Mixed

Polished/tumbled green jasper (probable serpentinized stone)

Jasper, microcrystalline quartz (SiO₂), possibly mixed with serpentine minerals

Raw metallic sulfide specimen, likely galena

Galena (lead sulfide, PbS), possibly mixed with sphalerite or chalcopyrite

Likely galena-bearing ore or metallic sulfide specimen

Probably galena (PbS), possibly mixed with pyrite or other sulfides

Cave (botryoidal) aragonite or calcite specimen

Aragonite (CaCO₃), possibly mixed with calcite and iron-oxide inclusions

Pyrite-bearing sulfide specimen

Pyrite (FeS₂), possibly mixed with chalcopyrite or other iron sulfides

Bauxite

Bauxite (Al(OH)3 mixed with Fe2O3 and clay minerals)

Unidentified weathered rock fragments

Likely mixed silicate rocks; specific identification requires testing

Ocean Jasper Mushroom

Orbicular Jasper (Silicon Dioxide, SiO2 mixed with various impurities)

Ironstone Concretion (Moqui Marble)

Iron Oxide Concretion (Fe2O3 / FeO(OH) mixed with SiO2)

River Rock (Glacial Cobbles)

Fluvial Alluvium (Mixed lithology including Quartzite, Basalt, and Granite)

Botryoidal limonite/goethite nodule

Limonite (largely goethite, FeO(OH), with hydrated iron oxides)

Greywacke (River Pebble)

Greywacke sandstone with quartz veining

Sodalite

Sodalite: Na8(Al6Si6O24)Cl2

Jasper and Basalt (Mixed Breccia or Chert)

Silicon Dioxide (SiO2) with Ferromagnesian silicates

Weathered polymictic conglomerate or breccia

Polymictic conglomerate/breccia, likely iron-stained and quartz-bearing

Jasper pebble (possibly Red Jasper or Lake Superior Agate/Jasper mix)

Silicon Dioxide (SiO2) with Hematite inclusions

Native copper-bearing rock

Native copper (Cu), likely with copper oxides/carbonates in a host rock

Banded agate and chalcedony rough

Microcrystalline quartz (SiO₂), chiefly chalcedony with agate banding; some pieces may include jasper or brecciated quartz

Raw lepidolite–quartz specimen (probable)

Lepidolite, K(Li,Al)3(Si,Al)4O10(F,OH)2, with quartz and possibly mica/petalite

Azurite-Malachite (often a mixed specimen)

Azurite: Cu3(CO3)2(OH)2; Malachite: Cu2(CO3)(OH)2. The specimen appears to be a natural mixture or intergrowth of these two minerals.

Jadeite and Mixed Gemstones (Ruby, Sapphire, Emerald)

Jadeite (NaAlSi2O6), Corundum (Al2O3), Beryl (Be3Al2(Si6O18))

Weathered sandstone or granitic rock fragment

Indeterminate siliciclastic rock; likely quartz–feldspar–mica aggregate

Amazonite (likely mixed with other feldspars/minerals)

Amazonite is a variety of Microcline, which is a tectosilicate mineral, formula KAISi3O8. The mixed beads could include other feldspars or quartz.

Mixed Chalcedony and Jasper Bracelet (possibly 'Ocean Jasper' or similar banded variety for brown beads, and blue/grey Chalcedony for the translucent beads)

Chalcedony (SiO2), Jasper (SiO2 with impurities)

Mixed Tumbled Gemstones (Agate, Aventurine, Pyrite, etc.)

Multiple (principally Silicon Dioxide SiO2 and Iron Disulfide FeS2)

Mixed collection of minerals and rocks (Jasper, Carnelian, Granite, and Quartz)

Silicon Dioxide (SiO2) with varying impurities for silicates and igneous aggregates

Chrysocolla (or Fuchsite / Serpentine Carving)

Hydrated copper phyllosilicate, Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (often associated with Malachite/Quartz)

Serpentinite (likely serpentinized ultramafic rock)

Serpentinite; chiefly serpentine-group minerals (antigorite, lizardite, chrysotile), with possible magnetite, olivine, pyroxene, and talc

Yellow-brown jasper or silicified volcanic rock

Microcrystalline quartz (chalcedony), SiO₂, likely jasper

Granite (Pink/Red Granite)

Phaneritic Felsic Igneous Rock

Red Jasper (in Quartz/Chalcedony)

Silicon Dioxide (SiO2) with iron oxide inclusions

Likely rough emerald-bearing rock

Emerald (green beryl, Be₃Al₂Si₆O₁₈) in a mineral matrix; exact identification is uncertain from the image

Quartz-rich rock fragments, likely granite or gneiss

Granite/gneiss assemblage; chiefly quartz (SiO₂), feldspar, and mica

Tiger’s eye

Quartz (SiO₂) with fibrous crocidolite pseudomorphs and iron oxides

Chrysocolla

Hydrated copper phyllosilicate, (Cu,Al)2H2Si2O5(OH)4·nH2O

Pyrite and Calcite (or Barite) Specimen

Iron Sulfide (FeS2) with Calcium Carbonate (CaCO3)

Fuchsite in Quartz

K(Al,Cr)2(AlSi3O10)(OH)2 in SiO2

Iron-rich rock fragment (likely limonite/goethite weathering material)

Hydrated iron oxides, chiefly goethite (α-FeO(OH)) and/or limonite (variable mixture)

Weathered volcanic rock, likely andesite

Porphyritic andesite (tentative; image alone cannot confirm composition)

Tumbled tiger’s-eye-rich metamorphic stone

Tiger’s eye: fibrous quartz (SiO₂), commonly intergrown with crocidolite pseudomorphs; possibly mixed with dark iron-rich matrix

Sodalite

Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2)

Polished red/brown agate bead bracelet

Microcrystalline quartz (chalcedony), SiO₂; likely carnelian/banded agate varieties