Anthropogenic (Man Made Material Processed By Nature)

Tiger's Eye

Tiger's Eye (a variety of Quartz, SiO₂)

Quartz

Quartz (SiO₂ - Silicon Dioxide)

Quartz

Quartz (SiO₂)

Shale or Mudstone (Based on appearance)

Shale (fine-grained, laminated fissile sedimentary rock) / Mudstone (fine-grained, non-fissile sedimentary rock)

Sandstone (Pebble/Conglomerate fragment)

Sandstone (clastic sedimentary rock)

Serpentine

Serpentinite (rock), Serpentine group minerals (e.g., Antigorite, Lizardite, Chrysotile)

Fluorite

Fluorite (Calcium Fluoride, CaF2)

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (in matrix)

Quartz (SiO₂)

Petrified Wood

Silicified wood (Quartz/Chalcedony)

Biotite Mica

K(Mg,Fe2+)3(Al,Fe3+)Si3O10(OH,F)2

Hematite

Hematite (Fe2O3)

Turquoise (beads)

Turquoise; CuAl6(PO4)4(OH)8·4H2O

Orbicular Jasper

Silicon Dioxide (SiO2), variety of Chalcedony

Sandstone

Arenite or Sandstone

Fossil Coral

Coral Limestone (a type of biogenic sedimentary rock)

Turquoise

Turquoise (CuAl6(PO4)4(OH)8·4H2O)

Basalt

Basalt

Peridot

Olivine (specific variety: gem-quality forsterite), (Mg,Fe)2SiO4

Clear Quartz (or Rock Crystal)

Quartz (SiO₂)

Obsidian (likely Golden Sheen Obsidian or Rainbow Obsidian, given the subtle sheen visible on some beads)

Obsidian (volcanic glass, predominantly SiO2 with various impurities)

Granite (weathered/river-tumbled)

Granite (Plutonic Igneous Rock)

Greisen (Quartz-Muscovite-Turretine Rock)

Greisen

Fossilized Wood (Petrified Wood)

Silicified Wood (primarily quartz/chalcedony replacing organic matter)

Magnetic Hematite

Magnetized Hematite (an iron oxide mineral, Fe2O3, that has undergone magnetization)

Amber

Fossilized Tree Resin (Amorphous Hydrocarbon)

Unakite

Epidote-Feldspar rock

Pebble or Cobble (likely composed of sandstone or conglomerate)

Clastic Sedimentary Rock (specific name like sandstone, conglomerate, or breccia would require microscopic analysis of clast size and angularity)

Quartzite

Quartzite (primarily SiO2)

Amber (Black)

Amber (succinite, retinite, etc., specifically, heavily included/dark varieties)

Banded Gneiss (River Rock/Pebble)

Gneiss (specifically a banded variety, likely a orthogneiss or paragneiss depending on parent rock)

Chert (varieties: Flint or Chalcedony)

Microcrystalline Quartz (SiO2)

Granite Pebble

Granite (a plutonic igneous rock composed primarily of quartz, feldspar, and mica/amphibole)

Amber

(C10H16O)n – an amorphous organic substance, primarily composed of polymerized isoprenoids.

Schist

Schist (various mineral compositions)

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.

Quartz

Quartz (SiO2 - Silicon Dioxide)

Peridot (Olivine)

Olivine ((Mg,Fe)2SiO4)

Dog (Sleeping)

Canis familiaris (or Canis lupus familiaris)

Agate (or Banded Agate)

Agate (a variety of Chalcedony, which is a cryptocrystalline form of Quartz); Chemical Formula: SiO₂ (Silicon Dioxide)

Jade

Jadeite or Nephrite

Amethyst Geode/Cluster

Quartz (SiO2) - variety Amethyst