Sandstone (likely Quartzose)
Arenite (primarily SiO2)
sedimentary
Category
Mineral Within Sedimentary Rock
Browse mineral within sedimentary rock specimens identified by the Rock Identifier community.
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Banded Gneiss Pebble
Gneiss (Metamorphic Rock)
metamorphic
Ferruginous Sandstone
Clastic sedimentary rock (primarily Quartz with Iron Oxide cement)
sedimentary
Sandstone (Ferruginous)
Arenite with Iron-oxide inclusions (SiO2 primarily)
sedimentary
Banded Gneiss
Gneiss (Foliated Metamorphic Rock)
metamorphic
Sandstone Concretion
Septarian Concretion (Nodule)
sedimentary
Quartz Druzy Geode
Silicon Dioxide (SiO2) - Crystalline Variety
mineral
Quartz Geode
Crystalline Quartz (SiO2) within a sedimentary or volcanic host
mineral
Banded Gneiss
Gneiss (SiO2 enriched metamorphic rock)
metamorphic
Quartz in Limonite-rich Matrix
Silicon Dioxide (SiO2) with Goethite/Limonite FeO(OH)·nH2O
Mineral in Sedimentary/Secondary host
Banded Agate
Silicon Dioxide (SiO2) - Chalcedony
mineral
Jasper and Quartz Pebble
Silicon dioxide (SiO2) microcrystalline quartz
sedimentary
Red Sandstone
Arenite (primarily Quartz SiO₂ with Hematite Fe₂O₃ staining)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Quartz Pebble (River Agate / Chalcedony)
Silicon Dioxide (SiO2)
mineral
Sandstone (Quartzose)
Arenite (SiO2 based)
sedimentary
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Chert (Chalcedony/Agate)
Microcrystalline Quartz (SiO2)
sedimentary
Quartz geode
Quartz (SiO₂), likely in a chalcedony or other silica-rich host rind
mineral
Quartz Geode (partially formed)
Silicon Dioxide (SiO2)
mineral
Quartz Druzy Geode Fragment
Silicon Dioxide (SiO2)
mineral
Red Sandstone
Arenite (with Iron Oxide)
sedimentary
Septarian Nodule
Septarian Nodule (Mixture of Calcite, Aragonite, and Limestone/Clay)
sedimentary
Quartz Vein in Matrix (Breccia / Host Rock with Quartz)
Silicon Dioxide (SiO2) in Host Rock Matrix
metamorphic
Sandstone concretion
Arenite sedimentary rock (concretion/nodule)
sedimentary
Quartz-veined Basalt or Limestone Pebble
Quartz vein in host rock (Silicate mineral in carbonate or volcanic matrix)
sedimentary
Sandstone
Arenite (SiO2 based with mineral cement)
sedimentary
Witch Stone (Hag Stone)
Perforated Sedimentary Rock (Typically Sandstone or Limestone)
sedimentary
Ferruginous Sandstone
Arenite with Iron-oxide cement (composed of Quartz and Limonite/Hematite)
sedimentary
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) within Sedimentary or Igneous Matrix
igneous
Granite Gneiss
Gneiss (containing quartz, alkali feldspar, plagioclase, biotite/amphibole)
metamorphic
Chert (Common Opal or Flint variant)
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone
Arenite (often composed of Quartz, SiO2)
sedimentary
Chert Nodule
Microcrystalline Quartz (SiO2)
sedimentary
Fossiliferous Sandstone / Fossil Fragment
Fossiliferous Sedimentary Matrix with Indeterminate Fossil Material
fossil
Limestone Concretion (Botryoidal/Calcareous Nodules)
Calcium Carbonate Concretion (CaCO3)
sedimentary
Vuggy Quartz on Matrix
Silicon Dioxide (SiO2)
mineral
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Limonite Concretion
Limonite (Hydrated iron oxide) FeO(OH)·nH2O
sedimentary
Sandstone (Feldspathic / Arkose)
Sandstone (SiO2 with variable mineral grains)
sedimentary
Red jasper (likely polished/tumbled)
Jasper, microcrystalline quartz (SiO₂) colored by iron oxides
mineral
Fossiliferous Limestone containing a Brachiopod or Mollusk Impression
Biogenic Sedimentary Rock / Fossiliferous Limestone
sedimentary