Red Sandstone
Clastic sedimentary rock (primarily Quartz and Feldspar with Iron Oxide cement)
sedimentary
Category
Mineral On Sedimentary
Browse mineral on sedimentary specimens identified by the Rock Identifier community.
Clear Quartz (Rock Crystal)
Quartz (Silicon Dioxide, SiO2)
mineral
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite with Iron oxide staining (SiO2 with Fe2O3)
sedimentary
Hag Stone
Calcareous sedimentary rock (often Chert, Flint, or Limestone)
sedimentary
Hematite
Iron(III) oxide (Fe2O3)
mineral
Chert (Green variety)
Microcrystalline or cryptocrystalline Quartz (SiO2)
sedimentary
Ferruginous Sandstone
Clastic sedimentary rock (SiO2 with Fe2O3/FeO(OH) cement)
sedimentary
Fossiliferous Rock (likely Dinosaur Fossil in Matrix)
Permineralized Vertebrate Fossil (Calcium Carbonate/Silica replaced bone material)
sedimentary
Ammonite Fossil
Ammonoidea (Calcium carbonate or Pyrite replaced)
sedimentary
Gneiss
Gneissic Metamorphic Rock (Mineral composition: Quartz, Feldspar, Amphibole/Biotite)
metamorphic
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Marble
Metamorphosed Limestone (CaCO3)
metamorphic
Petrified Wood (Silicified Wood)
Silicified fossil wood (SiO2)
metamorphic
Dendritic Limestone
Calcite with Manganese Oxide (Manganese Dendrites)
sedimentary
Green Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Yellow Jasper
Jasper (Silicon Dioxide, SiO2 plus various mineral impurities)
sedimentary
Quartz Druzy on Geode Fragment
Silicon Dioxide (SiO2)
mineral
Mica Schist
Mica Schist (Composition: Muscovite, Biotite, Quartz, Feldspar)
metamorphic
Quartz (Raw Chunk)
Silicon Dioxide (SiO2)
mineral
Quartz Vein in Host Rock (Breccia/Rhyolite)
Silicon Dioxide (SiO2) with matrix
Mineral in Igneous/Sedimentary host
Schist (Kyanite Schist)
Kyanite-Mica Schist (primarily Al2SiO5, KAl2(AlSi3O10)(OH)2, and SiO2)
metamorphic
Siltstone with Quartz Vein
Siltstone (primarily SiO2, Al2O3, Fe2O3)
sedimentary
Quartz (Druzy on Matrix)
Silicon Dioxide (SiO2)
mineral
Gneiss (with Quartzite layers)
Gneissic Metamorphic Rock
metamorphic
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Septarian Nodule
Septarian Concretion (CaCO3 with Siderite and Calcite/Aragonite infusions)
sedimentary
Sandstone
Arenite (SiO2 with various cementing agents)
sedimentary
Quartz (in a rock matrix)
Quartz (SiO2)
mineral
Septarian Nodule
Septarian Concretion (Composition: Calcite, Aragonite, and Limestone/Clay)
sedimentary
Glauconitic Sandstone
Glauconitic Quartz-Wacke / Sandstone (Fe(II),Fe(III),Al,Mg)2-3(Si,Al)4O10(OH)2
sedimentary
Shale or Argillite
Shale (fine-grained clastic sedimentary rock) or Argillite (low-grade metamorphic rock derived from shale)
Sedimentary or Metamorphic (low grade)
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Biotite Schist
Biotite Schist
metamorphic
Jasper
Jasper (Silica-rich Microcrystalline Quartz, SiO2)
sedimentary
Chert (specifically Agate/Jasper variety)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Ironstone Concretion (Siderite Nodules)
Siderite (FeCO3) in Mudstone or Sandstone matrix
sedimentary
Banded Flint (Polished Stripe Flint)
Silicon Dioxide (SiO2) - variety of Chert
sedimentary
Red Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with goethite or iron oxide inclusions
sedimentary