Sandstone (Cross-bedded Drill Core)
Clastic Sedimentary Rock (primarily SiO2)
Category
Browse sedimentary (man made conglomerate) specimens identified by the Rock Identifier community.
Sandstone (Cross-bedded Drill Core)
Clastic Sedimentary Rock (primarily SiO2)
Travertine (often colloquially called Tufa)
Chemical Sedimentary Calcium Carbonate (CaCO3)
Sandstone (Glacial Cobble)
Arenite / Sedimentary Rock (primarily SiO2)
Fossiliferous Limestone
Calcite-rich Sedimentary Rock (CaCO3)
Sandstone (Pet Rock)
Clastic sedimentary rock (primarily SiO2)
Sandstone (Quartzose Sandstone)
Clastic sedimentary rock (primarily SiO2)
Fossiliferous Sandstone (with Brachiopod or Bivalve mold)
Clastic Sedimentary Rock with Macrofossil Mold
Oolitic Limestone
Oolite (Sedimentary rock composed of CaCO3)
Sandstone (Quartzite-rich Cobble)
Clastic sedimentary rock (primarily SiO2)
Dragon Stone
Argillaceous Sedimentary Rock (Ohko Stone)
Ferruginous Sandstone (Grit)
Clastic Sedimentary (Ironstone-rich Sandstone)
Sandstone (Graywacke)
Clastic Sedimentary Rock (Lithic Sandstone)
Sandstone (Quartzose Pebble)
Clastic sedimentary rock (primarily SiO2)
Red Sandstone (Arkose)
Clastic Sedimentary Rock (Lithic Arkose)
Anthracite Coal
Anthracite (Carbon-rich Sedimentary Rock)
Sandstone Concretion
Sedimentary Concretion (SiO2 or CaCO3 cemented)
Sandstone with Quartz Veining
Clastic sedimentary rock (SiO2 dominated)
Bituminous Coal
Organic sedimentary rock (humic coal)
Banded Sandstone (Differential Weathering)
Clastic Sedimentary Rock (primarily SiO2)
Tumbled Carnelian and Quartz Mix
Silicon Dioxide (SiO2) with iron oxide impurities
Shale or Mudstone (Based on appearance)
Shale (fine-grained, laminated fissile sedimentary rock) / Mudstone (fine-grained, non-fissile sedimentary rock)
Travertine
Terrestrial Sedimentary Rock (Calcium Carbonate, CaCO3)
Blue Apatite
Apatite - Ca5(PO4)3(F,Cl,OH)
Limestone with Chert or Siltstone bands
Sedimentary carbonate rock (CaCO3) often with siliceous impurities
Quartz (Pale Rose or Milky Variety)
Silicon Dioxide (SiO2)
Zebra Jasper
Silicon Dioxide (SiO2) - Macro-crystalline Quartz/Chert with impurities
Chert (Nodular Chert)
Microcrystalline Silica (SiO2)
Chert (Holey Stone)
Microcrystalline Quartz (SiO2)
Bloodstone Jasper (Heliotrope)
SiO2 (Silicon Dioxide) - Cryptocrystalline Quartz
Red Jasper (possibly Wonderstone)
Silicon Dioxide (SiO2) with iron oxide inclusions
Chert (Nodule)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Red Jasper (possibly Brecciated Jasper or Bloodstone variety)
Jasper (Silicon Dioxide, SiO2)
Sandstone
Arenite (SiO2 primarily)
Pyrite
Iron Pyrite (FeS₂)
Dyed Howlite (Dyed Red)
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)
Quartz Geode
Silicon Dioxide (SiO2)
Red Jasper (Polished)
Silicon Dioxide (SiO2) with Hematite inclusions
Optical Calcite (Iceland Spar)
Calcite (CaCO3)
Sandstone (clastic)
Clastic Sedimentary Rock (primarily composed of SiO2)
Quartz Geode (with Calcite influence)
Silicon Dioxide (SiO2) with possible Calcium Carbonate (CaCO3)
Quartz Geode (Cracked)
Silicon Dioxide (SiO2)
Yellow Calcite
Calcium Carbonate (CaCO3)