Sedimentary And Igneous (Mixed)

Jasper and Mixed River Pebbles

Microcrystalline Quartz (Chalcedony / Jasper)

Mixed River Pebbles and Jasper

Siliciclastic sediment and microcrystalline quartz

River Cobble (Mixed Lithology)

Clastic Sedimentary Rock (Silicified Siltstone or Wacke)

River Rock (Glacial Cobbles)

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

Tumbled Carnelian and Quartz Mix

Silicon Dioxide (SiO2) with iron oxide impurities

Chakra Stone Bracelet

Mixed Mineral Assembly (Scoria, Amethyst, Lapis Lazuli, Turquoise/Howlite, Impression Jasper, Tiger's Eye, Carnelian, Red Jasper)

Black Tourmaline

Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)

Greywacke (River Pebble)

Greywacke sandstone with quartz veining

Mixed Gemstone Beaded Jewelry

Various minerals (e.g., Quartz varieties like Rose Quartz, Amethyst; Peridot; Garnet; etc.)

Mixed river pebbles and quartz-rich specimens

Polymictic fluvial gravel; likely quartz, quartzite, chert, and weathered feldspathic rocks

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Concrete with Exposed Aggregate

Anthropogenic conglomerate (Concrete)

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 River Pebbles and Rock Collection

Polymictic lithic conglomerate, sandstone, and quartz pebbles

Mixed River Pebbles (Jasper, Hematite, and Quartzites)

Silicon dioxide (Jasper/Quartz) and Iron oxide (Hematite)

Garnet (likely Almandine, Pyrope, or a blend)

Garnet group minerals: X3Y2(SiO4)3, where X and Y represent various metal ions (e.g., Almandine: Fe3Al2(SiO4)3, Pyrope: Mg3Al2(SiO4)3)

Pyrite and Calcite (or Barite) Specimen

Iron Sulfide (FeS2) with Calcium Carbonate (CaCO3)

Weathered quartzite cobble

Quartzite, predominantly crystalline SiO₂

Epidosite (Epidote-rich rock)

Epidosite (consisting primarily of Epidote: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH))

Granite

Granite (composed of quartz, potassium feldspar, plagioclase, and mica/biotite)

Metallic sulfide mineral specimen, likely pyrite

Pyrite (FeS₂), possibly a pyrite-rich sulfide aggregate

Lapis Lazuli

Lapis Lazuli (a rock composed primarily of Lazurite)

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

Silicon Dioxide (SiO2) with Hematite inclusions

Red Jasper (in Quartz/Chalcedony)

Silicon Dioxide (SiO2) with iron oxide inclusions

Black Tourmaline

Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)

Granite Pebble with Quartz/Feldspar Vein

Intrusive Felsic Igneous Rock (Granite)

Mixed Tumbled Stones Collection

Mixed Silicates and Carbonates (Quartz, Amorphous Silica, Carbonates)

Mixed Quartz and Jasper Pebbles

Silicon Dioxide (SiO2)

Pumice

Vesicular volcanic glass (Amorphous silica mixed with various oxides)

Mixed Mineral and Fossil Collection

Multi-specimen assemblage (SiO2, CaCO3, FeS2, etc.)

Tumbled hematite (likely hematite-rich ironstone)

Hematite, Fe₂O₃; possibly mixed with magnetite or goethite

River Pebbles and Cobbles

Mixed Siliciclastic Sediments (Quartzite, Chert, and Sandstone clasts)

Banded Iron Formation (BIF) / Iron Ore

Hematite-Magnetite BIF (Fe2O3 / Fe3O4 mixed with SiO2)

Limonite (Iron Ore/Sandstone mixture)

Limonite (FeO(OH)·nH2O) often mixed with Goethite and sedimentary matrix

Concrete

Anthropogenic Sedimentary Conglomerate (Cement mixture: typically Ca2SiO4, Ca3SiO5, Ca3Al2O6)

Black Tourmaline (Schorl)

NaFe3Al6(BO3)3Si6O18(OH)4

Inukshuk Rock Sculpture (composed of Granite, Slate, and Amethyst)

Silicon Dioxide (Amethyst portion, SiO2) with mixed silicate rock assemblage

Sodalite

Sodalite (Na8Al6Si6O24Cl2)

River Pebbles (Mixed Lithology)

Conglomerate clasts (Silica-rich and Metamorphic assemblages)

Pegmatite

Igneous Pegmatite (felsic intrusive rock)

Chalcopyrite

Copper Iron Sulfide (CuFeS2)

Porphyritic Igneous Rock / Porphyry

Porphyry (Plagioclase/Quartz phenocrysts in a finer-grained groundmass)