Chert (Jasper variation)
Silicon dioxide (SiO2)
Category
Browse mineral within sedimentary rock specimens identified by the Rock Identifier community.
Chert (Jasper variation)
Silicon dioxide (SiO2)
Dalmatian Stone
Dalmatian Jasper (Aplitic Rock)
Quartz geode half
Quartz (SiO₂), likely a druzy quartz-lined geode
Dyed Agate Geode
Silicon Dioxide (SiO2) - Chalcedony variety
Conglomerate
Clastic Sedimentary Rock (Conglomerate)
Chalcedony (Agate/Carnelian)
Silicon Dioxide (SiO2)
Gneiss
Gneiss (Metamorphic Rock)
Quartz-Veined Mudstone
Argillaceous Mudstone with Quartz Veining
Chert (Agatized/Chalcedony variety)
Microcrystalline Quartz (SiO2)
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (primarily SiO2)
Quartz Vein in Siltstone
Siltstone with Quartz (SiO2) inclusion
Quartz Geode (Amethyst / Clear Quartz)
Silicon Dioxide (SiO2)
Sandstone Concretion
Ferruginous Sandstone Concretion
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
Jasper and Chalcedony Nodule
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Gneiss
Gneiss
Shale (with Iron Oxide staining)
Fissile Mudstone (primarily Quartz and Clay minerals)
Sandstone
Arenite
Sandstone
Arenite (SiO2 with various cementing agents)
Sandstone
Arenite (primary component SiO2)
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (SiO2 dominated)
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
Sandstone (with Iron Staining)
Arenite (Silicon Dioxide, SiO2, often with iron oxides like Limonite)
Sandstone
Clastic Sedimentary Rock (primarily Quartz, SiO2)
Gneiss
Gneiss (foliated metamorphic rock)
Banded gneiss
Gneiss, commonly quartz–feldspar–mica gneiss
Sandstone
Arenite (primarily Quartz-rich)
Jasper
Silicon dioxide (SiO2)
Sandstone (Quartzite-rich)
Clastic sedimentary rock (SiO2 primarily)
Ocean Jasper
Spherulitic Chalcedony (SiO2)
Breccia
Sedimentary Breccia
Sandstone (likely Graywacke or Arkose)
Arenite
Yellow Quartz / Chalcedony
Silicon Dioxide (SiO2)
Gneiss
Metamorphic Gneiss
Turquoise
Hydrated phosphate of copper and aluminum, CuAl6(PO4)4(OH)8·4H2O
White Quartz (Carved Star)
Silicon Dioxide (SiO2)
Druzy Quartz Geode (Oco or Moroccan variety)
Silicon Dioxide (SiO2)
Quartz geode
Microcrystalline quartz (SiO₂), commonly with chalcedony and possible calcite inclusions
Quartz Geode Fragment
Silicon Dioxide (SiO2)
Quartz Geode
Silicon Dioxide (SiO2) within a secondary sedimentary structure
Sandstone
Arenite (primarily SiO2)
Chalcedony (Botryoidal Agate vein)
Chalcedony (Microcrystalline Quartz) - SiO2