Potassium Feldspar (Orthoclase / Microcline)
KAlSi3O8
mineral
Category
Igneous, Sedimentary, And Metamorphic
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Quartz Pebble (Iron-Stained Quartz)
Silicon Dioxide (SiO2)
mineral
Potassium Feldspar
K-Feldspar (Orthoclase/Microcline), KAlSi3O8
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
gemstone
Biotite (Black Mica)
Biotite - K(Mg,Fe)3(AlSi3O10)(F,OH)2
mineral
Strawberry Quartz (Aventurine)
Silicon Dioxide with Hematite/Lepidocrocite inclusions (SiO2)
mineral
Strawberry Quartz
Quartz with Hematite inclusions (SiO2 + Fe2O3)
mineral
Moonstone
Orthoclase Feldspar ((K,Na)AlSi3O8)
mineral
Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
mineral
Tumbled Moonstone
Feldspar (Orthoclase/Albite), KAlSi3O8
mineral
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
mineral
Citrine
Silicon dioxide (SiO2)
mineral
Chalcopyrite
Copper Iron Sulfide (CuFeS2)
mineral
Labradorite
(Ca,Na)(Al,Si)4O8
mineral
Labradorite (tumbled)
Labradorite (a plagioclase feldspar mineral between anorthite and albite; chemical formula: (Ca,Na)(Si,Al)4O8)
Mineral
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).
Mineral
Clear Quartz Cluster
Crystalline Silicon Dioxide (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Sandstone or Quartzite
Arenite (if sedimentary) / Quartzite (if metamorphic)
Sedimentary or Metamorphic
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
gemstone
Ruby (Cabochon)
Corundum (Al2O3)
gemstone
Black Tourmaline
Schorl (NaFe2+3Al6(Si6O18)(BO3)3(OH)4)
mineral
Labradorite
(Ca,Na)(Al,Si)4O8 (Plagioclase Feldspar)
mineral
Microcline Feldspar
KAlSi3O8
mineral
Pyrite or Chalcopyrite specimen (Gold-colored mineral coating)
Iron Sulfide (FeS2) / Copper Iron Sulfide (CuFeS2)
mineral
Black Tourmaline (Schorl)
NaFe2+3Al6(BO3)3Si6O18(OH)4
mineral
Muscovite Mica
Muscovite - KAl2(AlSi3O10)(F,OH)2
mineral
Tourmaline in Quartz Matrix
Complex silicate of boron and aluminum (Schorl/Elbaite/Dravite) - Na(Li,Al)3Al6(BO3)3Si6O18(OH)4
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Aquamarine
Beryl (Be3Al2Si6O18 with Fe impurities)
mineral
Blue Apatite
Calcium Fluorophosphate (Ca5(PO4)3F)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Orthoclase Feldspar
Potassium Feldspar (KAlSi3O8)
mineral
Black Tourmaline (Schorl)
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Rainbow Moonstone
White Labradorite (Plagioclase Feldspar), (Na,Ca)(Al,Si)4O8
gemstone
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Spessartine Garnet
Manganese aluminum silicate (Mn2+3Al2(SiO4)3)
mineral
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral