Mica Schist
Mica Schist (primarily Muscovite or Biotite sheet silicates)
metamorphic
Category
Mineral (Processed Metal)
Browse mineral (processed metal) specimens identified by the Rock Identifier community.
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Garnet
Group of silicate minerals (e.g., Almandine: Fe3Al2(SiO4)3)
gemstone
Chert (Nodular Chert)
Microcrystalline Silica (SiO2)
sedimentary
Tanzanite
Blue-violet Zoisite (Ca2Al3(SiO4)3(OH))
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Fossil Shark Tooth
Chondrichthyes (class)
fossil
Tiger's Eye
Silicon Dioxide with Crocidolite inclusions (SiO2)
mineral
Blue Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Quartz (Variety: Citrine or Tumbled Chalcedony)
Silicon Dioxide (SiO2)
mineral
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Assorted Decorative Tumbled Stones (Quartz, Sodalite, Aventurine, Calcite)
Mixed Silicates and Carbonates (SiO2, Na8(Al6Si6O24)Cl2, CaCO3)
mineral
Calcite
Calcium Carbonate (CaCO3)
mineral
Blue Apatite
Apatite - Ca5(PO4)3(F,Cl,OH) (Calcium phosphate with Fluorine, Chlorine, or Hydroxyl)
mineral
Tiger's Eye
Pseudomorph of Quartz (SiO2) after Crocidolite
mineral
Aquamarine (Beryl)
Beryllium Aluminum Silicate - Be3Al2Si6O18
gemstone
Limonite (Yellow Ochre)
Hydrated iron(III) oxide-hydroxide (FeO(OH)·nH2O)
mineral
Pink Tourmaline in Quartz Matrix
Elbaite (Na(Li,Al)3Al6(BO3)3Si6O18(OH)4) with Quartz (SiO2)
mineral
Ferruginous Quartz
Quartz (Silicon Dioxide, SiO2) with iron oxide inclusions
mineral
Green Quartz (Aventurine or Prase)
Silicon Dioxide (SiO2) with inclusions
mineral
Magnetite (in matrix)
Magnetite (Fe3O4)
mineral
Aquamarine
Beryl (Be3Al2Si6O18), specifically the blue-green variety
Mineral
Quartz Vein Rock
Silicon dioxide (SiO2) within a host rock matrix
mineral
Cubic Zirconia
Zirconium dioxide (ZrO2)
mineral
Fossil Shark Tooth
Carcharodon or Carcharias fossil (Vertebrate Fossil)
sedimentary
Petrified Wood
Silicified Wood (primarily SiO2)
fossil
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone River Cobble
Arenite (predominantly SiO2)
sedimentary
Petrified Wood
Silicified Wood (primarily SiO2 - Silicon Dioxide)
sedimentary
Petrified Wood
Silicified Wood (primarily SiO2)
sedimentary
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Man-made Synthetic Material (Costume Faux Fur)
Synthetic Polymer (Polyester/Acrylic)
not a rock
Lepidolite (Tumbled)
K(Li,Al)3(Al,Si,4O10)(F,OH)2
mineral
Iron Ore (Magnetite-Hematite)
Magnetite (Fe3O4) and Hematite (Fe2O3)
mineral
Aquamarine
Beryl (Be3Al2Si6O18), specifically the blue-green variety
Mineral
Mixed Gemstone Collection
SiO2 (Quartz varieties) and Biogenic CaCO3 (Nacre)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Generic Rock Fragment
Rock Fragment
sedimentary
Fossilized Tooth
Vertebrate Fossilized Tooth (Mineralized Biogenic Material)
fossil
Turquoise
CuAl6(PO4)4(OH)8·4H2O
mineral
Polished Hematite Tower
Hematite (Fe2O3)
mineral
Sandstone
Arenite (principally SiO2)
sedimentary