Basalt
Basalt (Aphanitic Mafic Igneous Rock)
Category
Browse man made metamorphic style composite specimens identified by the Rock Identifier community.
Basalt
Basalt (Aphanitic Mafic Igneous Rock)
Sandstone
Arenite (Sedimentary rock composed of sand-sized grains)
Granite
Phaneritic Igneous Rock (composed of quartz, alkali feldspar, and plagioclase)
Granite
Phaneritic Igneous Rock (composed primarily of Quartz SiO2, Alkali Feldspar, and Plagioclase)
Sandstone Concretion
Clastic Sedimentary Rock - Quartz Arenite / Sandstone
Jadeite Bangle
NaAlSi2O6 (Jadeite pyroxene mineral aggregate)
Pink Quartz
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Sodalite and Calcite
Na8(Al6Si6O24)Cl2 (Sodalite) and CaCO3 (Calcite)
Soapstone (Steatite)
Steatite (Hydrous magnesium silicate)
Crystalline limestone (marble-like calcite rock)
Calcite, CaCO₃; likely recrystallized limestone (marble)
Red Sandstone
Clastic Terrigenous Sedimentary Rock (primarily SiO2 with Fe2O3 coating)
Granite
Intrusive Igneous Rock (composed primarily of quartz, alkali feldspar, and plagioclase)
Granite fragment
Granite
Mica Schist
Mica Schist (contains Muscovite/Biotite, Quartz)
Milky quartz (quartz-rich fragment)
Quartz, silicon dioxide (SiO₂)
Milky quartz
Quartz (silicon dioxide, SiO₂)
Pyrite
Iron Sulfide (FeS2)
Pyrite
Iron Sulfide (FeS2)
Milky Quartz
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Potassium Feldspar
K-Feldspar (KAlSi3O8)
Quartzite
Quartzite (SiO2)
Eclogite
Eclogite (Omphacite-Garnet Metamorphic Rock)
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
Burmese Jadeite
Jadeite (NaAlSi2O6)
Bornite (Peacock Ore)
Bornite (Cu5FeS4)
Rose Quartz
Silicon Dioxide (SiO2) with traces of Titanium, Iron, or Manganese
Milky Quartz
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)
Quartzite Pebble
Metamorphic Quartz Sandstone (SiO2)
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals: (Mg, Fe)3Si2O5(OH)4)
Gray slate
Slate; fine-grained foliated metamorphic rock composed mainly of mica and quartz
Slate
Slate (foliated metamorphic rock, primarily composed of quartz, illite, chlorite, and micas)
Gneiss
Gneiss (high-grade metamorphic rock typically composed of quartz, feldspar, and mica)
Quartzite
Metamorphic Quartz Rock (SiO2)
Beryl (likely Aquamarine or Heliodor variant)
Beryllium aluminum cyclosilicate (Be3Al2Si6O18)
Blue Apatite
Fluorapatite / Apatite Group Ca5(PO4)3(F,Cl,OH)
Multi-Gemstone Quartz Bracelet (Amethyst, Aventurine, Rose Quartz, Clear Quartz)
Silicon Dioxide (SiO2) mixture