Red Sandstone Pebble
Quartzose Sandstone
Category
Browse sedimentary rock (specifically a clastic sedimentary rock formed into a cobble) specimens identified by the Rock Identifier community.
Red Sandstone Pebble
Quartzose Sandstone
Conglomerate
Polymictic clast-supported conglomerate
Druzy Quartz on Sandstone
Silicon Dioxide (SiO2) with Quartz Crystals on Clastic Sedimentary Rock
Sandstone
Sedimentary Rock (Quartz arenite)
Sandstone (Quartzose Sandstone)
Arenite (primarily SiO2)
Sandstone
Arenite
Chert Nodules in Sedimentary Rock
Microcrystalline Quartz (SiO2) within Clastic Matrix
Chert (Jasper/River Rock)
Microcrystalline Quartz (SiO2)
Sandstone (lithic)
Lithic Wacke / Arenite
Sandstone (likely Arkosic)
Arenite (SiO2 with KAlSi3O8)
Sandstone (Lithic Sandstone / Greywacke)
Sandstone (SiO2 rich clastic sedimentary rock)
Sandstone Pebble
Arenite (primarily SiO2)
Sandstone (Tumbled/River Pebble)
Arenite (composed primarily of SiO2)
Sandstone
Arenite
Sandstone
Arenite
Sandstone
Sedimentary Rock (Quartz arenite/Arkose)
Nutting Stone / Cupstone (Sandstone or Quartzite)
Sedimentary rock with anthropogenic modification (cupule)
Sandstone (likely Conglomerate or Gritstone)
Arenite (SiO2 based)
Stromatolite
Biogenic Sedimentary Rock (composed predominantly of CaCO3)
Conglomerate with Quartz Inclusions
Conglomerate (clastic sedimentary rock) with internal Quartz (SiO2)
Sandstone
Clastic Sedimentary Rock (primarily Quartz, SiO2)
Sandstone
Arenite (SiO2 based)
Banded River Cobble with Mafic Dike
Hydrothermally altered Graywacke or Sandstone with Mafic Intrusion
Sandstone
Arenite (with iron oxide cement)
Painted River Rock
Polished fluvial clast with acrylic/synthetic pigment coating
Sandstone (Quartzite-rich)
Clastic Sedimentary Rock (primarily SiO2)
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite (SiO2 based)
Sandstone
Sedimentary Rock (Quartz arenite)
Quartz-rich breccia or conglomerate
Siliciclastic conglomerate/breccia, predominantly quartz and feldspar clasts in a rusty iron-oxide cement
Sandstone Pebble
Sedimentary Rock (Quartzose Sandstone)
Sandstone
Sedimentary Rock (Quartz Sandstone)
Sandstone (Banded)
Clastic sedimentary rock (primarily SiO2)
Sandstone / Chert Gravel
SiO2 (Silicon Dioxide based clastic sedimentary rock)
Sandstone Pebble
Arenite (SiO2 with minor mineral cements)
Sandstone
Sedimentary Rock (Quartz Sandstone)
Conglomerate
Conglomeratic Sandstone
Sandstone
Arenite (primarily SiO2)
River Rock
Fluvial Cobble (typically Quartzite or Sandstone)
Sandstone (Water-worn Pebble)
Clastic Sedimentary Rock (primarily Quartz and Feldspar)
Sandstone
Sedimentary Rock (Quartz arenite)
Jasper Conglomerate
Clastic Sedimentary Rock (Conglomeratic Quartzite)