous to Cryptocrystalline Quartz
sedimentary
Ambergris
Physeter macrocephalus excreta (Ambergris)
mineraloid / organic geological find
Quartz (Engineered Stone Countertop)
Silicon Dioxide (SiO2) with polymer resins
Sedimentary-like (Industrial Composite)
Dendritic Agate
Dendritic Agate (Silicon Dioxide with Manganese or Iron Oxide inclusions, SiO2)
mineral
Gastropod Fossil (Snail Internal Mold)
Gastropoda; internal mold (steinkern), often composed of Calcium Carbonate (CaCO3) or Silica (SiO2)
sedimentary
Petrified Wood (Jet or Coalified Wood appearance)
Silicified wood (principally SiO2) or Carbonized Wood
sedimentary
Quartz Geode (Druzy)
Crystalline Silicon Dioxide (SiO2)
mineral
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions
sedimentary
Quartz Geode Fragment
Silicon Dioxide (SiO2)
sedimentary
Painted River Pebble (likely Basalt or Greywacke)
Aphanitic Lithic Clast with Anthropogenic Pigment coating
Sedimentary or Igneous
White Opal
Hydrated Amorphous Silica (SiO2·nH2O)
Mineraloid
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
sedimentary
River Stone (likely Siltstone or fine-grained Basalt)
Clastic Sedimentary (Siltstone) or Mafic Igneous (Basalt)
sedimentary or igneous