Unknown (Likely Sedimentary Or Metamorphic)

Banded gneiss

Foliated gneiss, likely quartz–feldspar–biotite or amphibole gneiss

Rough amber-colored quartz or calcite fragment

Likely quartz (SiO₂) or calcite (CaCO₃); exact identification requires testing

Likely quartz-bearing rock fragment

Quartz (SiO₂), possibly with iron-oxide staining or other mineral inclusions

Unidentified pale yellow-green mineral/rock fragment

Possibly sulfur-bearing mineral, serpentine, or weathered limestone; exact identification requires testing

Likely biotite-bearing schist

Mica schist, probably biotite-rich; exact identification is uncertain from the photo

Quartzite Cobble

Metamorphic Quartzite (SiO2)

Native Silver Nugget

Silver (Ag)

Tumbled hematite (likely hematite-rich ironstone)

Hematite, Fe₂O₃; possibly mixed with magnetite or goethite

Banded gneiss

Foliated gneiss, likely quartz–feldspar–mica gneiss

Brown-orange quartz pebble, possibly iron-stained quartzite

Quartz (SiO₂); exact identification is uncertain from the photograph

Small translucent brown pebble, likely quartz or chalcedony

Quartz (SiO₂), possibly microcrystalline quartz (chalcedony)

Quartz Pebble

Silicon Dioxide (SiO2)

Pyrite-bearing rock (likely pyrite in a quartz-rich matrix)

Pyrite (FeS₂), with a light-colored quartz-rich host; exact host rock is unclear from the image

Banded gneissic rock

Gneiss, likely quartz–feldspar–biotite gneiss

Yellow Calcite

Calcium Carbonate (CaCO3)

Gneiss

Feldspar–quartz–mica gneiss, locally amphibole-bearing

River Quartzite Siltstone

Quartz-rich Meta-siltstone (SiO2 dominated)

Weathered dark stone, possibly basalt

Basalt; commonly plagioclase feldspar, pyroxene, and minor olivine

Red Jasper

Jasper (Silicon Dioxide Si₂O₃)

Small quartz-rich pebble or rock fragment

Quartz (silicon dioxide, SiO₂), possibly with iron-oxide staining or host-rock inclusions

Mica-rich schist

Mica schist, likely muscovite–biotite schist with quartz

Likely biotite-rich schist

Mica schist, probably containing biotite and quartz (exact identification requires testing)

Likely quartz-rich stone (possibly milky quartz or quartzite)

Quartz, silicon dioxide (SiO₂), or quartzite if interlocking grains are present

Halite

Halite (Sodium Chloride, NaCl)

Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Feldspar (specifically Orthoclase or Plagioclase)

Potassium Aluminum Silicate (KAlSi3O8) or Sodium/Calcium Aluminum Silicate

Small iron-rich pebble, possibly hematite or ironstone

Indeterminate from the image; possible hematite (α‑Fe₂O₃) or goethite (α‑FeO(OH))

Botryoidal quartz on matrix

Quartz, SiO₂, with possible iron-oxide-stained host rock

Possible fossilized tooth or bone fragment

Unidentified fossil; the image is too blurred for a reliable taxonomic identification

Natural freshwater pearls

Pearl (nacreous calcium carbonate; chiefly aragonite, CaCO₃)

Slate

Slate; fine-grained metamorphosed shale, commonly quartz–muscovite/chlorite rich

Garnet-Mica Schist

Garnetiferous Porphyroblastic Schist

Tumbled blue stone and polished red-brown stone

Likely sodalite or blue aventurine; red specimen possibly jasper or polished flint/chert

Gneiss (specifically Granitic Gneiss)

Gneissic Metamorphic Rock

Polished brown agate/chalcedony nodule

Microcrystalline quartz (SiO₂), likely brecciated or weathered agate with possible carbonate/iron-oxide inclusions

Garnet-bearing metamorphic rock, likely garnet schist or amphibolite

Almandine garnet (Fe₃Al₂Si₃O₁₂) in mica- or amphibole-rich matrix

Milky Quartz with Iron Inclusions

Quartz (Silicon Dioxide, SiO2)

Likely mica-bearing metamorphic rock (possibly schist)

Mica schist, composed mainly of quartz and mica (muscovite and/or biotite); identification is approximate from the image

Weathered gneiss (likely)

Felsic banded gneiss, composed mainly of quartz and feldspar with mica

Pale green calcite

Calcite (CaCO₃)

Green Aventurine

Silicon dioxide (SiO2) with fuchsite inclusions

Likely mica-rich schist

Mica schist, composed mainly of muscovite and/or biotite with quartz; exact identification is uncertain from the photo.