Unknown

Red jasper (likely) bead bracelet

Jasper, an opaque variety of microcrystalline quartz; SiO₂

Pyrite-bearing schist

Likely pyrite (FeS₂) in a mica-rich schist; exact identification requires testing

Green tumbled stone, possibly serpentine

Undetermined; appearance is consistent with serpentine-rich rock (serpentinite), but the image alone cannot confirm identification.

Rounded river pebble, likely basaltic rock

Fine-grained mafic igneous rock, probably basalt or andesite; exact identification requires testing

Unidentified pale pink rough mineral specimen

Possibly rose quartz or feldspar; identification is uncertain from the photograph

Tumbled greenstone (likely serpentinite or chlorite-rich metamorphic rock)

Serpentinite, commonly dominated by serpentine-group minerals; exact identification requires testing

Uncertain greenish stone, possibly serpentine or altered basalt

Serpentine-group minerals, commonly Mg₃Si₂O₅(OH)₄; identification is provisional from the photograph

Rough garnet-bearing rock, likely garnet-mica schist

Garnet (commonly almandine, Fe₃Al₂(SiO₄)₃) in a mica- and quartz-rich metamorphic matrix; exact identification is uncertain from the photo

Red sandstone

Iron-oxide-stained quartz sandstone; exact mineral composition cannot be confirmed from the image

Ironstone (iron-rich sandstone or concretion)

Ferruginous sandstone, cemented by iron oxides/hydroxides such as hematite (Fe₂O₃) and goethite (FeO(OH))

Likely biotite-rich mica schist

Mica schist, composed mainly of biotite and quartz, possibly with feldspar

Rounded ironstone concretion

Iron-rich sedimentary concretion, commonly composed of goethite and/or hematite cementing sand or clay

Green-and-white terrazzo (likely serpentine/marble aggregate)

Composite decorative stone; probable serpentinite (Mg₃Si₂O₅(OH)₄) with white calcite marble fragments in cementitious matrix

Tumbled dark green stone, likely serpentine

Serpentinite; chiefly serpentine-group minerals (Mg₃Si₂O₅(OH)₄)

Quartz crystal cluster

Quartz (SiO₂), likely milky to pale honey-colored macrocrystalline quartz

Polished banded jasper (likely red-and-gray jasper)

Microcrystalline quartz (SiO₂), commonly termed jasper; exact variety cannot be confirmed from the photo

Small metallic mineral fragment, possibly galena or slag-like sulfide

Tentatively galena (PbS), but identification is uncertain from the image

Green serpentine (likely serpentinite)

Serpentine-group minerals, commonly antigorite, lizardite, and/or chrysotile; rock name: serpentinite

Likely dark mineral-bearing rock fragments

Indeterminate from the photograph; possibly amphibolite or another dark, silicate-rich rock

Yellow serpentine (likely serpentine-rich rock)

Serpentinite; chiefly serpentine-group minerals, such as antigorite, lizardite, and chrysotile

White pebble, possibly milky quartz

Unidentified white pebble; milky quartz (SiO₂) is a possible identification

Green-brown metamorphic rock, possibly serpentinite

Serpentinite, chiefly serpentine-group minerals (Mg₃Si₂O₅(OH)₄), with possible magnetite, chlorite, or carbonate

Blue-green tumbled mineral specimen

Indeterminate; possibly chrysocolla, turquoise, or azurite–malachite material

Unidentified dark green rock, possibly serpentinite

Serpentinite; chiefly serpentine-group minerals (Mg₃Si₂O₅(OH)₄), identification uncertain from the blurred image

Unknown dark mineral/rock fragment

Indeterminate; possibly a dark sulfide mineral or slag-like geological fragment

Orange halite (rock salt)

Halite, sodium chloride (NaCl)

Tiger’s-eye ring

Tiger’s-eye, a quartz-rich pseudomorph of fibrous crocidolite; SiO₂

Likely garnet-bearing rock (possibly almandine garnet in matrix)

Garnet, likely almandine (Fe₃Al₂Si₃O₁₂); host rock cannot be determined from the image

Likely mica-rich schist

Mica schist, probably muscovite/biotite-bearing quartz schist

Quartz geode slice

Microcrystalline and crystalline quartz, silicon dioxide (SiO₂)

Brecciated jasper

Jasper, an opaque microcrystalline variety of quartz (SiO₂), with iron-oxide staining

Likely rough rose quartz

Quartz, SiO₂ (trigonal crystal structure)

Likely botryoidal calcite or aragonite specimen

Calcite (CaCO₃), possibly aragonite (CaCO₃)

Green serpentine-rich stone

Serpentine-group minerals, chiefly antigorite/lizardite; possibly nephrite or chlorite-bearing rock

Tumbled serpentine (likely)

Serpentine-group minerals, chiefly antigorite, lizardite, or chrysotile; approximate formula Mg₃Si₂O₅(OH)₄

Serpentine (polished serpentinite)

Serpentinite; chiefly serpentine-group minerals, Mg₃Si₂O₅(OH)₄

Unknown dark mineral fragment

Indeterminate; possibly a dark silicate mineral or slag-like geological fragment

Polished serpentine (likely bowenite/antigorite)

Serpentine-group minerals, chiefly antigorite or lizardite: Mg₃Si₂O₅(OH)₄

Polished yellow-green serpentine pendant

Serpentine-group minerals, chiefly antigorite and/or lizardite; approximate formula Mg3Si2O5(OH)4

Greenstone / serpentine-rich metamorphic rock

Likely serpentinite, composed mainly of serpentine-group minerals (antigorite, lizardite, or chrysotile), with possible magnetite and chlorite

Weathered river pebble, likely quartzite

Quartzite (predominantly interlocking quartz, SiO₂); identification is tentative from the photo

Iron-stained quartzite cobble (possibly hematitic quartzite)

Quartzite, composed chiefly of quartz (SiO₂), with iron oxides such as hematite (Fe₂O₃) staining or cementing it