Mineral

Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Turquoise (Rough Specimens)

Hydrous phosphate of copper and aluminium - CuAl6(PO4)4(OH)8·4H2O

Mixed Gemstone Collection

SiO2 (Quartz varieties) and Biogenic CaCO3 (Nacre)

Quartz Geode (Nodule)

Silicon Dioxide (SiO2)

Sandstone with Concretions / Liesegang Rings

Arenite with iron oxide banding

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite

Sandstone with Quartz Vein

Arenite with SiO2 intrusion

Gneiss

Gneiss (High-grade metamorphic rock)

Sapphire (Raw/Rough)

Corundum (Al2O3)

Marble

Metamorphic rock composed of Recrystallized Carbonate Minerals (chiefly CaCO3)

Banded Rhyolite (likely Green Jasper/Agate variety)

Silicon Dioxide (SiO2) with mineral inclusions

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Blue Apatite

Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)

Wallboard/Drywall (Gypsum-based)

Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

Iron (Hematite variety)

Iron (Fe) / Hematite (Fe2O3)

Sandstone (Ferruginous)

Arenite (with Iron Oxides)

Turquoise

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

Red Sandstone

Arenite (primarily Quartz with Hematite cement)

Lepidolite

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lithium-bearing Phyllosilicate)

Red Sandstone

Sandstone (principally Quartz with Iron Oxide coating)

Limonitic Sandstone (Stained Sandstone)

Clastic Sedimentary Rock with Iron Oxide (Limonite/Goethite) staining

Red Sandstone (Hematitic)

Clastic sedimentary rock (SiO2 with Fe2O3 inclusions)

Sandstone (with Iron Staining)

Clastic Sedimentary Rock (primarily Quartz, SiO2)

Sandstone (Ferruginous)

Arenite (with Goethite/Limonite cement)

Sandstone

Arenicola (comprising mostly Quartz, SiO2)

Gossan (Iron Hat) with Quartz and Chlorite

Limonite/Goethite-rich Gossan (FeO(OH)·nH2O) with inclusions of Quartz and Chlorite

Quartz with mica and feldspar (Pegmatite fragment)

Granitic Pegmatite (composed mainly of SiO2 with KAlSi3O8)

Fossilized Shark Tooth (Basal Bone)

Otodus sp. (Mineralized Hydroxyapatite)

Serpentinite

Serpentinite (composed primarily of serpentine-group minerals like antigorite, chrysotile, and lizardite; chemical formula varies but generally Mg3Si2O5(OH)4)

Quartzite with Dark Mineral Inclusions

Quartzite (primarily SiO2) with accessory minerals

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic Extrusive)

Sandstone (likely Arkosic or Quartzose)

Arenite (SiO2 based with mineral inclusions)

Turquoise

Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)

Shale

Shale

Gneiss (likely)

Gneiss

Sandstone (likely Quartzose Sandstone)

Arenite (composed primarily of SiO2)

Milky Quartz with inclusions

Quartz (Silicon Dioxide, SiO2)

Rainbow Fluorite

Fluorite (Calcium Fluoride, CaF2)

Rough Green Fluorite

Fluorite (Calcium Fluoride - CaF2)

Green Fluorite

Fluorite (Calcium Fluoride - CaF2)

Howlite

Howlite (Ca2B5SiO9(OH)5)

Blue Apatite

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