Carnelian (Agate)
SiO2 (Silicon Dioxide with Iron Oxide inclusions)
mineral
Category
Mineral Within A Sedimentary Rock
Browse mineral within a sedimentary rock specimens identified by the Rock Identifier community.
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Quartz Geode
Crystalline Silicon Dioxide (SiO2) within a geode structure
mineral
Sandstone (with vugs)
Arenite / Sedimentary Sandstone
sedimentary
Banded Agate (Tumbled)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
mineral
Sandstone
Arenite (Clastic Sedimentary Rock)
sedimentary
Hag Stone
Perforated sedimentary rock (typically sandstone or limestone)
sedimentary
Sandstone
Arenite (Siliclastic sedimentary rock)
sedimentary
Conglomerate
Clastic sedimentary rock (composed mostly of SiO2)
sedimentary
Bituminous Coal (with Anthracite or Vitrinite inclusion)
Organic-rich Sedimentary Rock (Carboniferous classification)
sedimentary
Sandstone (with Quartz veining)
Arenite (primarily SiO2)
sedimentary
Sandstone Concretion
Sedimentary Clastic Rock (Silicate-rich)
sedimentary
Vein-filled Sedimentary Rock
Silicified sedimentary rock with quartz/calcite vein
sedimentary
Sandstone (likely Siltstone or Mudstone)
Clastic sedimentary rock (primarily SiO2 with various oxides)
sedimentary
Brown Marble
Metamorphic Limestone (CaCO3)
metamorphic
Sandstone with Quartz Crystal Infill
Quartz-cemented quartz arenite
sedimentary
Red Jasper (Polished)
Silicon Dioxide (SiO2) with Hematite inclusions
sedimentary
Geode or Concretion
Silica-based Concretion / Quartz Geode
sedimentary
Sandstone Concretion
Clastic sedimentary rock (primarily Quartz SiO2 with mineral cement)
sedimentary
Sandstone (River Cobble)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone (Quartz Arenite)
Sandstone (SiO2 with possible mineral cements)
sedimentary
Gneiss
Foliated Metamorphic Rock
metamorphic
Quartz-Veined Mudstone
Argillaceous Mudstone with Quartz Veining
sedimentary
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Fossiliferous Sandstone
Sedimentary rock containing invertebrate fossils
fossil
Puddingstone
Conglomerate (Jasper Conglomerate)
sedimentary
Chalcedony in Limestone Host Rock
Silicon Dioxide (SiO2) within Calcium Carbonate (CaCO3)
Mineral within Sedimentary Rock
Calcite on Limestone (or Fossil)
Calcium Carbonate (CaCO3)
sedimentary
Jasper in Calcite / Brecciated Jasper
Silicon dioxide with calcium carbonate (SiO2 with CaCO3)
sedimentary
Siltstone Concretion
Carbonate-cemented Siltstone Concretion
sedimentary
Concretion
Sedimentary Concretion (Ironstone / Calcite Concretion)
sedimentary
Amethyst (Geode/Druzy)
Silicon Dioxide (SiO2) with iron impurities
mineral
Concretion (Sandstone)
Sandstone Concretion
sedimentary
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
sedimentary
Druzy Quartz on Limestone
Silicon Dioxide (SiO2)
mineral
Agate (Polished Slice)
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (SiO2 with various cementing agents)
sedimentary
Druzy Quartz Geode (Oco or Moroccan variety)
Silicon Dioxide (SiO2)
mineral
Quartz-veined Basalt or Limestone Pebble
Quartz vein in host rock (Silicate mineral in carbonate or volcanic matrix)
sedimentary
Quartz Geode
Crystalline Silicon Dioxide (SiO2)
mineral
Sandstone (likely Graywacke or Arkose)
Arenite
sedimentary
Sandstone (Ferruginous)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)
sedimentary