Sedimentary (Fossilized Organic Remains)

Red Sandstone

Clastic sedimentary rock (primarily SiO2 with Fe2O3)

Ironstone (Limonitic Shale)

Ferruginous Siltstone / Goethite-rich Sedimentary Rock

Greenschist

Chlorite schist

Orange Calcite

Calcium Carbonate (CaCO3)

Schist (Biotite Schist)

Biotite-bearing Schist (K(Mg,Fe)3AlSi3O10(F,OH)2)

Orange Calcite

Calcium Carbonate (CaCO3)

Sandstone

Arenite (composed primarily of SiO2)

Sandstone

Arenite (Sedimentary rock comprising sand-sized grains)

Sandstone (with Liesegang rings or joints)

Clastic Sedimentary Rock (primarily Quartz with Iron Oxide cement)

Geode with Iron-Stained Quartz/Calcite

Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3) in Sedimentary Matrix

Ironstone Pebble

Ferruginous sedimentary rock (Fe2O3 / FeO(OH) mixed with SiO2)

Sandstone (River Cobble)

Clastic sedimentary rock (primarily SiO2 with various lithic fragments)

Red Sandstone

Clastic Terrigenous Sedimentary Rock (composed mostly of SiO2 with Fe2O3)

Siltstone/Sandstone (possibly Wonderstone or Picture Sandstone)

Clastic Sedimentary Rock (primarily SiO2 with Iron Oxide inclusions)

Sandstone (Banded Sandstone)

Clastic Sedimentary Rock (primarily SiO2 with iron oxide impurities)

Limestone

Calcium Carbonate (CaCO3)

Limestone

Calcium Carbonate (CaCO3)

Siltstone

Siltstone (primarily SiO2 with Al2O3 and Fe2O3)

Sandstone (with Iron Staining)

Arenite (composed primarily of SiO2 with Fe2O3 staining)

Sandstone (Quartzose)

Arenite (composed primarily of SiO2)

Sandstone

Arenite (primarily SiO2)

Green Schist

Greenschist (composed primarily of Chlorite, Actinolite, and Epidote)

Chert (Limestone-based)

Silicon Dioxide (SiO2)

Red Sandstone

Arenite (primarily Quartz with Hematite cement)

Ferruginous Sandstone

Arenite with Hematite/Limonite cement

Red Jasper

Jasper (Silicon Dioxide, SiO2 with iron oxide impurities)

Jasper with Hematite inclusions

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3)

Sandstone (specifically Red Sandstone)

Arenite (SiO2 with Iron Oxide)

Chert (with Quartz Veining)

Microcrystalline Quartz (SiO2)

Ammonite Fossil

Ammonoidea (subclass)

Yellow Jasper

Silicon Dioxide (SiO2) with Iron inclusions

River Jasper (Chert/Chalcedony mix)

Silicon Dioxide (SiO2) with iron oxide and chlorite inclusions

Jasper

Silicon Dioxide (SiO₂)

Sandstone (Red)

Arenite (primarily SiO2 with Iron Oxide staining)

Limonite (Iron-rich Siltstone / Sandstone base)

Hydrous ferric oxide mixture (FeO(OH)·nH2O)

Sandstone (Red/Brown Variety)

Arenite (composed primarily of SiO2 with Fe2O3 iron oxide inclusions)

Ironstone (likely siderite or goethite-rich siltstone)

Ferruginous Siltstone

Chert (Iron-stained)

Microcrystalline Quartz (SiO2)

Sandstone

Arenite (primarily SiO2)

Conglomerate

Conglomerate (Rock composed predominantly of rounded clasts > 2mm)

Limestone

Calcium Carbonate (CaCO3)

Quartz (Druzy or Geode fragment)

Silicon Dioxide (SiO2)