Mineral Within Sedimentary Rock

Chert with Quartz Veining

Silicon Dioxide (SiO2)

Garnet (Almandine)

Almandine, Fe3Al2(SiO4)3

Pyrite

Iron Sulfide (FeS2)

Sandstone (with biological crust)

Arenite (SiO2 based)

Druzy Quartz

Silicon Dioxide (SiO2)

Chert (Jasper/Common Opal mix)

Microcrystalline Quartz (SiO2)

Clear Quartz Cluster

Silicon Dioxide (SiO2)

Sandstone (Yellow/Tan)

Clastic sedimentary rock (primarily SiO2 with iron oxide staining)

Red Sandstone (Iron-rich Sandstone)

Clastic Sedimentary Rock - Quartz Arenite / Arkose with Hematite Cement

Asphalt (Bituminous Pavement)

Bituminous mix (Aggregates with Bitumen binder)

Sandstone

Clastic Sedimentary Rock (composed mostly of SiO2)

Schist

Mica Schist (primarily Muscovite or Biotite sheet silicates)

Graveler (Fictional Interpretation)

Mons calcarius anthropomorphus

Druzy Quartz (on Quartzite or Chert)

Silicon Dioxide (SiO2)

Blue Chalcedony

Microcrystalline Quartz (SiO2)

Picture Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Amethyst Geode (polished heart-cut)

Silicon Dioxide (SiO2) with iron impurities

Sandstone

Arenite (primarily SiO2)

Basalt with Caliche Crust

Aphanitic Mafic Igneous Rock with Calcium Carbonate (CaCO3) coating

Labradorite

Labradorite (a variety of Plagioclase Feldspar), Na(AlSi3O8) to Ca(Al2Si2O8)

Dalmation Stone (Dyed)

Peralkaline rhyolite

Larvikite

Monzonite (intermediate intrusive igneous rock containing plagioclase, alkali feldspar, and minor dark minerals)

Mica Schist

Mica Schist (predominantly Muscovite or Biotite sheet silicates)

Sandstone

Arenite (composed primarily of SiO2)

Septarian Nodule (Dragon Stone)

Septarian Geode (CaCO3 + Mg + Fe)

Pebble (river rock/beach pebble)

Pebble (clast size class)

Fossilized Coral

Cnidaria (Anthozoa), often replaced by Calcium Carbonate (CaCO3) or Silica (SiO2)

Chert (variously known as Flint or Microcrystalline Quartz)

Silicon dioxide (SiO2)

Red Sandstone

Arenite (with Iron Oxide / Hematite staining)

Chert (Jasper-like Silicate)

Microcrystalline quartz (SiO2)

Banded Gneiss

Gneiss (Metamorphic Rock)

Quartz Geode Fragment

Silicon Dioxide (SiO2)

Quartz Geode

Silicon Dioxide (SiO₂)

Granitic Gneiss

Gneiss (containing Potassium Feldspar and Quartz)

Pyrite (on Quartz/Host Rock)

Iron Sulfide (FeS₂)

Green Aventurine

Silicon Dioxide (Quartz) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)

Gneiss (specifically Granite Gneiss)

Gneiss (High-grade Regional Metamorphic Rock)

Chert (Flint)

Microcrystalline Quartz (SiO2)

Sunstone (variety of Feldspar)

Oligoclase Sunstone, Plagioclase Feldspar (Na,Ca)Al(Si,Al)Si2O8

Sandstone

Arenite (composed primarily of SiO2)

Jasper

Jasper (Silicate - SiO2)

Gypsum (Wallboard/Drywall)

Calcium Sulfate Dihydrate (CaSO4·2H2O)