Sandstone (with Concretion)
Arenite / Quartzose Sandstone
Category
Browse sedimentary (jasper), mineral (aquamarine) specimens identified by the Rock Identifier community.
Sandstone (with Concretion)
Arenite / Quartzose Sandstone
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
Sandstone
Arenite (SiO2 based)
Sandstone
Arenite (composed primarily of SiO2)
Shale
Shale (fine-grained clastic sedimentary rock)
Shale
Shale (clastic sedimentary rock)
Sandstone (Banded)
Clastic Sedimentary Rock (primarily SiO2)
Sandstone (Banded)
Clastic sedimentary rock (primarily SiO2)
Sulfur (on Matrix)
Native Sulfur (S8)
Fossilized Fish Skeleton in Matrix
Vertebrata (Class: Actinopterygii), typically found in limestone or shale matrices
Yellow Calcite
Calcium Carbonate (CaCO3)
Quartz Geode
Silicon Dioxide (SiO2) within a geode
Quartz Geode
Silicon Dioxide (SiO2)
Satin Spar (Selenite)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
Shale
Fissile Mudstone
Sandstone (Ferruginous)
Sandstone (primarily SiO2 with Iron Oxide cement)
Fossilized Bivalve Shell
Bivalvia (fossil specimen)
Geode (Unopened)
Silica-rich concretion (SiO2)
Sandstone
Arenite (Sedimentary rock composed of sand-sized grains, primarily SiO2)
Sandstone with Ironstone Concretion
Arenite with Hematite/Goethite nodules (Fe2O3 / FeO(OH))
Dendritic Agate or Manganese Nodule in Chert/Limestone
Silicon Dioxide (SiO2) with Manganese Oxide (MnO2) inclusions
Foliated Metamorphic Rock (likely Gneiss or Schist)
Gneissic Metamorphic Rock
Sandstone (Red Arkose)
Sandstone (Arkose variant, primarily SiO2 with KAlSi3O8)
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrous ferric oxide)
Orange Calcite
Calcium Carbonate (CaCO3)
River Rock (likely Siltstone or fine-grained Sandstone)
Clastic Sedimentary Rock
Limonite (often after Hematite or Goethite)
Limonite (FeO(OH)·nH2O)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Shale
Shale
Collection of Minerals and Ores
Various (e.g., Uraninite (U3O8), Carbon (C), Native Gold (Au), Hematite (Fe2O3), Galena (PbS), etc.)
Snowflake Obsidian (Flower Jasper variant)
Vitreous volcanic silicate with cristobalite inclusions
Sandstone (Ferruginous)
Arenite (Siliclastic Sedimentary Rock)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Quartz Geode
Silicon dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Botryoidal Pyrite
Iron Sulfide (FeS2)
Brecciated Chert
Sedimentary Chert (SiO2) with Calc-Silicate mineralization
Sandstone
Arenite (SiO2 primarily)
Sandstone
Arenite (SiO2 based)
Sandstone (likely Arkosic)
Clastic Sedimentary Rock
Sandstone (likely Siltstone or fine-grained Sandstone)
Sedimentary Rock (Clastic)
Limonite/Hematite Ironstone
Goethite-rich Ironstone (FeO(OH) · nH2O)