Quartz Geode
Silicon Dioxide (SiO2)
mineral
Category
Mineral Within Sedimentary Rock
Browse mineral within sedimentary rock specimens identified by the Rock Identifier community.
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Fossiliferous Sandstone
Sedimentary rock containing invertebrate fossils
fossil
Quartz Geode
Silicon Dioxide (SiO2) - Crystalline Quartz
mineral
Sandstone (Ferruginous)
Arenite with Iron Oxide (Limonite/Hematite) coating
sedimentary
Quartz-lined Geode / Chalcedony Nodule
Silicon Dioxide (SiO2)
sedimentary
Geode
Crystalline Quartz in Sedimentary Matrix (SiO2)
sedimentary
Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Weathered Sandstone with Algae Growth
Arenite
sedimentary
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Sandstone (with Iron Staining)
Arenite (Siliclastic sedimentary rock)
sedimentary
Sandstone (Ferruginous)
Arenite with Iron Oxide matrix
sedimentary
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Geode
Quartz / Chalcedony nodule with mineralized cavity
sedimentary
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Carnelian (Chalcedony)
Silicon Dioxide (SiO2)
mineral
Sandstone (Ferruginous)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)
sedimentary
Chalcedony / Agate Pebble
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Dalmatian Stone (often misnamed Dalmatian Jasper)
Aplite (with hornblende/arfvedsonite inclusions)
igneous
Sandstone (Quartzose)
Arenite (SiO2)
sedimentary
Banded Sandstone
Arenite with Liesegang banding (primarily SiO2 with FeO(OH) impurities)
sedimentary
Gneiss
Foliated Metamorphic Rock
metamorphic
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Iron Concretion
Ferruginous concretion (Fe2O3·nH2O / FeO(OH))
sedimentary
Ironstone pebble
Ironstone (Ferruginous Sedimentary Rock)
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone Concretion
Sedimentary Clastic Rock (Silicate-rich)
sedimentary
Agate / Chalcedony Pebble
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Sandstone (Ferruginous)
Arenite (SiO2 with iron oxide impurities)
sedimentary
Carnelian
SiO2 (Silicon Dioxide - Chalcedony variant)
mineral
Drupa or Druzy Quartz on Geode Fragment
Crystalline Silicon Dioxide (SiO2)
mineral
Banded Sandstone
Clastic Sedimentary Rock (Quartz Arenite)
sedimentary
Quartz Geode
Crystalline Silicon Dioxide (SiO2) within a geode structure
mineral
River Rock / Stream Pebble
Fluvial Clast / Rounded Sedimentary Particle
Sedimentary Rock (possibly composed of various minerals)
Carnelian (Agate)
SiO2 (Silicon Dioxide with Iron Oxide inclusions)
mineral
Septarian Nodule (Dragon Stone)
Septarian Concretion (CaCO3 with Calcite, Aragonite, and Limestone/Bentonite)
sedimentary
Sandstone (with vugs)
Arenite / Sedimentary Sandstone
sedimentary
Druzy Quartz on Sandstone
Silicon Dioxide (SiO2) with Quartz Crystals on Clastic Sedimentary Rock
sedimentary
Agate in Matrix
Silicon Dioxide (SiO2) within host rock
mineral
Halite (Rock Salt)
Halite (Sodium Chloride, NaCl)
mineral