Not A Rock

Lapis Lazuli

Lapis Lazuli (Mineral composition: Lazurite (Na,Ca)8(AlSiO4)6(SO4,S,Cl,OH)2, Calcite, and Pyrite)

Note: Item is not a geological specimen

Homo sapiens (Dermal Appendage: Pilus)

Lapis Lazuli

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

Anthracite Coal

Anthracite (a variety of coal, predominantly carbon)

Dalmatian Stone

Peralkaline Quartz-Feldspar Rock with Arfvedsonite

Note: Item is not a geological specimen

n/a

Lapis Lazuli

Complex mixture of minerals, primarily Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2

Note on Image Identification: Textile

N/A (Anthropogenic material)

Ruby in Fuchsite

Corundum (Al2O3) in Fuchsite (K(Al,Cr)3Si3O10(OH)2)

Popcorn

Zea mays everta (P. Wilson) (Botanical name for the corn variety)

River Rock

Sedimentary Rock (various compositions)

Metal Alloy (Likely Pewter or Sterling Silver)

Not a natural geological specimen; composed of refined metals. If pewter, it's a tin-based alloy. If sterling silver, it's 92.5% silver and 7.5% other metals (usually copper).

Unknown Organic Object (likely a berry or fruit)

Not applicable; this is not a geological specimen. If it were a cranberry, its scientific name would be Vaccinium macrocarpon; if a cherry, it would be Prunus avium or Prunus cerasus.

Biological Bone (Patella/Knee)

Patella (part of the Human Skeletal System)

Not a rock, mineral, or geological specimen

Serpentine

Serpentinite (a rock composed primarily of serpentine minerals like antigorite, chrysotile, and lizardite; general formula (Mg, Fe)3Si2O5(OH)4)

Digital Multimeter (Synthetic Object)

Digital Multimeter (DMM)

Portable Ceramic Space Heater

Polished Acrylonitrile Butadiene Styrene (ABS) Plastic with Ceramic Heating Elements

Abbey Bominable (Monster High character)

Anthropomorphic Yeti / Digital Animation

Quartz (Druzy) in host rock

SiO₂ (Silicon Dioxide) as Quartz, with unspecified host rock components (likely silicates and iron oxides)

Schist

N/A (a rock type, not a mineral formula)

N/A - Non-Geological Item

Serpentinite

Serpentinite (a rock composed predominantly of serpentine group minerals)

Granite

Granite (a felsic intrusive igneous rock)

Anthropogenic Heat Source (Electronic/Industrial Interface)

Thermal IR emission (Electronic infrastructure)

Bauxite Ore

Hydrated aluminum oxides (e.g., Gibbsite Al(OH)3, Boehmite ̲̲̲̲AlOOH, Diaspore ̲̲̲̲AlOOH)

Pumice

Pumice (volcanic rock)

Grass (Organic Matter/Soil)

Poaceae (family of monocotyledonous flowering plants)

Gneiss

Gneiss (a rock type, not a specific mineral with a formula)

Pebble

Clast (specifically a granule or small pebble)

Man-made Synthetic Material (Not a rock or mineral)

Polyester (Polyethylene terephthalate) / Faux Fur

Granite

Granite (a common rock name, not a single mineral species, composed primarily of quartz, feldspar, and mica/amphibole)

Epidote (or Epidote-rich rock)

Epidote. Mineral formula: Ca2(Al,Fe)3(SiO4)3(OH).

Baltic Amber (Butterscotch or Egg Yolk Variety)

Succinite (chemical formula: C10H16O)

Mother of Pearl (Nacre)

Calcium Carbonate (primarily aragonite, with conchiolin)

Nephrite Jade

Nephrite

Shale

Fissile Mudstone (primarily composed of phyllosilicate minerals like kaolinite, montmorillonite, and illite)

Granite

Phaneritic plutonic rock (primarily Quartz, Feldspar, and Mica)

Sandstone

Quartz Sandstone (predominantly)

Man-made earbud charging case (Not a rock or mineral)

Acrylonitrile Butadiene Styrene (ABS) Plastic with electronic components

Veined Limestone (Micrite) with Quartz/Calcite Veins

Calcium Carbonate (CaCO3) with Silicate or Carbonate inclusions

Sandstone

Arenite (SiO2, often with CaCO3 or Fe2O3 cement)