Undetermined

Fossilized bone or bone fragment

Indeterminate fossil bone; mineralized apatite (hydroxyapatite), commonly Ca₅(PO₄)₃(OH)

Fine-grained brown sand or weathered soil

Unconsolidated siliciclastic sediment, likely quartz-rich sand (SiO₂) mixed with iron-oxide-coated grains

Small brown rock fragment

Undetermined; possibly weathered iron-stained quartzite or chert

Possible iron-rich meteorite fragment

Undetermined; possibly an iron meteorite or stony-iron meteorite

Dark rock/mineral fragment

Undetermined; possibly magnetite-rich basalt or iron sulfide

Small dark mineral or rock fragment

Undetermined; possibly a dark mafic mineral such as biotite or magnetite

Tumbled yellow-brown stone, likely jasper or quartzite

Undetermined; possibly microcrystalline quartz (SiO₂) in jasper or quartzite

Iron-stained weathered stone (tentative)

Undetermined; possibly weathered iron-rich basalt or concretion

Fossilized wood or bone fragment

Indeterminate permineralized organic fossil; possibly silicified wood or fossil bone

Faceted blue gemstone ring, likely synthetic spinel or glass; identity uncertain

Possibly synthetic blue spinel (MgAl₂O₄) or laboratory sapphire (Al₂O₃); the clear side stones may be cubic zirconia or glass

Metallic meteorite fragment (probable stony-iron or iron meteorite)

Undetermined meteoritic Fe–Ni alloy with silicate minerals

Possible iron-rich stone or meteorite fragment

Undetermined; possibly magnetite-bearing rock or an ordinary chondrite

Likely metallic meteorite fragment

Undetermined; possibly an iron meteorite or stony-iron meteorite

Dark weathered igneous cobble, likely basalt

Basalt; fine-grained mafic rock composed chiefly of plagioclase and pyroxene, commonly with olivine

Undetermined Due to Blur (Possible Flesh-Tone Mineral)

Unknown (Insufficient Visual Clarity)

Iron-rich meteorite candidate

Undetermined; possible stony-iron or iron-oxide-rich meteorite

Dark weathered metamorphic rock, likely schist or phyllite

Undetermined; probably mica-rich quartz–feldspar schist/phyllite

Small dark metallic-looking rock fragment

Undetermined; possibly iron oxide-rich material or a metallic mineral

Likely polished dark stone or mineral specimen (unidentifiable from image)

Undetermined; possibly dark quartz-rich material, basalt, or obsidian

Likely metallic meteorite fragment

Undetermined iron or stony-iron meteorite; mineralogy requires testing

Possible iron-rich meteorite fragment

Undetermined; possible stony-iron or iron-oxide-rich meteorite

Possible meteorite fragment

Undetermined; likely an iron-rich meteorite or meteorite-like slag fragment

Likely polished dark stone (identity uncertain)

Undetermined; possibly polished basalt, chert, or another dark silicate rock

Iron-rich meteorite candidate

Undetermined stony-iron or iron meteorite; possible weathered iron meteorite

Likely metallic meteorite fragment

Undetermined iron meteorite, possibly an iron–nickel alloy (kamacite/taenite)

Iron-rich meteorite candidate

Undetermined Fe–Ni meteorite; possible ordinary chondrite or iron meteorite

Iron-rich meteorite candidate

Undetermined Fe–Ni meteorite, possibly an ordinary chondrite or iron meteorite

Black drusy mineral coating, possibly hematite or manganese oxide

Undetermined; likely microcrystalline hematite (Fe₂O₃) or manganese oxides such as pyrolusite (MnO₂)

Iron-rich meteorite candidate

Undetermined; possible stony-iron or iron meteorite, commonly kamacite–taenite alloy

Banded metamorphic rock, likely gneiss or banded amphibolite

Undetermined foliated metamorphic rock; commonly quartz–feldspar–biotite gneiss or amphibolite

Weathered iron-rich rock, possibly limonite-bearing basalt or ironstone

Undetermined; likely iron oxides/hydroxides (goethite–hematite–limonite) in a silicate host

Unknown brown-and-gold rock fragment

Undetermined; possibly iron-stained quartz, mica schist, or sulfide-bearing ore

Green faceted gemstone, likely synthetic glass or chrome-dyed stone

Undetermined; possibilities include green tourmaline, synthetic emerald, glass, or dyed quartz

Iron-rich brown stone, possibly weathered chert or ironstone

Undetermined; likely iron-oxide-bearing silica-rich rock (chert/ironstone)

Likely assorted beach/river pebbles

Undetermined mixed lithologies; visible pieces may include quartz-rich and volcanic rocks

Iron-rich meteorite candidate

Undetermined stony-iron or iron meteorite; mineralogy likely Fe–Ni metal with silicates

Weathered iron-rich rock, possibly basalt or limonite-bearing sandstone

Undetermined; likely Fe-oxide-stained basalt or ferruginous sandstone (hematite/goethite-bearing)

Iron-rich meteorite candidate

Undetermined meteoritic iron–nickel material; possibly an ordinary chondrite or weathered iron meteorite

Iron-rich meteorite candidate

Undetermined; possible stony-iron or iron meteorite, commonly kamacite–taenite (Fe–Ni)

Likely iron-rich meteorite fragment

Undetermined stony-iron or iron meteorite; mineralogy may include Fe–Ni metal, troilite, and silicates

Green cabochon ring stone (likely dyed jade, aventurine, or glass imitation)

Undetermined; possible nephrite jade (Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂), jadeite (NaAlSi₂O₆), or green aventurine quartz

Mixed rock and mineral specimen collection

Mostly undetermined from the photograph; apparent quartz-rich rocks, sandstone, granite/gneiss, and possibly iron-oxide-bearing specimens