Mineral (Tectosilicate)

Rainbow Fluorite

Fluorite (Calcium Fluoride, CaF2)

Milk Quartz (White Quartz)

Silicon Dioxide (SiO2)

Fluorite

Calcium Fluoride (CaF2)

Fluorite (Rainbow Fluorite)

Calcium Fluoride (CaF2)

Banded Quartz

Silicon Dioxide (SiO2)

Green Fluorite

Fluorite (Calcium Fluoride, CaF2)

Unidentified gray rock/mineral specimen

Indeterminate; possibly quartz-rich rock or a metallic sulfide-bearing specimen

Vanadinite

Pb5(VO4)3Cl

Turquoise

CuAl6(PO4)4(OH)8"""""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" """""""""" • 4H2O (Hydrated copper and aluminum phosphate)

Turquoise

Hydrated phosphate of copper and aluminum, CuAl6(PO4)4(OH)8·4H2O

Limonite

FeO(OH)•nH2O

Hematite (Botryoidal / Kidney Ore)

Iron Oxide (Fe2O3)

Copper Ore (with Malachite/Chrysocolla and Iron Oxides)

Secondary Copper Minerals (Cu2(CO3)(OH)2 / (Cu,Al)2H2Si2O5(OH)4·nH2O)

Lepidolite

K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2

Limonite with Ironstone

Limonite (hydrated iron(III) oxide-hydroxides), FeO(OH)·nH2O

Turquoise (with Hematite)

CuAl6(PO4)4(OH)8·4H2O

Limonite (Iron Ore)

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

Limonite (Ironstone)

Hydrous ferric oxides (FeO(OH)·nH2O)

Indeterminate metallic mineral fragments

Possibly pyrite, chalcopyrite, or metallic sulfide-bearing rock

Small white mineral fragment

Indeterminate; possibly quartz, calcite, or feldspar

Malachite

Copper Carbonate Hydroxide, Cu2CO3(OH)2

Fluorite

Fluorite (Calcium Fluoride, CaF2)

Limonite (Iron Ore)

FeO(OH)·nH2O

Amygdaloidal Basalt

Amygdaloidal Basalt

Limonite Nodules / Goethite

Hydrated Iron Oxide-Hydroxide (FeO(OH)·nH2O / Fe2O3·nH2O)

Epidote in Matrix

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

Arsenopyrite in Quartz Matrix

Arsenopyrite (FeAsS) with Quartz (SiO2)

Fluorite

Calcium Fluoride (CaF2)

Polished bumblebee jasper (likely Indonesian orbicular jasper)

Jasper: microcrystalline quartz (SiO₂), with iron oxides and volcanic/mineral inclusions

Granite fragment

Granite; mainly quartz (SiO₂), feldspar, and mica

Weathered basalt (likely altered basalt)

Basalt, chiefly plagioclase feldspar and pyroxene, with possible chlorite/epidote alteration

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic Volcanic Rock)

Ironstone Concretion (Limonite/Goethite)

Ferruginous Sandstone or Limonite (FeO(OH)·nH2O)

Tumbled milky quartz pebble

Quartz (silicon dioxide, SiO₂)

Gneiss

Gneiss

Iron-stained Quartz

Silicon Dioxide with Limonite (SiO2 + FeO(OH)·nH2O)

Gneiss (with iron staining)

Gneiss

Gabbro

Gabbro (Mafic Plutonic Rock)

Banded Gneiss

Gneiss (High-grade regional metamorphic rock)

Gneiss (Metamorphic Rock)

Gneiss

Granite (Dioritic variant)

Phaneritic Felsic Igneous Rock (primarily Quartz, Feldspar, and Mica)

Gneiss

Gneiss (High-grade regional metamorphic rock)