Sedimentary Rock (Possibly A Conglomerate Or Coarse Grained Sandstone)

Pink granite

Granite; predominantly quartz, K-feldspar, plagioclase, and biotite/hornblende

Iron-rich weathered rock, possibly goethite/limonite-bearing sandstone or ironstone

Limonite (hydrated iron oxides; chiefly goethite, FeO(OH), with hematite, Fe₂O₃)

Sandstone

Arenite (SiO2 based)

Sandstone

Quartzose Sandstone (Sedimentary Rock)

Sandstone

Arenite (SiO2 based typically)

Sandstone

Arenite (primarily Quartz-rich)

Sandstone

Sandstone (Siliciclastic Sedimentary Rock)

Sandstone

Arenite

Sandstone

Arenite (composed primarily of SiO2)

Sandstone

Arenite (SiO2 based)

Sandstone

Sedimentary Rock (Quartzose Sandstone)

Sandstone

Arenite (primarily SiO2)

Sandstone (Greywacke/Lithic Sandstone)

Clastic Sedimentary Rock (Lithic Sandstone)

Iron-rich basaltic pebble

Basalt, likely weathered and possibly ferruginous

Sandstone

Arenite (SiO2 based)

Sandstone

Arenite (primarily SiO2)

Sandstone

Arenite

Dark flint or chert fragment

Microcrystalline quartz (SiO₂), commonly called flint when dark and nodular

Sandstone Pebble

Sandstone (Silicon dioxide-rich clastic sedimentary rock)

Sandstone

Sedimentary rock composed mainly of quartz sand

Sandstone (Red Sandstone)

Arenite (SiO2 based with Fe2O3 staining)

Sandstone (Quartzose Sandstone)

Arenite (SiO2 principal component)

Sandstone

Sedimentary Rock (Quartz Sandstone)

Sandstone (with potential Arkose/Lithic characteristics)

Arenite (Sedimentary rock composed of sand-sized grains)

Sandstone

Arenite (primarily SiO2)

Sandstone with Quartz Sphere

Arenite (SiO2-rich sedimentary rock) with Quartzite/Rose Quartz sphere

Tumbled granitic rock, possibly granite pegmatite

Granite or granitic pegmatite; chiefly quartz, feldspar, and mica, with possible iron-oxide staining

Sandstone

Sedimentary Rock (Quartz Sandstone)

Sandstone (Quartzose)

Arenite (primarily SiO2)

Sandstone

Sandstone (clastic sedimentary rock, predominantly SiO2)

Sandstone

Sandstone (principally SiO2/Silicon Dioxide)

Sandstone

Arenite

Sandstone

Arenite (SiO2 based)

Rounded sandstone pebble

Quartz-rich sandstone, likely arkosic or feldspathic sandstone

Sandstone Pebble

Quartzose Sandstone (Sedimentary Rock)

Sandstone

Arenite (Clastic Sedimentary Rock)

Siltstone

Siltstone (primarily SiO2 with Fe2O3)

Asphalt (Road Aggregate)

Bituminous conglomerate

Sandstone

Arenite (primarily SiO2)

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2)

Sandstone (Ferruginous)

Arenite with Iron Oxide matrix

Sandstone

Arenite