Sedimentary (Fossilized Organic Remain)

Rough Green Calcite

Calcite (Calcium Carbonate, CaCO3)

Mica Schist with Quartz

Mica-Quartz Schist (Muscovite subclass)

Mica Schist

Mica Schist (Composition typically contains Muscovite: KAl2(AlSi3O10)(OH)2 or Biotite: K(Mg,Fe)3AlSi3O10(OH)2 along with Quartz and Feldspar)

Sandstone (with biological crust)

Arenite (SiO2 based)

Sandstone (with manganese staining)

Clastic sedimentary rock (primarily SiO2)

Sandstone (Greywacke/Siltstone variant)

Clastic Sedimentary Rock (Lithic Wacke)

Sandstone (Banded)

Clastic Sedimentary Rock (primarily SiO2)

Painted River Rock

Anthropogenic-modified Siliciclastic Sedimentary Rock

Quartz Vein in Siltstone

SiO2 (Quartz) on clastic sedimentary matrix

Sandstone (with potentially high Feldspar/Arkose content)

Clastic sedimentary rock (SiO2 dominated)

Jasper Conglomerate (Puddingstone)

Jasper Conglomerate (Siliceous Sedimentary Rock)

Sandstone

Clastic sedimentary rock (primarily SiO2)

Chert / Flint Conglomerate

Silicified Sedimentary Breccia (primarily SiO2)

Sandstone (Quartzite-rich River Cobble)

Clastic sedimentary rock (primarily SiO2)

Sandstone (Banded)

Clastic sedimentary rock (primarily SiO2)

Sandstone (with banding/weathering)

Clastic Sedimentary Rock (primarily SiO2)

Sandstone (Banded)

Clastic Sedimentary Rock (primarily SiO2)

Sandstone (with Iron Staining)

Clastic Sedimentary Rock (primarily SiO2)

Sandstone

Clastic sedimentary rock (primarily SiO2)

Conglomerate (Asphaltic/Anthropogenic)

Clastic sedimentary rock / Bituminous mixture

Sandstone

Clastic sedimentary rock (primarily SiO2)

Sandstone

Clastic Sedimentary Rock (primarily SiO2)

Ferruginous Sandstone

Clastic Sedimentary Rock (Iron-rich)

Sandstone (specifically Banded Sandstone)

Clastic sedimentary rock (primarily SiO2)

Sandstone (Quartzose Sandstone)

Clastic sedimentary rock (primarily SiO2)

Sandstone (Quartzose Sandstone)

Clastic Sedimentary Rock (primarily SiO2)

Jasper Conglomerate (specifically Puddingstone)

Jasper Conglomerate (Siliceous sedimentary rock)

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2)

Sandstone (Quartzose Sandstone)

Clastic sedimentary rock (primarily SiO2)

Banded Sandstone (Liesegang Rings)

Sedimentary sandstone with Iron oxide precipitates

Concretion

Various mineral compositions, typically carbonate or iron oxide cemented sediment

Dinosaur Bone (Gembone)

Petrified Dinosaur Bone (Apatite/Silica replacement)

Chert (Nodule)

Silicon Dioxide (SiO2)

Chert (Flint)

Silicon Dioxide (SiO2)

Sandstone

Arenite (SiO2 based with various cements)

Sandstone

Arenite (primarily SiO2)

Sandstone (Quartzose)

Arenite (primarily SiO2)

Limestone

Calcium Carbonate (CaCO3)

Sandstone

Arenite (primarily SiO2)

Limestone

Calcium Carbonate (CaCO3)

Ironstone Concretion (Limonite/Goethite)

Goethite-rich Concretion (FeO(OH))

Sandstone (Quartzose)

Arenite (primarily SiO2)