Mineral (Man Modified)

Iron-rich sandstone or laterite

Ferruginous sandstone; mainly quartz (SiO₂) cemented or stained by iron oxides such as hematite (Fe₂O₃) and goethite (FeO(OH))

Turquoise

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

Fluorite

Calcium Fluoride (CaF2)

Yellow Fluorite

Calcium fluoride (CaF2)

Potassium Feldspar

Orthoclase (KAlSi3O8)

Smoky Quartz Cluster

Silicon Dioxide (SiO2)

Amethyst cluster

Quartz, silicon dioxide (SiO₂), purple variety colored mainly by iron impurities and irradiation

Quartz (likely milky/rose quartz variety)

Quartz (SiO2 - Silicon Dioxide)

Likely polished garnet

Garnet group; probably almandine, iron-aluminum silicate (Fe₃Al₂Si₃O₁₂)

Possible weathered iron-rich rock or slag fragment

Indeterminate; likely limonite/goethite-bearing material, possibly iron slag

Sandstone (Graywacke)

Clastic Sedimentary Rock (Lithic Sandstone)

Fluorite (Rainbow/Purple Fluorite)

Calcium Fluoride (CaF2)

Prehnite

Prehnite (Ca2Al2Si3O10(OH)2)

Polished agate/chalcedony slab

Microcrystalline quartz (SiO₂), chiefly chalcedony with iron-oxide inclusions

Limonite / Brown Iron Ore

Hydrous Iron Oxide (FeO(OH)·nH2O)

Limonite with Iron Inclusions

Limonite (Hydrated Iron Oxide, FeO(OH)·nH2O)

Petrified Wood

Silicified Wood (SiO2)

Uncertain polymict breccia or altered volcanic rock

Likely hydrothermally altered volcanic breccia; exact mineral identification requires testing

Polished ocean jasper / orbicular jasper (probable)

Silica-rich chalcedony (microcrystalline quartz, SiO₂) with iron oxides and altered volcanic inclusions

Green Fluorite

Fluorite (Calcium Fluoride, CaF2)

Fluorite

Calcium Fluoride (CaF2)

Likely weathered gneiss or mica-rich schist

Foliated metamorphic rock, probably quartz–feldspar–biotite gneiss/schist

Iron-rich botryoidal limonite/goethite specimen

Limonite (amorphous hydrated iron oxides, chiefly goethite, α-FeO(OH))

Banded gneiss pebble

Foliated gneiss, typically quartz–feldspar–mica bearing

Sand Dollar (Fossilized or Calcium Carbonate Skeleton)

Clypeasteroida (Order)

Echinoid Fossil (Sea Urchin)

Echinoidea (specifically likely Schizaster or similar genus), calcium carbonate (CaCO3)

Green Fluorite

Calcium Fluoride (CaF2)

Fluorite in Matrix

Calcium Fluoride (CaF2) with Quartz/Calcite matrix

Quartz with Matrix

Silicon Dioxide (SiO2)

Potassium Feldspar

Orthoclase (KAlSi3O8)

Quartz (Milky/Chalcedony variety)

Silicon Dioxide (SiO2)

Cream Quartz Bead

Silicon Dioxide (SiO2)

Olivine (Peridot)

Olivine Group (Mg,Fe)2SiO4

Red Hematite

Iron(III) oxide (Fe2O3)

Fluorite

Fluoride (Calcium Fluoride - CaF2)

Pegmatitic Granite

Granite (composed of Quartz, Feldspar, and Mica)

Quartz crystal cluster

Quartz (silicon dioxide, SiO₂)

Milky Quartz

Silicon Dioxide (SiO2)

Polished orbicular jasper (likely ocean jasper or leopard jasper)

Microcrystalline quartz (SiO₂) with iron-oxide pigments and altered volcanic inclusions

Milky quartz (quartz-rich rock fragment)

Quartz, silicon dioxide (SiO₂)

Botryoidal Quartz or Chalcedony

Silicon Dioxide (SiO2)

Fossilized Shark Tooth or Bone Fragment

Vertebrate Fossil (likely Carcharodon or similar genus)