Mineralogical

Dark gray fine-grained rock, likely basalt

Basalt; chiefly plagioclase feldspar and pyroxene, often with minor olivine and magnetite

Weathered iron-rich rock (probable laterite or limonite-bearing stone)

Goethite–limonite mixture, commonly written FeO(OH)·nH₂O, with possible quartz and clay minerals

Biotite-rich schist

Mica schist; predominantly biotite mica with quartz and feldspar

Tumbled yellow-green stone, likely serpentine

Serpentine-group minerals, commonly antigorite/lizardite (Mg₃Si₂O₅(OH)₄)

Gossan with Copper Carbonate (Chrysocolla/Malachite)

Ferruginous Oxide (Gossan) with Cu2CO3(OH)2 (Malachite) or (Cu,Al)2H2Si2O5(OH)4 (Chrysocolla)

Rounded greenstone cobble

Likely greenschist or altered basalt; composition commonly chlorite, epidote, actinolite, albite, and quartz

Tumbled green-brown stone, likely serpentine

Serpentinite; chiefly serpentine-group minerals (antigorite, lizardite, chrysotile), commonly with magnetite

Tumbled greenstone (probable serpentinite)

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

Tiny rounded brown mineral grain

Indeterminate; possibly iron oxide, garnet, or a weathered sulfide grain

Veined metamorphic cobble, likely serpentinite

Serpentinite, commonly dominated by antigorite/lizardite with magnetite and cross-cutting quartz or calcite veins

Blue-gray tumbled stone, likely labradorite or blue-gray feldspar

Plagioclase feldspar, possibly labradorite (NaAlSi₃O₈–CaAl₂Si₂O₈)

Iron-rich laterite or weathered ironstone pebble

Goethite–hematite-rich ferruginous duricrust; commonly approximated as FeO(OH) and Fe₂O₃

Small rounded pebble

Indeterminate lithic clast; likely weathered quartzite, sandstone, or chert

Banded amphibolite (hornblende-rich metamorphic rock)

Amphibolite; predominantly hornblende ± plagioclase, with possible biotite and quartz

Polished green-inclusion stone, likely chlorite-included quartz

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

Rounded river pebble (likely weathered granite or metamorphic rock)

Indeterminate; possible granitic or quartz-rich lithology

Chalcopyrite

Copper Iron Sulfide (CuFeS2)

Schist (likely Mica Schist)

Mica Schist

Brown chert or flint pebble

Microcrystalline quartz (SiO₂), commonly with chalcedony and iron-oxide staining

Osumilite in Granite Matrix

(K,Na)(Fe,Mg)2(Al,Fe)3(Si,Al)12O30

Banded Gneiss (with Quartz Vein)

Gneiss (Metamorphic rock of varying mineralogy)

Granite

Granite (Phaneritic igneous rock)

Granite

Phaneritic Igneous Rock (composed primarily of Quartz SiO2, Alkali Feldspar, and Plagioclase)

Greenstone (Metabalt)

Chlorite-actinolite schist (Greenstone)

Eclogite

Eclogite (Omphacite-Garnet rock)

Granite

Phaneritic Felsic Igneous Rock

Granite

Phaneritic Felsic Igneous Rock

Granite

Phaneritic Felsic Igneous Rock

Mixed River Pebbles

Clastic Sedimentary Alluvial Deposit / Polymictic Conglomerate Clasts

Raw green calcite (likely)

Calcite, calcium carbonate (CaCO₃)

Sandstone

Clastic sedimentary rock (primarily SiO2)

Yellow-green aventurine or serpentine pendant

Most likely serpentine-group mineral (magnesium silicate), possibly quartz-rich aventurine

Tumbled gray stone, likely serpentinite or weathered basalt

Tentatively serpentinite (predominantly serpentine-group minerals); identification is uncertain from the photograph

Serpentine-rich greenstone (probable serpentine/soapstone fragment)

Serpentine-group minerals, chiefly antigorite/lizardite; possibly minor talc, chlorite, and carbonate

Tumbled green aventurine (likely)

Quartzite dominated by quartz (SiO₂), with green fuchsite mica inclusions

Polished labradorite

Labradorite, calcium-rich plagioclase feldspar; approximately (Ca,Na)(Al,Si)₄O₈

Polished serpentinite pebble

Serpentinite; primarily serpentine-group minerals (Mg3Si2O5(OH)4), with possible magnetite and talc

Polished pink-and-green feldspar-bearing rock, likely unakite or aventurine granite

Unakite-like epidote–feldspar–quartz aggregate; composition commonly K-feldspar + quartz + epidote

Serpentinite (probable)

Serpentinite, dominated by serpentine-group minerals (Mg₃Si₂O₅(OH)₄), with dark magnetite or chromite and pale carbonate/talc possible

Dragon Blood Jasper

Quartz (SiO2) with Epidote and Piedmontite inclusions

Tumbled brown chert or flint

Microcrystalline quartz (SiO₂), commonly with chalcedony

Painted Garden Rock

Coated Siltstone or Mudstone