Mineral Side Rock

Pyrite Cubes in Matrix

Iron Disulfide (FeS2) in Host Matrix

Mixed Rock Collection

Polylithic Geological Specimen Mix

Moon (lunar surface depiction)

Lunar rock; chiefly anorthosite, basalt, and breccia (plagioclase-rich CaAl2Si2O8)

Sandstone (with potential fossil fragments)

Sandstone (SiO2 dominated with iron oxides)

Epidote

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

Cowrie Shell Fossil

Cypraea sp.

Fossil brachiopod shell

Likely a spiriferid or orthid brachiopod; shell composed mainly of calcium carbonate (calcite)

Sandstone with Mineral Veining or Crust

Sedimentary Sandstone (mostly SiO2 with Fe2O3 tinting)

Epidote

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

Epidote

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

Shiva Eye Shell (Operculum)

Calcium Carbonate (Aragonite), CaCO3

Granite

Granite (Plutonic Felsic Igneous Rock)

Basalt with Quartz Vein and Weathering Crust

Amygdaloidal or Porphyritic Basalt

Watermelon Tourmaline

Elbaite (Na(Li,Al)3Al6(Si6O18)(BO3)3(OH)4)

Fossil Coral

Scleractinia (Fossilized Coral) / Calcium Carbonate (CaCO3) or Silica (SiO2)

Epidote

{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)

Likely polished basalt or iron-rich metamorphic rock

Basaltic rock, chiefly plagioclase and pyroxene; exact identification requires testing

Epidote

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

Epidote or Unakite Rock

Epidote-bearing rock / Ca2(Al,Fe)3(SiO4)3(OH)

Garnet in Matrix

Almandine/Grossular Garnet in Pegmatite or Schist

Epidote-bearing Rock / Epidote Inclusion

Epidote (Ca2(Al, Fe)3(SiO4)3(OH)) in host rock

Quartzite river pebble

Quartzite (SiO2)

Epidote

Epidote ({Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH))

Epidote in Basalt

Epidotized Basalt (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH) in Mafic Igneous Host)

River Cobble (likely Metasedimentary)

Metasedimentary Rock / Quartz-rich Sandstone

Epidosite (Epidote-rich rock)

Epidotalite (primarily Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH))

Epidote

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

Crinoid Fossil Stem Segment

Class Crinoidea (Echinodermata)

Seashell (Cockle Shell)

Cardiidae (Bivalvia), primary composition: Calcium Carbonate (CaCO3) in the form of aragonite or calcite

Cockle Shell Fossil

Cardium (Bivalvia)

Epidote

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

Epidote

Epidote - Ca2(Al2,Fe3+)3(SiO4)3(OH)

Obsidian Arrowhead

Volcanic Glass (SiO2)

Herkimer Diamond

Quartz (Silicon Dioxide, SiO2)

Iron Meteorite (likely Chondrite or weathered Iron-Nickel)

Meteorite (Fe-Ni alloy & silicates)

Epidote

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

Epidote

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

Sandstone Pebble

Sandstone (Siliciclastic Sedimentary Rock)

Epidosite (Epidote-rich rock)

Epidosite (consisting primarily of Epidote: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH))

Scoria (Lava Rock)

Vesicular Basalt / Scoria

Quartz Druze (Crystalline Quartz)

Silicon Dioxide (SiO2)

Note: Item is not a geological specimen

Polyester mesh and Ethylene-vinyl acetate (EVA) polymer