Not A Rock

Bauxite

Aluminium ore (Hydrated aluminium oxides AlOx(OH)3-2x)

Granite (rounded cobble)

Granite; chiefly quartz, potassium feldspar, plagioclase, and mica

N/A (Non-Geological Specimen)

Clam shell (likely a bivalve shell)

Bivalvia; shell composed primarily of calcium carbonate (usually aragonite and/or calcite)

Bauxite

Bauxite (Mixture of Al(OH)3, AlO(OH), and Fe2O3)

Marine gastropod shell

Calcium-carbonate shell, primarily aragonite; species cannot be determined from the image

Fossilized ammonite

Ammonoidea (likely a small, chambered ammonite fossil)

Bauxite

Bauxite (mixture of Hydrous Aluminum Oxides)

Note: Item is not a geological specimen

Guitar Components (Steel, Nickel, Plastic, Wood)

Lapis Lazuli

Complex rock primarily containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2

Lapis Lazuli (Raw)

Lazurite-rich metamorphic rock; Na3Ca(Al3Si3O12)S

Pink granite

Coarse-grained felsic intrusive rock, chiefly quartz, potassium feldspar, plagioclase, and biotite/hornblende

Note regarding baguette production (not a rock)

Digital text image - Somali language

Lapis Lazuli

Lapis Lazuli (Primary mineral: Lazurite (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2)

Bauxite

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

Bauxite

Alumina ore (Mixture of Gibbsite, Boehmite, and Diaspore)

Bauxite (Pisolitic Bauxite)

Bauxite (mixture of Hydrous Aluminum Oxides)

Natural Pearl

Calcium carbonate (primarily Aragonite and Conchiolin), CaCO3

Lapis Lazuli (polished cabochon)

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

N/A - Image does not contain a rock or mineral

Anthropogenic textile material

Polished brecciated jasper

Jasper, an opaque microcrystalline variety of quartz (SiO₂), with iron-oxide coloration and possible breccia fragments

Note: This is a Man-Made Object (Costume/Prop Patch)

Synthetic fiber and pigments (Cellulose/Plastic-based composite)

Bauxite

Bauxite (Mixture including Gibbsite Al(OH)3, Boehmite γ-AlO(OH), and Diaspore α-AlO(OH))

Man-made Synthetic Material (Plastic/Composite)

Acrylonitrile Butadiene Styrene (ABS) or High-Impact Polystyrene (HIPS)

Lapis Lazuli

Na8(Al6Si6O24)S2 (composed primarily of Lazurite, Calcite, and Pyrite)

Lapis lazuli

Lapis lazuli; primarily lazurite (Na₃Ca(Si₃Al₃)O₁₂S), with calcite and pyrite

Lapis Lazuli (Raw Ore)

Na8[Al6Si6O24]n(S,Cl,SO4,OH)2 (Lazurite component)

Baroque cultured pearl necklace

Pearl: nacre composed mainly of aragonite (CaCO₃) and conchiolin

Lapis Lazuli

Lapis Lazuli (Complex aggregate mainly of Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Lapis Lazuli

Lapis Lazuli (Rock composed primarily of Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Calcite, and Pyrite)

Bauxite (Laterite Clay)

Bauxite (mixture of Hydrous Aluminum Oxides: Gibbsite Al(OH)3, Boehmite and Diaspore AlO(OH))

Note: Item is not a geological specimen

Homo sapiens (Dermal Appendage: Pilus)

Lapis Lazuli

Lapis Lazuli (Primary mineral: Lazurite, (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Lapis Lazuli

Lazurite-rich metamorphic rock ((Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Lapis Lazuli

Lapis Lazuli (A complex rock primarily composed of Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Lapis Lazuli

Lazurite-rich metamorphic rock

Polished amber

Fossilized tree resin (primarily organic polymerized diterpenes)

Lapis Lazuli

Na8[Al6Si6O24]S2 (Lazurite component), a rock composed primarily of Lazurite, Calcite, and Pyrite

Lapis Lazuli

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

Amber beads

Amber, fossilized plant resin; largely polymerized terpenoid resin (not a mineral)

Fossilized tooth, likely mammoth or mastodon molar fragment

Proboscidean molar enamel and dentin; Mammuthus or Mammut sp. (tentative)

Note: Item is not a geological specimen

n/a