Sedimentary Rock (Possibly Composed Of Various Minerals)

Schist

Schist (various mineral compositions)

Sandstone

Arenite (primarily SiO2)

Shale

Fissile mudrock (composed of clay-sized particles and detrital grains)

Sandstone

Arenite (primarily SiO2)

Sandstone (likely Arkosic)

Clastic Sedimentary Rock (primarily SiO2 with Feldspar)

Sandstone

Arenite (composed primarily of SiO2)

Quartz Vein in Host Rock

Quartz (SiO2) in Mafic or Sedimentary Matrix

Sandstone (Wonderstone)

Silicified Sandstone / Orthoquartzite with Liesegang rings

Fossil Shell Fragment (possibly Brachiopod or Bivalve)

Calcium Carbonate (CaCO3) - Phylum Brachiopoda or Mollusca

Basalt

Basalt (Aphanitic Mafic Volcanic Rock)

Diorite

Intrusive Igneous Rock (Intermediate Composition)

Sandstone

Arenite (composed primarily of SiO2)

Amber with inclusion

Amber (Fossilized Tree Resin)

Quartz (Druzy)

Silicon Dioxide (SiO2)

Carnelian Agate

Silicon Dioxide (SiO2) - variety of Chalcedony

Quartzite

Quartzite (primarily composed of SiO O₂)

Sandstone Pebbles

Arenite (Sedimentary rock composed of sand-sized grains)

Dalmatian Stone

Dalmatian Jasper (actually a Peralkaline Igneous Rock)

Granodiorite

Granodiorite (Intermediate intrusive igneous rock)

Sandstone

Arenite (composed primarily of SiO2)

Sandstone (with Lichen)

Arenite (primarily SiO2)

Clear Quartz

Silicon Dioxide (SiO2)

Sandstone

Arenite (composed primarily of Quartz, SiO2)

Pebble (likely Quartz or Chert)

SiO₂ (Silicon Dioxide) - referring to the likely main mineral composition, Quartz. If it's chert, the scientific name remains SiO₂ with a microcrystalline structure.

Sandstone (Red Arkose)

Sandstone (Arkose variant, primarily SiO2 with KAlSi3O8)

Sandstone

Arenite (SiO2 primarily)

Clear Quartz (Carved Merkaba)

Silicon Dioxide (SiO2)

Flagstone (Sandstone)

Clastic Sedimentary Rock (composed of quartz and feldspar)

Jasper (Mookaite style)

Jasper (Silica-rich Microcrystalline Quartz, SiO2)

Pink Granite

Phaneritic Felsic Igneous Rock (composed primarily of K-Feldspar, Quartz, and Mica)

Granodiorite

Granodiorite (Quartz-Feldspar-Biotite Plutonic Rock)

Granite Pebble

Granite (composed primarily of Quartz, Feldspar, and Mica)

Lapis Lazuli (Tumbled)

Lazurite-dominated contact metamorphic rock

Lapis Lazuli

Na8[Al6Si6O24]Sn (Lazurite-rich metamorphic rock)

Quartz Vein with Iron Staining

Silicon Dioxide (SiO2)

Sandstone (with Iron Staining)

Arenite (composed primarily of SiO2 with Fe2O3 staining)

Granite

Phaneritic plutonic rock (composed of quartz, alkali feldspar, and plagioclase)

Barite Rose (Desert Rose)

Barium Sulfate (BaSO4)

Sandstone (Greywacke/Lithic Sandstone)

Arenite (composed primarily of SiO2)

Chert (varietal: Flint Pitted Pebble)

Cryptocrystalline Quartz (SiO2)

Chalcedony in Matrix

Silicon Dioxide (SiO2)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)