River Pebble (Siltstone/Mudstone)
Clastic sedimentary rock
Category
Browse sedimentary (primary) with artificial modification specimens identified by the Rock Identifier community.
River Pebble (Siltstone/Mudstone)
Clastic sedimentary rock
River Rock (likely Siltstone or fine-grained Sandstone)
Clastic Sedimentary Rock
Conglomerate
Clastic sedimentary conglomerate
Shale
Lutaceous Sedimentary Rock
Sandstone
Arenite (composed primarily of SiO2)
Sandstone (Ferruginous)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 staining)
Geode (Unopened)
Siliceous Septarian Concretion / Geode (SiO2)
Gastropod Fossil (Internal Mold)
Phylum Mollusca, Class Gastropoda (Steinkern)
Sandstone Concretion
Clastic sedimentary rock (primarily Silica, SiO2, or Calcium Carbonate, CaCO3)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Sandstone
Arenite (SiO2 predominantly)
Sandstone or Mudstone
Sedimentary Rock (Sandstone/Mudstone)
Sandstone
Clastic Sedimentary Rock (composed primarily of Quartz: SiO2)
Herkimer Diamond
Quartz (Silica - SiO2)
Pyrite in Matrix (Fool's Gold)
Iron Sulfide (FeS2)
Sandstone (likely Quartzose type)
Clastic sedimentary rock (primarily SiO2)
Sandstone
Sandstone (clastic sedimentary rock), primarily SiO2
Sandstone
Arenite (SiO2 principal)
Blue Chalcedony (Tumbled)
Silicon Dioxide (SiO2)
Quartz on Sandstone
Silicon Dioxide (SiO2) in Lithic Sandstone
Sandstone
Arenite (composed primarily of SiO2)
Sandstone
Clastic sedimentary rock (Quartz arenite/Arkose)
Sandstone (Ferruginous)
Arenite with Iron Oxide cement (primarily SiO2 with Fe2O3)
Sandstone
Arenite (primarily SiO2)
Sandstone
Arenite (primarily SiO2 - Silicon Dioxide)
Sandstone (Pebble)
Arenite (primarily SiO2)
Sandstone
Arenite (primarily SiO2)
Chert (or Chalcedony)
Microcrystalline Quartz (SiO2)
Limonite (Ochreous)
FeO(OH)·nH2O (Hydrated Iron Oxide)
Sandstone (Ferruginous)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)
Sandstone (Quartzite Pebble)
Arenite (SiO2)
Chert (Jasper/Flint variant)
Microcrystalline Quartz (SiO2)
Limonite stained Sandstone
Sedimentary rock with Goethite/Limonite (FeO(OH)·nH2O)
Shale
Laminated Mudstone
Fish Fossil in Limestone
Lycoptera (likely) in Micritic Limestone
Red Jasper (possibly Agatized Jasper)
Jasper (Silicon Dioxide, SiO2 with Fe2O3 inclusions)
Quartz Druze on Matrix
Silicon Dioxide (SiO2)
K2 Jasper (Beads)
Granodiorite with Azurite and Malachite
Biotite Mica
K(Mg,Fe2+)3(Al,Fe3+)Si3O10(OH,F)2
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily Quartz, SiO2)
Sandstone (Banded)
Clastic Sedimentary Rock (primarily SiO2)
Sandstone (with potential Quartzite characteristics)
Clastic sedimentary rock (primarily SiO2)