Lapis Lazuli
Lapis Lazuli (a rock type, not a single mineral, composed primarily of lazurite, calcite, and pyrite)
Category
Browse anthropogenic sedimentary (man made) specimens identified by the Rock Identifier community.
Lapis Lazuli
Lapis Lazuli (a rock type, not a single mineral, composed primarily of lazurite, calcite, and pyrite)
Sandstone or Siltstone
Arenite (if sandstone)
Smoky Quartz
Smoky Quartz (SiO2)
Quartz pebble
Silicon dioxide (SiO2)
Generic Pebble / Rock Fragment
Lithic fragment / Weathered rock
Sandstone
Arenite (primarily SiO2)
Sedimentary Sandstone
Arenite (Sedimentary Rock)
Shale (or Mudstone/Siltstone)
Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
Shale
Shale (clastic sedimentary rock)
Banded Siltstone / Mudstone Pebble
Siltstone / Argillite
Jade (Nephrite or Jadeite)
Nephrite (Ca2(Mg,Fe)5Si8O22(OH)2) or Jadeite (Na(Al,Fe3+)Si2O6)
Sandstone (Ferruginous)
Clastic sedimentary rock (SiO2 with Fe2O3)
Sandstone (Garden Boulder)
Sandstone (SiO2 dominated)
Sandstone (lithic)
Lithic Wacke / Arenite
Fossiliferous Concretion
Septarian Concretion containing Brachiopods/Crinoids
Gold
Aurum (Au)
Orange Calcite
Calcium Carbonate (CaCO3)
Shale fragment
Shale (clay mineral rich sedimentary rock)
Shale / Mudstone
Sedimentary rock (Claystone / Mudstone / Shale)
Brown Sandstone (River Rock)
Arenite
Shale
Sedimentary Shale
Shale and Pebble Fragment
Sedimentary Rock (Mudstone/Shale with Silica Pebble)
Shale
Argillaceous sedimentary rock
Mudstone
Argillite / Siliciclastic sedimentary rock
Sandstone (Water-worn pebble)
Arenite (primarily SiO2)
Shale
Argillite / Shaly Mudstone
Rose Quartz (likely carved)
Rose Quartz (SiO2)
Rose Quartz Carving
Quartum roseum (Variety of Quartz, SiO2)
Shale or Slaty Mudstone
Argillaceous sedimentary rock
Cone-in-cone structure (Limestone)
Cone-in-cone structure (Secondary Sedimentary Structure)
Shale (Ferruginous)
Laminated Mudrock (Siliciclastic Sedimentary Rock)
Weathered iron-rich sandstone or ferruginous siltstone
Clastic sedimentary rock, likely quartz-rich sandstone cemented by iron oxides (Fe₂O₃/Fe₃O₄)
Sandstone pebble
Sandstone (mainly Quartz, SiO2)
Sandstone
Arenite
Sandstone
Arenite
Shale with Iron Staining
Fissile Mudrock (Sedimentary Rock)
Rounded brown pebble, likely weathered sandstone or iron-stained quartzite
Probable quartz-rich sandstone (SiO₂-dominated); exact identification requires testing
Shale
Shale (Fine-grained clastic sedimentary rock)
Sandstone
Clastic sedimentary rock (primarily quartz arenite)
Sandstone (Quartz Sandstone)
Arenite (primarily SiO2)
Shale
Shale (Consolidated fine-grained clay/silt)
Chert Breccia
Brecciated Chert (Microcrystalline Silica)