Organic (Geological Relative)

Fluorite

Fluorite (Calcium Fluoride, CaF2)

Greenstone / Greenschist

Chlorite schist / Epidiorite / Metabasalt

Green Fluorite

Fluorite (Calcium Fluoride - CaF2)

Bornite

Bornite (Cu5FeS4)

Limonite/Hematite Ironstone

Goethite-rich Ironstone (FeO(OH) · nH2O)

Tumbled pink quartz (probable rose quartz)

Quartz, silicon dioxide (SiO₂), likely rose quartz

Ferruginous Quartz on Ironstone

Silicon Dioxide (SiO2) with Hematite (Fe2O3)

Limonite (Iron Ore)

FeO(OH)·nH2O (Hydrous ferric oxide)

Blue sodalite-bearing rock, likely sodalite in nepheline syenite

Sodalite (Na₈Al₆Si₆O₂₄Cl₂), possibly in nepheline syenite

Rounded gray river pebble, likely basalt or andesite

Fine-grained mafic to intermediate volcanic rock; commonly basalt (plagioclase + pyroxene, sometimes olivine)

Ironstone (with possible Hematite/Limonite coating)

Ironstone (Fe-rich sedimentary rock)

Cobaltian Calcite (Cobaltoan Calcite)

Cobalt-bearing Calcite (Ca,Co)CO3

Rhodochrosite

Manganese Carbonate (MnCO3)

White marble (likely calcitic marble)

Calcite-rich marble; primarily calcium carbonate, CaCO₃

Fluorite

Calcium Fluoride (CaF2)

Citrine-bearing quartz cluster

Quartz, silicon dioxide (SiO₂), with iron-related yellow coloration

Limonite Concretion

Hydrated iron(III) oxide-hydroxide (FeO(OH)·nH2O)

Fluorite

Calcium Fluoride (CaF2)

Green Fluorite

Fluorite (Calcium Fluoride, CaF2)

Purple fluorite specimen

Fluorite (calcium fluoride, CaF₂)

Serpentinized ultramafic rock (likely serpentinite)

Serpentinite; chiefly serpentine-group minerals Mg₃Si₂O₅(OH)₄, with magnetite, olivine, and pyroxene remnants

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Chalcedony in Host Rock

Chalcedony (SiO2)

Weathered sandstone fragment

Quartz-rich sandstone, likely ferruginous sandstone

Fluorite

Calcium Fluoride (CaF2)

Fluorite

Fluorite (Calcium Fluoride - CaF2)

Fluorite

Fluorite (Calcium Fluoride, CaF2)

Blue Apatite

Apatite-(CaF), Ca5(PO4)3F

Epidote

Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)

Quartz Crystal (Smoky Quartz)

Silicon Dioxide (SiO2)

Colorless faceted gemstone (most likely synthetic cubic zirconia)

Cubic zirconia, ZrO₂ (likely synthetic); natural alternatives include quartz or diamond

Weathered volcanic rock, likely vesicular basalt or scoria

Basaltic volcanic rock; predominantly plagioclase, pyroxene, and possibly olivine with iron-oxide weathering

Fluorite

Calcium Fluoride (CaF2)

Greenstone

Chlorite schist / Meta-basalt

Serpentinite (probable)

Serpentinite; chiefly serpentine-group minerals, commonly lizardite, chrysotile, or antigorite, with possible magnetite and relict olivine/pyroxene

Dalmatian jasper

Orbicular rhyolite, commonly sold as Dalmatian jasper; mainly quartz, feldspar, and altered mafic minerals

Serpentinite with carbonate veins

Serpentinite; chiefly serpentine-group minerals (antigorite/lizardite, Mg₃Si₂O₅(OH)₄) with white calcite or magnesite veins

Malachite

Copper carbonate hydroxide [Cu2CO3(OH)2]

Milky quartz

Quartz (silicon dioxide, SiO₂)

Eclogite

Eclogite (composed primarily of Omphacite and Pyrope Garnet)

Rounded limestone pebble

Limestone, predominantly calcite (CaCO₃)

Tumbled labradorite

Labradorite, calcium-rich plagioclase feldspar; approximately (Ca,Na)(Al,Si)₄O₈