Mineral On Sedimentary Rock

Sandstone (Ferruginous)

Arenite (Fe-rich)

Petrified Wood

Silicified Wood (primarily SiO2)

Gneiss (specifically Granite Gneiss)

Gneiss (High-grade Regional Metamorphic Rock)

Banded Sandstone (River Pebble)

Clastic Sedimentary Rock (primarily Quartzite and Feldspar grains)

Carnelian (Agate)

SiO2 (Silicon Dioxide with Iron Oxide impurities)

Carnelian

Carnelian (a variety of Chalcedony, SiO2)

Halite

Halite (Sodium Chloride, NaCl)

Red Sandstone

Arenite (Fe2O3-rich)

Agate (Crazy Lace or Eye Agate)

Silicon Dioxide (SiO2)

Schist (Biotite Schist)

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

Breccia

Breccia

Siltstone/Sandstone (possibly Wonderstone or Picture Sandstone)

Clastic Sedimentary Rock (primarily SiO2 with Iron Oxide inclusions)

Metaconglomerate

Protolith: Conglomerate (comprising SiO2, Al2O3, etc.)

Lava Stone and Chakra Beads

Basalt (with various mineral/synthetic beads)

Sandstone Beach Pebble

Clastic Sandstone (SiO2 - Quartz-dominant)

Folded Schist / Gneiss (Metamorphic Rock)

Regional Metaphoric Folded Outcrop (predominantly Schist/Gneiss)

Geode (unopened)

Calcedony-lined Geode (SiO2)

Sandstone

Sandstone (clastic sedimentary rock, composed predominantly of sand-sized minerals or rock fragments)

Ferruginous Sandstone (Gritstone)

Arenite with Iron-Oxide Cement (SiO2 with Fe2O3 and FeO(OH))

Ruby in Kyanite

Al2O3 (Corundum) in Al2SiO5 (Kyanite-Fuchsite-Quartz)

Quartz Geode in Sedimentary Matrix

Silicon Dioxide (SiO2) within a limestone/dolostone host

Quartz (Common Milky Quartz)

Silicon Dioxide (SiO2)

Red Sandstone

Arenite (with Iron Oxide)

Red Jasper with Quartz Veining

Jasper (Silicon Dioxide, SiO2) with Quartz (SiO2) inclusions

Red Sandstone

Arenite (with Iron Oxide / Hematite cementation)

Granite Gneiss

Felsic Gneiss

White Agate (Chalcedony)

Silicon Dioxide (SiO2)

Sandstone

Arenite (composed primarily of SiO2)

Jasper

Jasper (Cryptocrystalline Quartz; SiO2)

Banded Agate (specifically Carnelian Agate slice)

Chalcedony (cryptocrystalline variety of Quartz), SiO2

Milky Quartz in Conglomerate Matrix

Silicon Dioxide (SiO2) within Clastic Sedimentary Rock

Pyrite in Shale

Iron Sulfide (FeS2) in Sedimentary Matrix

Slate

Foliated Metamorphic Rock (composed primarily of Quartz, Muscovite, and Illite)

Quartz (Clear Quartz/Rock Crystal)

Silicon Dioxide (SiO2)

Chalcedony (Botryoidal/Agate nodule)

Microcrystalline Quartz (SiO2)

Banded Agate (with Quartz Geode Center)

Silicon Dioxide (SiO2)

Sandstone (Red Flagstone)

Clastic sedimentary rock (primarily Quartz - SiO2)

Conglomerate (River Rock Aggregate)

Conglomerate (Lithic-clast conglomerate)

Quartz Pebble (Geode-like)

Silicon Dioxide (SiO2)

Halite

Halite (Sodium Chloride, NaCl)

Banded Gneiss

Gneiss (High-grade Metamorphic Rock)

Fossil Sand Dollar (Echinoidea)

Phylum Echinodermata, Class Echinoidea (likely Dendraster or Scutella)