Sandstone (Quartzite-rich Pebble)
Arenite (primarily SiO2)
sedimentary
Category
Sedimentary Rock (Possibly A Conglomerate Or Coarse Grained Sandstone)
Browse sedimentary rock (possibly a conglomerate or coarse grained sandstone) specimens identified by the Rock Identifier community.
Gneiss
Foliated Metamorphic Rock (Gneiss)
metamorphic
Gneiss
High-grade regional metamorphic rock (Foliated)
metamorphic
Quartzite
Quartzite (primarily SiO₂)
metamorphic
Sandstone (Ferruginous)
Arenite (with high iron oxide content)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Sandstone (Quartz-rich)
Arenite (composed primarily of SiO2)
sedimentary
Granodiorite
Granodiorite
igneous
Sandstone
Arenite (general term for sandstone)
Sedimentary Rock
Sandstone
Arenite (SiO2 primarily)
sedimentary
Quartzite
Quartzite
Metamorphic rock
Granitic Gneiss
Gneiss (high-grade metamorphic rock primarily of quartz, feldspar, and mica)
metamorphic
Sandstone (Quartzite-rich Cobble)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Red Sandstone
Arenite (Fe2O3 rich)
sedimentary
Sandstone (Ferruginous)
Arenite (Fe2O3 enriched)
sedimentary
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone (Ferruginous)
Sandstone (SiO2 with iron oxide inclusions)
sedimentary
Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone (Quartzose Sandstone)
Arenite (composed primarily of SiO2)
sedimentary
Gneiss (specifically a Banded Gneiss cobble)
Gneiss (composed mainly of Quartz, Feldspar, and Biotite/Amphibole)
metamorphic
Sandstone (Quartzite-rich)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Sandstone (River Cobble)
Clastic Sedimentary Rock (primarily Quartz with Feldspar)
sedimentary
Sandstone (Water-worn Pebble)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone (Wonderstone)
Silicified Sandstone / Orthoquartzite with Liesegang rings
sedimentary
Riverstone (Quartzite or Siltstone cobble)
Quartzite (primarily SiO2)
metamorphic
Granitic Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Dark Igneous Rock (Likely Basalt or Diabase)
Basalt (extrusive igneous rock) or Diabase (intrusive igneous rock - also known as Dolerite), largely composed of plagioclase feldspar, pyroxene (augite), and sometimes olivine and amphibole. Exact mineralogy would require thin section analysis.
Igneous
Sandstone (Ferruginous)
Arenite with Iron Oxides
sedimentary
Gneiss (Metamorphic Rock)
Gneiss (variable mineral formula primarily containing Quartz, Feldspar, and Mica)
metamorphic
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Sandstone (with Iron Staining)
Clastic sedimentary rock (SiO2 with Fe2O3 impurities)
sedimentary
Gneiss (Metamorphic Cobble)
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Gneiss
Gneiss
metamorphic
Sandstone (Quartz-rich)
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite
sedimentary
River Rock / Stream Pebble
Fluvial Clast / Rounded Sedimentary Particle
Sedimentary Rock (possibly composed of various minerals)
Sandstone (Weathered)
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite
sedimentary