Sandstone (Banded)
Arenite
Category
Browse mineral or sedimentary rock (with mineral inclusions) specimens identified by the Rock Identifier community.
Sandstone (Banded)
Arenite
Gneiss
High-grade Metamorphic Gneiss
Herkimer Diamond
Quartz (Silica - SiO2)
Red Jasper
Jasper (Silicate mineral - SiO2)
Banded Gneiss
Gneiss (Metamorphic Rock)
Tumbled Agate
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Sandstone (likely Arkosic or Quartzose)
Arenite (SiO2 based with mineral inclusions)
Dalmatian Jasper
Peralkaline rhyolite with arfvedsonite inclusions
Xenolith in Basalt
Mafic Igneous Rock with Felsic Inclusion
Dalmation Stone (Dalmation Jasper)
Peralkaline rock (primarily Feldspar and Quartz with Arfvedsonite spots)
Basalt with Amygdule
Aphanitic Mafic Volcanic Rock (Basalt) with Zeolite/Quartz Infill
Green Chert (Jasper / Flint)
Silicon Dioxide (SiO2)
Sandstone with Magnetite and Iron Staining
Clastic Sedimentary Rock (contains Fe3O4 and Limonite/Hematite)
Chert (and Fossiliferous Chert)
Silicon Dioxide (SiO2)
K-Feldspar (Potassium Feldspar)
Orthoclase / Microcline (KAlSi3O8)
Red Jasper (or Agate/Jasper mixture)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Sandstone (with carbonaceous plant fragments)
Arenite (composed primarily of SiO2)
River cobble (Greywacke/Sandstone)
Sandstone / Greywacke
Ruby in Kyanite
Al2O3 (Corundum) in Al2SiO5 (Kyanite-Fuchsite-Quartz)
Breciated Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite (SiO2 principal)
Caribbean Calcite
Calcium Carbonate with Argonite (CaCO3)
Riverstone (Sandstone or Quartzite)
Sedimentary Rock (likely Arenite)
Sandstone (Arkose/Quartzose)
Arenite (SiO2 based clastic rock)
Polished red jasper
Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides
Sandstone (River Cobble / Pebble)
Sedimentary Rock (Quartz Sandstone / Arenite)
Sandstone
Arenite (primarily SiO2 with various cementing agents)
Sandstone
Sandstone (Arenite)
Conglomerate (or Breccia / Porphyry)
Clastic Sedimentary Rock (Conglomerate / Sandstone)
Sandstone
Arenite (SiO2 primarily)
River Rock (Mossy)
Stream-rounded Clast (likely Siltstone or Sandstone with bryophytes)
Jasper and Quartz Pebble
Silicon dioxide (SiO2) microcrystalline quartz
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic Extrusive volcanic rock)
Gneiss (foliated metamorphic rock)
Gneiss
Sandstone
Arenite (SiO2 based)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Gneiss
Foliated Metamorphic Rock (Gneiss)
Sandstone
Arenite
Sandstone
Arenite (SiO2 based)
Red Sandstone
Ferruginous Sandstone (SiO2 with Fe2O3)