Conglomerate
Conglomerate (a clastic sedimentary rock)
Category
Browse mineral within sedimentary rock specimens identified by the Rock Identifier community.
Conglomerate
Conglomerate (a clastic sedimentary rock)
Carnelian (Chalcedony)
Silicon Dioxide (SiO2)
Sandstone Concretion
Sandstone (Sedimentary Rock) with silica or calcite cement
Sandstone
Clastic sedimentary rock (primarily SiO2)
Weathered Sandstone with Algae Growth
Arenite
Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Dalmatian Stone (often misnamed Dalmatian Jasper)
Aplite (with hornblende/arfvedsonite inclusions)
Sandstone
Arenite (SiO2 based)
Sandstone with Magnetite and Iron Staining
Clastic Sedimentary Rock (contains Fe3O4 and Limonite/Hematite)
Ferruginous Sandstone
Clastic sedimentary rock (primarily Quartz with Iron Oxide cement)
Sandstone (Quartz Arenite)
Sandstone (SiO2 with possible mineral cements)
Shale (with Iron Oxide staining)
Fissile Mudstone (primarily Quartz and Clay minerals)
Chert (Agatized/Chalcedony variety)
Microcrystalline Quartz (SiO2)
Chert (Jasper variation)
Silicon dioxide (SiO2)
Red Jasper (Polished)
Silicon Dioxide (SiO2) with Hematite inclusions
Druzy Quartz on Host Rock
Silicon Dioxide (SiO2)
Concretion (Sandstone)
Sandstone Concretion
Druzy Quartz on Limestone
Silicon Dioxide (SiO2)
Amethyst (Geode/Druzy)
Silicon Dioxide (SiO2) with iron impurities
Druzy Quartz Geode (Oco or Moroccan variety)
Silicon Dioxide (SiO2)
Ferruginous Sandstone
Arenite with Iron-oxide cement (composed of Quartz and Limonite/Hematite)
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
Calcite on Limestone (or Fossil)
Calcium Carbonate (CaCO3)
Quartz Druzy Geode
Silicon Dioxide (SiO2) - Crystalline Variety
Sandstone
Clastic Sedimentary Rock (primarily Quartz, SiO2)
Septarian Nodule
Septarian Nodule (Mixture of Calcite, Aragonite, and Limestone/Clay)
Quartz Geode (partially formed)
Silicon Dioxide (SiO2)
Chert (Chalcedony/Agate variety)
Silicon Dioxide (SiO2)
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (primarily SiO2)
Sandstone (Ferruginous)
Arenite with Iron-oxide inclusions (SiO2 primarily)
Sandstone
Arenite (often composed of Quartz, SiO2)
Sandstone
Arenite (SiO2 with various cementing agents)
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
Quartz Vein in River Siltstone
Crystalline Quartz (SiO2) in Siliclastic Matrix
Halite (Rock Salt)
Halite (Sodium Chloride, NaCl)
River Quartzite Siltstone
Quartz-rich Meta-siltstone (SiO2 dominated)
Dalmatian Jasper
Peralkaline rhyolite
Red Sandstone
Arenite (primarily Quartz SiO₂ with Hematite Fe₂O₃ staining)
Chalcedony (Botryoidal Agate vein)
Chalcedony (Microcrystalline Quartz) - SiO2
Turquoise in Matrix
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
Quartz Geode
Silicon Dioxide (SiO2) within a secondary sedimentary structure
Sandstone Concretion
Ferruginous Sandstone Concretion