Mineral Side Rock

Yellow Calcite (or Orange/Banded Calcite)

Calcium Carbonate (CaCO3)

Rough Garnet in Matrix

Almandine Garnet (Fe3Al2Si3O12)

Garnet

Pyrope or Almandine (X3Y2(SiO4)3)

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

Clear Quartz

Silicon dioxide (SiO2)

Raw quartz crystal

Quartz (silicon dioxide, SiO₂)

Epidote

Epidote (Ca2(Al,Fe)3(SiO4)3(OH))

Quartz crystal fragment in weathered host rock

Quartz (SiO₂), possibly in a feldspathic or iron-stained matrix

Uncertain polished mineral specimen

Indeterminate; possibly quartz or feldspar with iron-oxide staining

Fossil Shark Tooth (Sand Tiger or Mackerel Shark)

Carcharias sp. or Otodus sp. replaced by Hydroxylapatite/Calcium Carbonate

Clear quartz crystal

Quartz (SiO₂), likely a small hexagonal prismatic crystal

Amethyst cluster/geode

Quartz, crystalline silica (SiO₂), purple variety colored mainly by iron impurities and irradiation

Epidote

Epidote (Ca2(Al, Fe)3(SiO4)3(OH))

Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Quartz

Silicon Dioxide (SiO2)

Petoskey Stone

Hexagonaria percarinata (Fossilized Coral)

Milky quartz (rough quartz crystal)

Quartz, silicon dioxide (SiO₂)

Milky quartz crystal cluster

Quartz (silicon dioxide, SiO₂)

Clear quartz crystal

Quartz (silicon dioxide, SiO₂)

Milky quartz with iron-oxide staining

Quartz (silicon dioxide, SiO₂), likely a translucent massive variety

Black Tourmaline

Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)

Quartz–calcite sulfide-bearing mineral specimen

Quartz (SiO₂) with likely calcite (CaCO₃) and iron sulfides, possibly pyrite (FeS₂); exact species requires testing

Clear Quartz

Silicon Dioxide (SiO2)

Milky quartz

Quartz (silicon dioxide, SiO₂)

Clear quartz crystal (likely quartz bead/specimen)

Quartz, silicon dioxide (SiO₂)

Quartz crystal cluster (likely rose or milky quartz)

Quartz, silicon dioxide (SiO₂); trigonal crystal system

Garnet in Matrix

Almandine or Pyrope Garnet (X3Y2(SiO4)3) in Schist or Eclogite matrix

Epidote (Unakite variety)

Epidosite (Metasomatic rock containing Ca2(Al,Fe)3(SiO4)3(OH))

Granodiorite Core

Granodiorite

Likely basalt fragment

Basalt, a fine-grained mafic volcanic rock composed mainly of plagioclase feldspar and pyroxene, commonly with olivine

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

Mixed Silicates and Sulfides (SiO2, FeS2)

Iron-stained quartz crystal cluster

Quartz (SiO₂), likely iron-oxide-stained; exact variety uncertain

Clear quartz crystal

Quartz (silicon dioxide, SiO₂)

Smoky quartz crystal cluster

Quartz, silicon dioxide (SiO₂), likely smoky variety with possible feldspar or matrix inclusions

Amethyst quartz cluster

Quartz, SiO₂; purple variety amethyst

Epidote

Epidote (Ca2(Al,Fe)3(SiO4)3(OH))

Fluorite

Calcium Fluoride (CaF2)

Petoskey Stone

Hexagonaria percarinata

Mixed quartz specimens, including amethyst

Quartz (SiO₂), with purple amethyst variety; possible milky or included quartz

Clear quartz crystal

Quartz (silicon dioxide, SiO₂)

Epidote

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

Amethyst

Crystalline Quartz (SiO2 with iron impurities)