Organic Materia (Not A Rock Or Mineral)

Granite Pebble (Weathered)

Phaneritic Felsic Igneous Rock

Milky Quartz

Silicon Dioxide (SiO2)

Lapis Lazuli (polished cabochon)

Lazurite-rich metamorphic rock (approx. Na6Ca2Al6Si6O24(SO4,S,Cl)2)

Lapis Lazuli

Sodium aluminum silicate with sulfur (main component: Lazurite [(Na,Ca)8(AlSiO4)6(SO4,S,Cl)2])

Bauxite

Bauxite (Al2O3·2H2O)

Basalt with Quartz/Calcite Veins

Basalt (Aphanitic Mafic Volcanic Rock) with Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3) inclusions

Sandstone (likely Quartzose Sandstone)

Arenite (primarily SiO2)

Sandstone (Greywacke/Siltstone variant)

Clastic Sedimentary Rock (composed primarily of Quartz SiO2 and Feldspar)

Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

Druzy Quartz on Matrix (likely Limestone or Sandstone)

Silicon Dioxide (SiO2) with various trace impurities

Fossil Shark Tooth (Otodus obliquus)

Otodus obliquus; hydroxyapatite (mineralized form Ca5(PO4)3(OH))

Goethite

Goethite (FeO(OH))

Epidote

Epidote (formula: Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

Basalt with Quartz/Calcite Veins

Basalt (Aphanitic Mafic Igneous Rock)

Fire Opal (in Matrix)

Hydrated Silica (SiO2·nH2O)

Amber

Amber (Fossilized Tree Resin)

Jasper (Multi-color Chert)

Silicon dioxide (SiO2)

Hematite Nodules (Moqui Marbles style)

Iron Oxide (Fe2O3)

Clear Quartz

SiO2 (Silicon Dioxide)

Red Sandstone

Arenite (with Iron Oxide)

Clear Quartz Crystal

Quartz (Silicon Dioxide, SiO2)

Bauxite

Bauxite (Al(OH)3, γ-AlO(OH), and α-AlO(OH))

Pink Granite

Phaneritic Plutonic Felsic Igneous Rock (Granite)

Orthoceras Fossil Limestone

Orthoceras (extinct Cephalopod fossil) in Matrix

Grey Agate (Tumbled)

Silicon Dioxide (SiO2)

Turquoise (set in silver jewelry)

Turquoise - CuAl6(PO4)4(OH)8·4H2O (Hydrated copper and aluminum phosphate)

Turquoise

CuAl6(PO4)4(OH)8·4H2O

Conglomerate

Conglomerate rock

Gneiss (specifically a weathered Amphibolite or Garnet Gneiss)

Gneiss (complex silicate composition)

Quartz Vein in Host Rock (Pebble)

Quartz (SiO2) with sandstone or siltstone matrix

Amphibolite with Hornblende

Amphibole-rich Metamorphic Rock (Ca2(Mg,Fe)5Si8O22(OH)2)

Dalmatian Stone

Dalmatian Stone (a peralkaline igneous rock consisting of Feldspar, Quartz, and Arfvedsonite)

Quartz with Iron Staining

Silicon Dioxide (SiO2) with Ferruginous Oxides

Granular Sandstone

Arenite (variable composition, primarily SiO2)

Serpentinite

Serpentinite (a rock composed predominantly of serpentine group minerals)

Chert (specifically Gray/Blue Chert)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Sandstone (Weathered)

Arenite (primarily SiO2)

Sandstone (clastic)

Clastic Sedimentary Rock (primarily composed of SiO2)

Chert (Iron-stained)

Chert (primarily Microcrystalline Quartz, SiO2)

Sandstone (likely Graywacke or Lithic Sandstone)

Clastic Sedimentary Rock

Asphalt Concrete

Bituminous conglomerate

Sandstone (Quartzose)

Arenite (primarily SiO2)