Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions
Category
Browse sedimentary (primary) with artificial modification specimens identified by the Rock Identifier community.
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3) inclusions
Sandstone (likely Arkosic)
Clastic Sedimentary Rock (Sandstone)
Sandstone (Ferruginous)
Clastic Sedimentary Rock (Litharenite)
Sandstone (Quartzose)
Arenite (primarily SiO2)
Sandstone (with Iron Staining)
Clastic Sedimentary Rock (primarily SiO2 with FeO(OH) impurities)
Geode (unopened) or Calcareous Nodule
Siliceous or Calcareous Concretion/Nodule
Sandstone
Arenite (primarily SiO2)
Sandstone (Tumbled/River Pebble)
Arenite (composed primarily of SiO2)
Limonite / Ironstone Nodule
Limonite (Hydrated iron(III) oxide-hydroxide), FeO(OH)·nH2O
Conglomerate
Conglomerate (clastic sedimentary rock)
Conglomerate
Conglomerate (clastic sedimentary rock)
Chert (often called Flint when dark)
Sedimentary cryptocrystalline quartz (SiO2)
Granite
Granite (a felsic intrusive igneous rock)
Sandstone (likely Quartzose Sandstone)
Arenite (composed primarily of SiO2)
Sandstone
Sandstone (Sedimentary rock composed of silicate grains)
Sandstone
Arenite (primarily SiO2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Conglomerate
Clastic sedimentary rock (Polymictic Conglomerate)
Bituminous Coal
Organic Sedimentary Rock (Carbon-based)
Sandstone Pebbles
Arenite (Sedimentary rock composed of sand-sized grains)
Sandstone
Arenite (SiO2 based)
Sandstone
Clastic Sedimentary Rock (composed of SiO2 grains)
Glauconite (Sandstone or Shale)
Glauconite (K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2
Sandstone
Arenite (primarily SiO2)
Fossiliferous Limestone
Fossiliferous Limestone (CaCO3)
Limestone
Calcium Carbonate (CaCO3)
Sandstone
Arenite (primarily SiO2)
Metaconglomerate
Metaconglomerate (Quartzite conglomerate)
Limestone
Calcium Carbonate (CaCO3)
Sandstone
Arenite (composed primarily of SiO2)
Sandstone (Quartzose Sandstone)
Arenite (primarily SiO2)
Red Jasper
Silicon Dioxide (SiO2) - variety Jasper
Red Garnet
Almandine Garnet (Fe3Al2(SiO4)3)
Sulfur (with possible Cullet Glass or Slag imitation)
Native Sulfur (S8)
Yellow Calcite
Calcium Carbonate (CaCO3)
Amber (specifically Red or Cherry Amber)
Succinite (Resinite); Chemical formula: C10H16O
Honey Calcite
Calcium Carbonate (CaCO3)
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
Gold
Native Gold (Au)
Clear Quartz Fragment
Quartz (Silicon Dioxide, SiO2)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Amber-bearing Coal/Sedimentary Rock
Bituminous coal or carbonaceous siltstone with Fossilized Tree Resin (C10H16O)