Mineral On Sedimentary

Pyrite

Iron Disulfide (FeS2)

Marble

Metamorphosed Limestone (calcite formulation CaCO3)

Pyrite

Iron Pyrite (FeS2)

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Carnelian

SiO2 (Silicon Dioxide), a variety of Chalcedony

Green Calcite

Calcium Carbonate (CaCO3)

Hematite

Iron(III) oxide (Fe2O3)

Pyrite (on host rock/ore)

Iron Sulfide (FeS2)

Mica Schist

Mica Schist (predominantly Muscovite or Biotite sheet silicates)

Pyrite

Iron Sulfide (FeS2)

Yellow Jasper

Jasper (Silicon Dioxide, SiO2)

Pyrite

Iron Sulfide (FeS2)

Hematite

Iron(III) oxide (Fe2O3)

Quartz Geode

Silicon Dioxide (SiO2)

Agate (Chert/Chalcedony)

Silicon Dioxide (SiO2)

Plume Agate

Silicon Dioxide (SiO2)

Carnelian Agate

Silicon Dioxide (SiO2) with iron oxide impurities

Hematite

Iron(III) oxide (Fe2O3)

Clear Quartz

Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Schist

Mica Schist

Sandstone (Quartzose Sandstone)

Arenite

Jasper with Epidote

Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate (Ca2(Al,Fe)3(SiO4)3(OH))

Pyrite

Pyrite (Iron Disulfide), FeS2

Sandstone (Quartzose Sandstone)

Clastic Sedimentary Rock (Lithic arenite / Quartz arenite)

Sandstone

Arenite (primarily SiO2)

Sandstone

Arenite (primarily SiO2)

Sandstone (likely Quartzose type)

Clastic sedimentary rock (primarily SiO2)

Sandstone (Green/Yellow Siltstone variant)

Arenite or Siltstone (primarily SiO2 with mineral staining)

Gneiss (specifically a Granitic Gneiss)

Gneiss (Composition: Quartz, Feldspar, Mica)

Sandstone (likely Arkose)

Arenite (Feldspathic Sandstone / Arkose)

Quartz (Grain/Pebble)

Silicon Dioxide (SiO2)

Quartz (Milky/Common)

Silicon Dioxide (SiO2)

Chert (Jasper)

Silicon Dioxide (SiO2)

Crushed Stone / Gravel

Aggregatus saxum (variable mineral composition)

Sandstone (Quartz-rich)

Arenite (SiO2 based clastic rock)

Sandstone (with Liesegang rings or Oxidation)

Arenite (primarily Quartz SiO2 with Iron Oxide Fe2O3 staining)

Sandstone (Ferruginous)

Arenite (composed primarily of SiO2 with Fe2O3 cement)

Gneiss (Granitic Gneiss)

Gneiss (composed primarily of Quartz, Feldspar, and Mica/Amphibole)

Sandstone (Pebble)

Arenite (primarily SiO2)

Manganese-coated Sandstone

Clastic sedimentary rock with Manganese Oxide (often Pyrolusite or Psilomelane)

Sandstone

Arenite (primarily Quartz, SiO2)