Mineral (Tectosilicate)

Quartz Pebble

Quartz (Silicon Dioxide - SiO2)

Prehnite

Prehnite (Ca2Al2Si3O10(OH)2)

Blue Apatite

Apatite - Ca5(PO4)3(F,Cl,OH) (Calcium phosphate with Fluorine, Chlorine, or Hydroxyl)

Blue Apatite

Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)

Pyrite in Quartz

Iron Sulfide (FeS2) in Silicon Dioxide (SiO2)

Banded Gneiss

Gneiss (typically quartz, feldspar, mica, amphibole composition)

Pyrite

Iron Sulfide (FeS2)

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

Fluorite Tower

Fluorite (Calcium Fluoride - CaF2)

Schist

Schist (various mineral compositions)

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)

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)

Granite

Granite (Mainly Quartz, Alkali Feldspar, and Plagioclase)

Diorite

Diorite (Intermediate intrusive igneous rock)

Banded Gneiss

Gneiss (high-grade metamorphic silicate rock)

Gneiss

Gneiss (high-grade metamorphic rock)

Granite Gneiss

Gneiss (High-grade Metamorphic Rock)

Foliated Metamorphic Rock (likely Gneiss or Schist)

Gneissic Metamorphic Rock

Green Jasper

Silicon Dioxide (SiO2) with mineral inclusions

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

Marble

Recrystallized Calcite (CaCO3)

Granite

Intrusive Felsic Igneous Rock

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)

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)

Granitic Pegmatite with Schorl Tourmaline

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