Mineral, Often Found In Metamorphic Rocks But Also In Sedimentary And Igneous Rocks

Sodalite

Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2)

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).

Epidote with Unakite characteristics

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

Nephrite Jade

Nephrite (a variety of the mineral actinolite within the amphibole group); Chemical Formula: Ca2(Mg,Fe)5Si8O22(OH)2

Gneiss

Gneiss

Pyrite

Iron Disulfide (FeS2)

Pyrite

Iron Sulfide (FeS2)

Quartz

Silicon Dioxide (SiO2)

Sunstone

Aventurine Feldspar (Plagioclase Feldspar with inclusions)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Blue Calcite

Calcium Carbonate (CaCO3)

Yellow Quartz (Citrine Quartz / Milky Quartz)

Silicon Dioxide (SiO2)

Gneiss

Gneiss

Prehnite

Prehnite Ca2Al2Si3O10(OH)2

Quartz

Silicon Dioxide (SiO2)

Milky Quartz

Quartz / Silicon Dioxide (SiO2)

Epidote (with Quartz and Feldspar)

Epidote (unakalite/unite), Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH)

Hematite

Hematite (Fe2O3)

White Quartz

Silicon Dioxide (SiO2)

Pyrite

Iron Sulfide (FeS2)

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Orange Calcite

Calcium Carbonate (CaCO3)

Pyrite

Iron Sulfide (FeS2)

Clear Quartz

Silicon dioxide (SiO2)

Black Tourmaline

Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Blue Chalcedony

Silicon Dioxide (SiO2)

Blue Apatite

Fluorapatite / Apatite Group (Ca5(PO4)3(F,Cl,OH))

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Epidote

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

Sodalite

Sodalite (Na4Al3Si3O12Cl)

Magnetite (Iron Ore)

Iron(II,III) oxide (Fe3O4)

Fuchsite Schist with Quartz

Chromian Muscovite [K(Al,Cr)2(AlSi3O10)(OH)2] Schist

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Pyrite

Iron Sulfide (FeS2)

Quartz

Silicon Dioxide (SiO2)

Magnetite / Iron Ore

Magnetite (Fe3O4)

Quartz

Silicon Dioxide (SiO2)

Potassium Feldspar

Orthoclase (KAlSi3O8)

Chalcedony (Agate/Carnelian)

Silicon Dioxide (SiO2)

Peach Moonstone

Orthoclase Feldspar (KAlSi3O8)

Garnet (Red Garnet)

Garnet Group. The red varieties seen in jewelry are typically Almandine (Fe3Al2(SiO4)3), Pyrope (Mg3Al2(SiO4)3), or a mix of the two (pyrope-almandine series).