Gneiss
Foliated Metamorphic Rock (Gneiss)
metamorphic
Category
Sedimentary Rock
Browse sedimentary rock specimens identified by the Rock Identifier community.
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Sandstone Pebble
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Agate Geode Slice (with Druzy Quartz)
Silicon Dioxide (SiO2)
mineral
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite (primarily SiO2 with iron oxide cement)
sedimentary
Sandstone Pebble
Arenite (primarily SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite (with high iron oxide content)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Ferruginous Sandstone
Arenite with Iron-oxide cement
sedimentary
Limestone (specifically Grainstone or Micrite)
Calcium Carbonate (CaCO3)
sedimentary
Sandstone
Arenite (often composed of Quartz, SiO2)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Dalmatian Stone
Peralkaline rhyolite
igneous
Sandstone (Red/Brown Variety)
Arenite (SiO2 with iron oxide impurities)
sedimentary
Limestone
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Quartz-veined Siltstone
Siltstone with Quartz (SiO2) veins
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Sandstone (Ferruginous)
Arenite (with Iron Oxide cement)
sedimentary
Sandstone (Ferruginous/Banded)
Clastic Terrigenous Sandstone (SiO2 with Fe2O3 cement)
sedimentary
Dalmation Stone
Peralkaline Rock (SiO2 with Arfvedsonite)
igneous
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite/Quartz Arenite
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Jasper or Chalcedony
Microcrystalline Quartz (SiO2)
sedimentary
Dalmatian Stone (often called Dalmatian Jasper)
Peralkaline Feldsphathic Igneous Rock
igneous
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone (with Lichen)
Arenite (composed primarily of SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite with Iron-Oxide Cement
sedimentary
Clear Quartz
Silicon dioxide (SiO2)
mineral
Chalk (Sedimentary Limestone)
Calcium Carbonate (CaCO3) - Bioclastic Limestone
sedimentary
Conglomerate
Conglomeratic Sandstone / Sedimentary Breccia
sedimentary
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
sedimentary
Red Sandstone
Arenite (primarily Quartz with Iron Oxide)
sedimentary
Sandstone (Ferruginous)
Arenite with Iron Oxide cement
sedimentary
Geode (Unopened)
Silicon Dioxide (SiO2) in sedimentary vugs
sedimentary
Sandstone (with Concretion)
Arenite / Quartzose Sandstone
sedimentary
Sandstone (Quartzose)
Arenite (composed mainly of SiO2)
sedimentary
Sandstone (likely Quartzose Sandstone)
Arenite (primarily SiO2)
sedimentary