Igneous, Metamorphic, And Sedimentary (Mixed Assemblage)

Likely milky quartz

Quartz (silicon dioxide, SiO₂)

Clear quartz crystal pendant

Quartz (silicon dioxide, SiO₂)

Assorted rock and mineral specimens

Multiple unidentified specimens; individual mineral and rock names cannot be determined from this image

Ruby zoisite (anyolite) beads

Ruby-bearing zoisite; zoisite Ca₂Al₃(SiO₄)₃(OH), with corundum ruby Al₂O₃

Pink Granite

Granite (Felsic Plutonic Rock)

Pegmatitic granite with dark mafic band

Granitic pegmatite; quartz–feldspar–mica assemblage, with biotite/amphibole-rich mafic material

Unidentified polished stone fragments

Indeterminate; likely mixed lapidary specimens, possibly jasper, agate, or quartz-bearing rock

Blue Apatite

Apatite (Group), Ca5(PO4)3(F,Cl,OH)

Likely amphibolite

Amphibolite, composed chiefly of hornblende and plagioclase

Weathered metallic sulfide-bearing rock, possibly schist or gneiss

Indeterminate; likely mica-rich metamorphic rock with iron sulfides or magnetite

Tumbled unakite

Unakite: epidote, pink potassium feldspar (orthoclase), and commonly quartz

Mixed Mineral Collection (Quartz, Amethyst, Rose Quartz, Pyrite, etc.)

Mixed Silicates and Sulfides (SiO2, FeS2)

Quartz in Greenstone

Metamorphic rock with quartz vein (SiO2 / mixed silicates)

Soil with Mineral Detritus and Quartz Fragments

Regolith / Silicate Mineral Aggregate

Weathered volcanic rock, likely altered basalt

Basaltic rock, probably chlorite–epidote–iron-oxide altered basalt

Mixed Mineral Collection

Multiple Mineral Species (Silicates and Oxides)

Mahogany Obsidian

Volcanic Glass with Hematite/Magnetite inclusions (SiO2 + Fe2O3)

Magnetite-rich black sand

Magnetite (Fe₃O₄), likely mixed with other heavy minerals

Lapis Lazuli

Lapis Lazuli (Rock containing lazurite, calcite, and pyrite)

Unidentified gravel and stone fragments

Mixed, indeterminate lithologies; likely quartz, feldspar, and weathered silicate rock fragments

Sodalite

Sodalite (Na8Al6Si6O24Cl2)

Polished ruby-in-fuchsite (probable)

Corundum (Al₂O₃) with green fuchsite mica (Cr-muscovite), possibly zoisite/amphibole

Conglomeratic sandstone or breccia specimen

Quartz-rich clastic sedimentary rock; likely sandstone with pebble-sized quartz, feldspar, and lithic clasts

Mixed tumbled gravel and quartz-rich sandstone

Primarily quartz (SiO₂), feldspar, and lithic sedimentary fragments; one piece appears to be quartz-rich sandstone

Clear Quartz

SiO2 (Silicon Dioxide)

Unakite

Epidotized Granite

Unakite

Unakite (Epidotized Granite)

Crushed Stone (Gravel/Aggregates)

Crushed rock aggregate (varied composition including Granite, Limestone, and Quartz)

Quartz Vein in Greenstone

Metamorphic rock with quartz vein (SiO2 / mixed silicates)

Black Tourmaline (Schorl)

NaFe3Al6(BO3)3Si6O18(OH)4

Quartz

Silicon Dioxide (SiO2)

Sodalite

Na4Al3(SiO4)3Cl (Sodium Aluminum Silicate Chloride)

Chert Arrowhead

Microcrystalline Quartz (SiO2)

Unakite

Unakite (Epidotized Granite)

Mica-rich pegmatite

Granitic pegmatite, likely quartz–feldspar–mica assemblage

Granite-like rock fragment

Likely granitic aggregate; quartz–feldspar–mica assemblage

Quartz

Silicon Dioxide (SiO2)

Pink Granite

Phaneritic Felsic Intrusive Igneous Rock

Polished Jasper Cabochons

Microcrystalline quartz (SiO2)

Apatite

Calcium phosphate fluorapatite, Ca5(PO4)3(F,Cl,OH)

Yellow Apatite

Fluorapatite (Ca5(PO4)3(F,Cl,OH))

Mixed sedimentary rock and mineral specimens

Predominantly limestone, chert, sandstone, and iron-oxide-bearing clasts; exact identification requires testing