Mineral (Native Element Alloy)

Red Jasper

Silicon Dioxide (SiO2) with Hematite impurities

Limonite (with Goethite/Hematite glaze)

Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)

Blue Sapphire Crystal (Rough)

Corundum (Aluminum Oxide, Al2O3)

Limonite

FeO(OH)·nH2O

Bornite

Bornite (Cu5FeS4)

Likely metallic sulfide mineral fragment

Possibly galena (PbS) or pyrite (FeS₂); identification is uncertain from the photograph

Quartz (River Pebble)

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Diorite (possibly fine-grained variety or a related intermediate intrusive rock like a felsic gabbro or a dark granodiorite)

Diorite (Igneous rock, intrusive, intermediate composition)

Agate Slice (Carnelian Agate)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Chrysocolla

Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O)

Beryl (likely Pink/Morganite variety)

Beryllium aluminum silicate (Be3Al2Si6O18)

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

Azurite Malachite

Azurite (Cu3(CO3)2(OH)2) and Malachite (Cu2CO3(OH)2)

Amethyst

Quartz (Silicon Dioxide, SiO2)

Milky Quartz with Iron Inclusions

Silicon Dioxide (SiO2)

Jasper with Quartz Vein

Silicon Dioxide (SiO2)

Yellow Ochre (Limonite)

Limonite (FeO(OH)qnH2O)

Botryoidal Smithsonite

Smithsonite (Zinc Carbonate, ZnCO3)

Sandstone with Iron Staining

Arenite (SiO2 with Fe2O3)

Blue and White Quartz

Crystalline Silicon Dioxide with inclusions (SiO2)

Rhodochrosite

Manganese Carbonate (MnCO3)

Quartz on Sandstone

Silicon Dioxide (SiO2) in Lithic Sandstone

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

Turquoise

Turquoise (CuAl6(PO4)4(OH)8·4H2O)

Rhodonite

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

Turquoise

Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]

Kaolinite (Chalky Clay)

Kaolinite (Al2Si2O5(OH)4)

Chrysocolla and Azurite in Matrix

Hydrated copper phyllosilicate (Chrysocolla - Cu2H2Si2O5(OH)4) and Copper carbonate (Azurite - Cu3(CO3)2(OH)2)

Limonite (Iron Ore)

Goethite and related iron hydroxides (FeO(OH)·nH2O)

Mixed rock and mineral specimen collection

Multiple species, likely quartz (SiO₂), calcite (CaCO₃), feldspar, chert, and assorted volcanic/sedimentary rocks

Mixed rock and mineral collection

Multiple specimens; visible pieces may include quartz, calcite, agate/chalcedony, jasper, and dyed or coated materials

Banded calcite/aragonite mineral specimen (tentative)

Calcite (CaCO₃), possibly with aragonite or crystalline carbonate growth

Tumbled Mineral Collection (Amethyst, Celestite, K2 Jasper, Rose Quartz, Ruby in Zoisite, Que Sera Stone)

Mixed Mineral Specimens (Quartz SiO2, Celestite SrSO4, Corundum Al2O3 with Zoisite, etc.)

Unidentified Dark Mineral or Rock

Indeterminate (Likely Silicon Dioxide or Carbon-based)

Mixed Tumbled Rocks and Minerals Collection

Mixed Minerals and Rocks (Quartz, Feldspar, Jasper, Agate, Lapis Lazuli, Sodalite, Rose Quartz, Fluorite, etc.)

Mixed Rock and Mineral Collection

Mixed Assemblage (includes Quartz, Jasper, Feldspar, and Turquoise-colored stones)

Mixed Gemstone and Mineral Collection

Silicon Dioxide (SiO2) based minerals and others

Amethyst

Silicon Dioxide (SiO2) with trace Iron (Fe3+)

Granitic Pegmatite

Granitic Pegmatite (principally Quartz, Potassium Feldspar, and Mica)

Green Fluorite

Calcium Fluoride (CaF2)

Bauxite

Bauxite (mixture of hydrous aluminum oxides: Al(OH)3 & AlO(OH))