Red Sandstone
Clastic Sedimentary Rock
sedimentary
Category
Sedimentary Rock (Specifically A Clastic Sedimentary Rock Formed Into A Cobble)
Browse sedimentary rock (specifically a clastic sedimentary rock formed into a cobble) specimens identified by the Rock Identifier community.
Learn about Sedimentary Rock (Specifically A Clastic Sedimentary Rock Formed Into A Cobble) in the encyclopedia
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Sandstone
Clastic Sedimentary Rock
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Polygenetic Conglomerate (or Breccia)
Clastic Sedimentary Rock
sedimentary
Conglomeratic Sandstone
Clastic Sedimentary Rock
sedimentary
Pebble (likely Siltstone or fine-grained Sandstone)
Sedimentary Clastic Rock
sedimentary
Sandstone (specifically Arkose or Quartz Arenite)
Arenite (primarily SiO2 with possible Feldspar)
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Conglomerate (or Breccia)
Clastic Sedimentary Rock
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
River Pebble (Siltstone/Mudstone)
Clastic sedimentary rock
sedimentary
Sandstone (likely Graywacke or Lithic Sandstone)
Clastic Sedimentary Rock
sedimentary
Leopard Skin Jasper
Orbicular Jasper (Silicon Dioxide, SiO2)
sedimentary
Chert (Agatized/Chalcedony variety)
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Chert (specifically tan/pink variety)
Silicon Dioxide (SiO2)
sedimentary
Sandstone
Arenite (predominantly SiO2)
sedimentary
Conglomerate
Polymictic Conglomerate
sedimentary
Rounded sandstone pebble
Clastic sandstone, chiefly quartz and feldspar grains cemented by iron oxides and silica
sedimentary
Sandstone (Water-worn Cobble)
Arenite (SiO2 with CaCO3 or Fe2O3 cement)
sedimentary
Sandstone (Stream-rounded Cobble)
Arenite (composed primarily of SiO2, Silica)
sedimentary
Green Chert (Jasper)
Silicon Dioxide (SiO2)
sedimentary
Conglomerate
Conglomerate (Rock composed predominantly of rounded clasts > 2mm)
sedimentary
Shale
Shale (Fine-grained clastic sedimentary rock)
sedimentary
Shale
Fissile Mudstone (primarily composed of phyllosilicate minerals like kaolinite, montmorillonite, and illite)
sedimentary
Sandstone
Arenite
Sedimentary
Granite Cobble
Phaneritic Felsic Igneous Rock
igneous
Shale
Fissile mudstone (Shale)
sedimentary
Sandstone (Pebble/Cobble)
Sandstone (arenite is a more precise term for sandstone with less than 15% matrix; this specimen appears to be a lithic or quartz arenite)
Sedimentary
Sandstone (specifically Red Sandstone)
Arenite (SiO2 with Iron Oxide)
sedimentary
Sandstone with Quartz Sphere
Arenite (SiO2-rich sedimentary rock) with Quartzite/Rose Quartz sphere
sedimentary
Sandstone
Arenite (SiO2 dominant)
sedimentary
Quartzite Sandstone / Quartz Sandstone
Quartz Sandstone (SiO2 with minor mineral impurities)
sedimentary
Purple Conglomerate
Polymictic Conglomerate
sedimentary
Metaconglomerate
Metaconglomerate (Quartzite conglomerate)
metamorphic
Ferruginous Sandstone
Arenite with Iron Oxide cement (primarily Fe2O3)
sedimentary
Sandstone with Liesegang Rings
Arenite with secondary Iron oxide (Limonite/Goethite) precipitation
sedimentary
Shale
Fissile mudrock (composed of clay-sized particles and detrital grains)
sedimentary
Hag Stone
Perforated Sedimentary Rock (Typically Limestone or Sandstone)
sedimentary
Gneiss (specifically a granitic gneiss cobble)
Gneiss (high-grade regional metamorphic rock)
metamorphic