Sandstone (Ferruginous)
Arenite (with Iron Oxide cement)
sedimentary
Category
Sedimentary (Anthropogenic)
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Sandstone pebble
Sandstone (SiO2 with iron oxides)
sedimentary
Sandstone nugget
Arenite (primarily Quartz SiO2)
sedimentary
Sandstone
Arenite (SiO2 primarily)
sedimentary
Sandstone with Quarzite clasts
Arenite (SiO2 based)
sedimentary
Sandstone (likely Quartzose Sandstone)
Arenite (composed primarily of SiO2)
sedimentary
Diorite (Dalmatian Stone)
Phaneritic Plutonic Diorite
igneous
Chert (specifically Red Chert/Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone (likely Graywacke or Arkose variant)
Clastic Sedimentary Rock (SiO2 dominated)
sedimentary
Chert (Red Jasper variant)
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone Pebble
Arenite (Siliclastic sedimentary rock)
sedimentary
Conglomerate
Conglomerate (a clastic sedimentary rock)
Sedimentary Rock
Limestone and Quartz Gravel with Petrified Wood
Sedimentary gravel aggregate and fossilized wood
sedimentary
Aragonite Star Cluster
Aragonite (Calcium Carbonate, CaCO3)
mineral
Precious Opal
Hydrated Silica (SiO2·nH2O)
mineral
Sandstone (with potential iron mineralization)
Arenite
sedimentary
Stromatolite
Biogenic sedimentary rock / Stromatolite
sedimentary
Sandstone
Sedimentary Rock (Quartz Arenite)
sedimentary
Sandstone
Sedimentary Rock (Quartz Sandstone)
sedimentary
Sandstone
Sedimentary Rock (Quartz arenite)
sedimentary
Sandstone (Weathered Pebble)
Sedimentary Rock (Quartz arenite)
sedimentary
Sandstone
Sandstone (Siliciclastic Sedimentary Rock)
sedimentary
Sandstone (with Iron Staining)
Arenite (Siliclastic sedimentary rock)
sedimentary
Siltstone
Siltstone (clastic sedimentary rock)
sedimentary
Fossilized Insect in Nodular Matrix
Invertebrata / Insecta fossil in sedimentary concretion
fossil
Sandstone
Sedimentary Clastic Rock (Quartz Arenite)
sedimentary
Sandstone
Clastic sedimentary rock (Quartz arenite)
sedimentary
Sandstone
Sedimentary Clastic Rock (Quartz arenite)
sedimentary
Sandstone
Arenite (SiO2 based sedimentary rock)
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone (likely Arkose or Quartz Sandstone)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Limonite (Ochreous Sandstone)
Hydrous ferric oxides (FeO(OH)qnH2O)
sedimentary
Sandstone (likely Quartzose)
Arenite
sedimentary
Common Opal
Hydrated amorphous silica (SiO2·nH2O)
mineral
Sandstone (Quartzite Pebble)
Arenite (SiO2)
sedimentary
Conglomerate
Conglomerate (a clastic sedimentary rock)
Sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (SiO2 dominant)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Quartz pebble
SiO2
mineral
Sandstone (likely Arkose or Lithic)
Clastic sedimentary rock (SiO2 + impurities)
sedimentary