Metamorphic And Igneous

Mixed Tumbled Stones Collection

Mixed Silicates and Carbonates (Quartz, Amorphous Silica, Carbonates)

Granite

Granite

Granite

Felsic Plutonic Rock (Granite)

Granite Pebble

Granite (composed primarily of Quartz SiO2, Feldspar KAlSi3O8, and Biotite/Hornblende)

Granite

Granite (Phaneritic Igneous Rock)

Quartz in Basalt (Xenocryst)

Silicon Dioxide (SiO2) in Mafic Igneous Volcanic Rock

Muscovite Mica

Muscovite - KAl2(AlSi3O10)(OH)2

Muscovite Mica (with Quartz matrix)

Muscovite - KAl2(AlSi3O10)(OH)2

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

Fuchsite (Green Muscovite)

K(Al,Cr)2(AlSi3O10)(OH)2

Hematite

Iron(III) oxide (Fe2O3)

Mica Schist

Crystalline Schist (often containing Muscovite, Biotite, and Quartz)

Nephrite Jade

Ca2(Mg, Fe)5Si8O22(OH)2

Nephrite Jade

Tremolite-Actinolite solid solution Ca2(Mg,Fe)5Si8O22(OH)2

Lapis Lazuli (Carved)

Lazurite-rich metamorphic rock (approx. (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2)

Lapis Lazuli

Lazurite-rich metamorphic rock ((Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Lapis Lazuli

Lazurite-rich metamorphic rock; (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2

Lapis Lazuli (prominent blue specimen in collection)

Lazurite-rich metamorphic rock (Na,Ca)8(AlSiO4)6(SO4,S,Cl,OH)2

Granite

Granite (a plutonic rock)

Quartzite

Quartzite (SiO2)

Quartz (River-worn Pebble)

Quartz (SiO2)

Aquamarine

Beryl (Be3Al2Si6O18 with Fe2+ impurities)

Granite Pebble

Granite (a plutonic igneous rock composed primarily of quartz, feldspar, and mica/amphibole)

Nephrite Jade

Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)

Lapis Lazuli

Complex metamorphic rock containing Lazurite ((Na,Ca)8(AlSiO4)6(SO4,S,Cl)2), Calcite, and Pyrite

Anthracite Coal

Anthracite (Carbon-based organic sedimentary rock exposed to metamorphic heat/pressure; Chemical composition is approximately 86%–98% Carbon)

Quartzite

Quartzite (primarily SiO2)

Quartz / Quartzite

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Dalmation Jasper (or Dalmation Stone)

Dalmation Stone (composed of Perthite, Quartz, and Arfvedsonite)

Serpentinite

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

Nuummite

Nuummite (Ortho-amphibole rock, primarily Anthophyllite and Gedrite)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with iron oxide inclusions)

Jadeite Jade

NaAlSi2O6 (Sodium Aluminum Silicate)

Serpentinite

Serpentinite (composed primarily of Serpentine group minerals: (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4)

Marble

Recrystallized Carbonate Rock (CaCO3)

Quartzite

Quartzite (primarily SiO2)

Quartzite

Quartzite (SiO2)

Schist

Mica Schist

Quartzite

Quartzite (primarily SiO2)

Quartzite

Metamorphosed Quartz Sandstone (SiO2)

Iron-Stained Quartzite

Quartzite (chemically SiO2 with Fe2O3/FeO(OH) staining)