Metamorphic Rock (Primarily Composed Of Minerals)

Granite

Granite (a common type of Felsic Intrusive Igneous Rock)

Blue Apatite

Apatite (Group), Ca5(PO4)3(F,Cl,OH)

Quartz Pebble (with Manganese dendrites/staining)

Silicon Dioxide (SiO2) with Manganese Oxide impurities

Magnetite (Small Granule)

Magnetite (Fe3O4)

Quartzite River Rock

Quartzite (SiO2)

Ferruginous Quartzite (Iron-stained Quartz)

Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3)

Anthracite Coal

Anthracite (Carbon-rich metamorphic rock)

Grey Agate (Banded Chalcedony)

Agate (Silicon Dioxide - SiO2)

Flower Agate

Chalcedony (Silicon Dioxide, SiO2) with Opaque Spherulitic Inclusions

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (primarily SiO2)

Drill Core Samples (Varied Lithology)

Multi-lithological core samples (containing potential granite, marble, and phyllite/schist sequence)

Gastropod Fossil (Snail Internal Mold)

Gastropoda; internal mold (steinkern), often composed of Calcium Carbonate (CaCO3) or Silica (SiO2)

Bumblebee Jasper

Fossiliferous Calcite containing Orpiment and Realgar

Agate

Agate (Silicon Dioxide, SiO2)

Blue Quartzite

Blue Quartzite (Primary mineral: Quartz, SiO2 with magnesio-riebeckite or crocidolite inclusions)

Quartzite River Rock

Metamorphic Quartzite (primarily SiO2)

Quartz with Mica (Schist/Pegmatite fragment)

Silicon Dioxide (SiO2) with Phyllosilicates (KAl2(AlSi3O10)(OH)2)

Note: Image shows a biological specimen (Rat), not a rock. Representative geological equivalent: Galena (due to lead-grey colors in fur).

Galena (PbS)

Clear Quartz (or Rock Crystal)

Quartz (SiO₂)

Quartz

Quartz (SiO2 - Silicon Dioxide)

Gneiss

Gneiss (High-grade metamorphic rock)

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Fe2O3 staining)

Pearl

Biogenic CaCO3 (Aragonite and Calcite)

Quartz Geode

Silicon Dioxide (SiO2)

Serpentine

Serpentine Group Minerals (e.g., Antigorite, Chrysotile, Lizardite)

Goethite (Iron Ore)

Goethite (FeO(OH))

Quartzite

Quartzite (primarily SiO2)

Coquina / Shelly Limestone

Bioclastic Limestone (composed of CaCO3)

Quartzite with Quartz Veining

Quartzite (primarily SiO2)

Rough Emerald/Green Beryl

Beryl (Be3Al2(SiO3)6) with trace amounts of Chromium or Vanadium

Vesicular Basalt (Iron-rich)

Scoriaceous Basalt / Oxidized Vesicular Basalt

Serpentine

Antigorite, Lizardite, or Chrysotile (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4

Ironstone Concretion (Boji Stone/Moqui Marble type)

Goethite/Hematite-encrusted Sandstone Concretion

Dalmatian Stone

Peralkaline Feldsphathic Igneous Rock

Sodalite

Sodalite (Na4Al3Si3O12Cl)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (primarily SiO2)

Epidote with Magnetite/Hematite inclusions

Epidote (Ca2(Al2,Fe3+)(SiO4)3(OH)) with Iron Oxides

Rose Quartz

Silicon Dioxide with trace inclusions of dumortierite or titanium (SiO2)