Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Category
Sedimentary Or Igneous Fragment
Browse sedimentary or igneous fragment specimens identified by the Rock Identifier community.
Learn about Sedimentary Or Igneous Fragment in the encyclopedia
View all →
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Sandstone (with Iron Staining)
Arenite (primarily SiO2 with Fe2O3/FeO(OH) oxides)
sedimentary
Sandstone (Ferruginous)
Arenite (variable SiO2 with Fe2O3 staining)
sedimentary
Fossiliferous Limestone (Coquina)
Biogenic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Coquina
Biogenic Limestone (Calcite, CaCO3)
sedimentary
Sandstone (with Iron Staining)
Clastic sedimentary rock (SiO2 with Fe2O3 impurities)
sedimentary
Sandstone (Ferruginous)
Sandstone (mainly SiO2 with Fe2O3 staining)
sedimentary
Sandstone (likely Graywacke or Lithic Arenite)
Clastic sedimentary rock predominantly composed of silicate grains
sedimentary
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone (specifically Red Sandstone)
Arenite (SiO2 with Iron Oxide)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Hag Stone
Perforated Chert (Microcrystalline Silica, SiO2)
sedimentary
Sandstone (Quartzite Pebble)
Arenite / Metamorphosed Sandstone (SiO2)
sedimentary
Greywhacke (River Pebble)
Graywacke (immature sandstone)
sedimentary
Sandstone (likely Quartzite-rich)
Arenite (primarily SiO2)
sedimentary
Sandstone (Red)
Arenite (primarily SiO2 with Iron Oxide staining)
sedimentary
Sandstone (likely Greywacke or Lithic Sandstone)
Arenite / Wacke
sedimentary
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily SiO2 with FeO(OH) impurities)
sedimentary
Sandstone
Arenite (Secondary classification based on grain size)
sedimentary
Sandstone (likely Fossiliferous)
Arenite / Fossiliferous Sandstone (SiO2 composition)
sedimentary
Sandstone (with Quartz veining)
Arenite (primarily SiO2)
sedimentary
Sandstone (with potential trace fossils)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone (likely Quartzose Sandstone)
Arenite
sedimentary
Sandstone (Ferruginous)
Arenite (SiO2 with Fe2O3 inclusions)
sedimentary
Coquina
Biogenic Limestone (Calcite / CaCO3)
sedimentary
Ferruginous Sandstone
Arenite with Iron-Oxide cement (primarily Fe2O3 • nH2O)
sedimentary
Sandstone with Liesegang Rings
Arenite with Iron Oxide Concretions
sedimentary
Red Sandstone
Ferruginous Sandstone (SiO2 with Fe2O3)
sedimentary
Sandstone
Arenite (clastic sedimentary rock)
sedimentary
Sandstone
Arenite (clastic sedimentary rock)
sedimentary
Conglomerate
Sedimentary Conglomerate
sedimentary
Peridotite Nodules in Basalt (Olivine Xenolith)
Mantle Peridotite / Olivine ((Mg, Fe)2SiO4) in Basalt
igneous
Crinoid Fossil in Limestone
Crinoid columnal (Class Crinoidea) in biomicrite
fossil
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Chert (Green variety)
Silicon Dioxide (SiO2)
sedimentary
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Concretion or Geode (unbroken)
Varied (depending on mineral composition and cementing agent). For quartz-lined geodes, the scientific name of the dominant mineral would be Quartz (SiO2). For calcite-lined geodes, Calcite (CaCO3). Concretions are often composed of cryptocrystalline quartz (chert), calcite, or iron oxides.
Sedimentary rock (specifically a concretion or possibly a geode)
Sandstone
Sedimentary Rock (Quartz arenite/Arkose)
sedimentary
Sandstone
Arenite (primarily Quartz-rich sedimentary rock)
sedimentary
Dalmatian Jasper
Dalmatian Stone (Aplite with Arfvedsonite)
igneous
Dalmatian Stone
Aplite (often incorrectly called Dalmatian Jasper)
igneous