Anthropogenic (Man Made Product Subject To Geological Processes)

Aura Quartz (Rainbow Quartz)

Silicon Dioxide (SiO2) with metallic vapor coatings

Ironstone (iron-oxide-rich rock)

Ferruginous ironstone, likely limonite/goethite-rich; exact identification requires testing

Phyllite (possibly low-grade greenish slate)

Foliated metamorphic rock composed mainly of very fine-grained quartz, mica, and chlorite; approximate composition varies and has no single fixed chemical formula

Likely hematite-rich ironstone fragment

Hematite (α-Fe₂O₃), possibly with other iron oxides

Quartz

Quartz (SiO2 - Silicon Dioxide)

Concrete or asphalt-like aggregate surface with a dark fragment

Uncertain; likely artificial concrete containing mixed lithic aggregate, not a natural rock

Goldstone and pink quartz bead strands

Goldstone is aventurescent copper-bearing glass; pink beads are likely rose quartz (SiO₂), though dyed or glass imitations are possible

Weathered schistose metamorphic rock

Likely mica schist or phyllitic schist; composition commonly quartz, muscovite/biotite, and feldspar

Micaceous schist (likely muscovite schist)

Muscovite–quartz schist; primarily muscovite mica (KAl₂(AlSi₃O₁₀)(OH)₂) with quartz and possibly feldspar

Ferruginous Quartz

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Blue Goldstone

Aventurine Glass

Golden Calcite

Calcium Carbonate (CaCO3)

Likely clear quartz crystal (possibly cut/polished quartz or glass imitation)

Quartz, silicon dioxide (SiO₂)

Tumbled black stone, likely black obsidian

Obsidian; volcanic glass, typically rhyolitic composition (SiO₂-rich)

Iron-stained quartz-rich rock, likely quartzite

Quartzite; predominantly microcrystalline quartz (SiO₂) with iron-oxide minerals such as goethite and hematite

Mica-rich schist (likely biotite schist)

Biotite–quartz–feldspar schist; composition varies

Botryoidal hematite-goethite iron-oxide specimen

Hematite (Fe₂O₃) with goethite (FeO(OH)), likely coating quartz or iron-rich matrix

Milky quartz pebble

Quartz (silicon dioxide, SiO₂)

Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

Quartz-rich metamorphic rock, likely garnet-mica schist or gneiss

Quartz–feldspar–mica metamorphic rock; probable biotite schist/gneiss

Possible basaltic volcanic rock or iron-rich meteorite

Likely basalt (plagioclase–pyroxene rock); meteorite status cannot be confirmed visually

Iron-stained quartz vein fragment

Quartz, SiO₂, with iron-oxide/hydroxide staining (likely goethite or limonite)

Weathered, quartz-rich metamorphic rock (likely schist or gneiss)

Quartz–feldspar–mica schist/gneiss, with surface lichens and iron-oxide staining

Small metallic-gold mineral fragment, possibly pyrite

Pyrite (FeS₂), if confirmed

Quartz Vein on Matrix

Silicon Dioxide (SiO2)

Milky Quartz with Chlorite inclusion

Silicon Dioxide (SiO2) with Chlorite group inclusions

Slate

Slate, a fine-grained metamorphic rock composed mainly of mica-group minerals and quartz

Weathered metamorphic rock, likely quartz-mica schist

Quartz–mica schist; composition typically quartz + muscovite/biotite ± feldspar

Aquamarine with Quartz

Beryl (Be3Al2Si6O18) with Quartz (SiO2)

Polished orbicular jasper (likely leopard-skin or brecciated jasper)

Microcrystalline quartz (SiO₂), with iron-oxide and other mineral inclusions; exact variety cannot be confirmed from the photo

Small yellow-orange mineral fragment, likely amber or iron-stained quartz

Possibly amber (fossilized resin; organic mineraloid) or quartz (SiO₂)

Polished black stone, likely black obsidian

Obsidian (volcanic glass), chiefly silica-rich rhyolitic composition

Small seashell fossil or shell fragment

Likely calcium-carbonate shell material, chiefly aragonite or calcite; exact species indeterminate

Biotite-rich schist (probable mica schist)

Mica schist; chiefly quartz (SiO₂), biotite [K(Mg,Fe)₃AlSi₃O₁₀(F,OH)₂], and feldspar

Red gemstone ring, likely garnet or synthetic ruby

Possibly almandine garnet (Fe₃Al₂(SiO₄)₃) or corundum/ruby (Al₂O₃); image alone cannot distinguish

Rounded metamorphic pebble, likely mica schist or gneiss

Mica schist/gneiss; commonly quartz, feldspar, and biotite or muscovite mica

Ferruginous Sandstone

Clastic sedimentary rock (primarily Quartz with Iron Oxide cement)

Quartz-rich metamorphic rock, likely quartzite

Quartzite, composed predominantly of quartz (SiO₂), with dark biotite, amphibole, or iron-oxide inclusions

Likely anthracite coal fragments

Anthracite; predominantly carbon (C), with minor mineral ash

Pale greenish stone, likely serpentine or altered ultramafic rock

Serpentinite (主要 minerals: antigorite/lizardite, Mg3Si2O5(OH)4); identification is tentative from the image

Faceted citrine-colored gemstone (likely synthetic/display stone)

Quartz, SiO₂, if natural citrine; possibly synthetic sapphire or glass imitation

Dyed, polished stone—possibly rhodonite or pink jasper

Likely rhodonite (MnSiO₃) or manganese-rich jasper; exact identification requires testing