Mineral Composite

Pyrite

Iron Sulfide (FeS2)

Sandstone (Ferruginous)

Arenite with Iron-Oxide Cement

Mica Group Minerals

There isn't a single scientific name as 'Mica' refers to a group of phyllosilicate minerals. Common scientific names include Muscovite (KAl₂ (AlSi₃O₁₀)(OH)₂), Biotite (K(Mg,Fe)₃AlSi₃O₁₀(OH)₂), Phlogopite (KMg₃AlSi₃O₁₀(OH)₂), and Lepidolite (K(Li,Al)₃(Al,Si,Rb)₄O₁₀(F,OH)₂).

Fluorite (Rainbow, Purple-Blue Tumbled)

Calcium Fluoride (CaF2)

Quartz (Clear Quartz/Rock Crystal)

Silicon Dioxide (SiO2)

Not a rock, mineral, or geological specimen

Garden Quartz (Lodalite)

Silicon Dioxide with various mineral inclusions (SiO2)

Gneiss (Cobble)

Gneiss

Granite

Intrusive Felsic Igneous Rock

Fluorite Tower

Fluorite (Calcium Fluoride - CaF2)

Schist

Schist (various mineral compositions)

Sandstone (with potential iron-oxide staining)

Arenite (primarily SiO2)

Sandstone (with Limonite staining)

Arenite (primarily SiO2 with FeO(OH)·nH2O)

Granite Gneiss

Gneiss (high-grade metamorphic rock)

Sandstone (likely Arkosic or Lithic)

Clastic Sedimentary Rock (SiO2 with accessory minerals)

Unakite

Epidotized Granite

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Diorite

Diorite (Intermediate intrusive igneous rock)

Granite

Granite (Felsic Plutonic Rock)

Turquoise

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

Green Jasper

Silicon Dioxide (SiO2) with mineral inclusions

Granite

Granite (Mainly Quartz, Alkali Feldspar, and Plagioclase)

Diorite

Diorite (Intermediate intrusive igneous rock)

Banded Gneiss

Gneiss (high-grade metamorphic silicate rock)

Foliated Metamorphic Rock (likely Gneiss or Schist)

Gneissic Metamorphic Rock

Granite Gneiss

Gneiss (High-grade Metamorphic Rock)

Gneiss

Gneiss (high-grade metamorphic rock)

Azurite with Malachite

Azurite: Cu3(CO3)2(OH)2 / Malachite: Cu2CO3(OH)2

Azurite in Matrix

Azurite (Cu3(CO3)2(OH)2)

Gneiss (specifically Granite Gneiss)

Gneiss (High-grade Regional Metamorphic Rock)

Sandstone with Iron Concretion

Arenite with Limonite/Goethite Concretion

Granite Glacial Erratic

Intrusive Phaneritic Felsic Rock (Granite)

Greenschist (Chlorite Schist)

Greenschist (Metamorphic rock dominated by chlorite, actinolite, and epidote)

Mica Schist

Mica Schist (primarily Muscovite or Biotite sheet silicates)

Sandstone

Arenite (Siliclastic sedimentary rock)

Azurite Malachite (Mixed)

Azurite-Malachite; Azurite: Cu3(CO3)2(OH)2 / Malachite: Cu2CO3(OH)2

Jade (likely Jadeite)

Jadeite (a pyroxene mineral) or Nephrite (a variety of amphibole mineral)

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic Volcanic Rock)

Sandstone (Ferruginous)

Arenite (with iron oxide cement)

Granitic Pegmatite with Schorl Tourmaline

Granitic Pegmatite (Schorl: NaFe3Al6(BO3)3Si6O18(OH)4)

Native Copper

Native Copper (Cu)

Red Sandstone (Old Red Sandstone)

Ferruginous Sandstone (SiO2 + Fe2O3)