Sandstone
Clastic sedimentary rock (primarily SiO2)
Category
Browse mineral side rock specimens identified by the Rock Identifier community.
Sandstone
Clastic sedimentary rock (primarily SiO2)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 cement)
Sandstone
Arenite (primarily SiO2)
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (primarily SiO2)
Sandstone (with potential iron-oxide weathering)
Arenite (SiO2 based)
Sandstone
Arenite (SiO2 based)
Green Quartz (Prasiolite/Adventurine)
Silicon Dioxide with inclusions (SiO2)
Sandstone
Arenite (composed mainly of SiO2)
Sandstone
Sandstone (Sedimentary rock composed of silicate grains)
Metallic Ornament / Jewelry
N/A - This is an artificial object, not a geological specimen.
Granitic Pegmatite Intrusion in Host Rock
Pegmatite dike in amphibolite or schist
N/A (The provided image is a storyboard/digital document)
Basalt
Mafic Volcanic Rock (composed of plagioclase, pyroxene, and olivine)
Sandstone with Liesegang Rings
Arenite with Iron Oxide Concretions
Clear Quartz
Silicon dioxide (SiO2)
Lapis Lazuli (Tumbled)
Lazurite-dominated contact metamorphic rock
Lapis Lazuli
Na8[Al6Si6O24]Sn (Lazurite-rich metamorphic rock)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz Crystal Point
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide mixture)
Shale with Iron Staining
Fissile Argillaceous Sedimentary Rock
Granite Pebble
Granite
Quartz with Schist Inclusion
Crystalline Silicon Dioxide (SiO2) with Muscovite/Biotite Schist
Quartz (Milky/Smoky variety)
Silicon Dioxide (SiO2)
Unable to Identify (Image Obscured)
Milky Quartz
Silicon Dioxide (SiO2)
Sandstone (Ferruginous)
Arenite (composed primarily of SiO2 with Fe2O3 staining)
Conglomerate
Conglomerate (clastic sedimentary rock)
Schist
N/A (a rock type, not a mineral formula)
Sandstone (Ferruginous)
Arenite (Fe2O3 stained)
Gneiss (specifically Granitic Gneiss)
Gneiss (composed primarily of Quartz, Feldspar, and Biotite/Amphibole)
Basalt with Quartz/Calcite Veins
Extrusive mafic igneous rock with hydrothermal mineralization
Quartz (Rock Crystal) with minor impurities
Quartz (SiO2)
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (SiO2 dominated)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Unknown Tumbled Stone
Unknown (Too Blurry)
Biotite Schist
Biotite Schist (Rich in K(Mg,Fe)3AlSi3O10(OH)2)
Sandstone
Arenite (Clastic Sedimentary Rock)
Sandstone (Picture Sandstone)
Sandstone (primarily Quartz with Iron Oxide impurities)
Basalt River Cobble
Basalt (Aphanitic Mafic Volcanic Rock)