White Quartz (Milky Quartz)
Quartz (Silicon Dioxide, SiO2)
mineral
Category
Igneous, Sedimentary, Metamorphic, And Mineral
Browse igneous, sedimentary, metamorphic, and mineral specimens identified by the Rock Identifier community.
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Schist (specifically Chlorite/Greenschist)
Chlorite Schist
metamorphic
Gneiss
Gneiss
metamorphic
Garnetiferous Pegmatite
Pegmatite with Almandine Garnet and Muscovite
igneous
Gneiss
Gneiss (High-grade metamorphic rock composed primarily of Quartz, Feldspar, and various Micas)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon dioxide (SiO2)
mineral
Gneiss
Foliated Metamorphic Rock (Gneiss)
metamorphic
Quartz (Milky and Smoky variety)
Silicon Dioxide (SiO2)
mineral
Quartz Vein in Host Rock (Breccia/Rhyolite)
Silicon Dioxide (SiO2) with matrix
Mineral in Igneous/Sedimentary host
Kyanite
Kyanite (Al2SiO5)
mineral
Banded Gneiss
Gneiss (High-grade metamorphic rock typically composed of Quartz, Feldspar, and Mica)
metamorphic
Calcite (Yellow/Orange variety - sometimes called Honey Calcite)
Calcite
Mineral
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Muscovite Mica
Muscovite (Potassium Aluminum Silicate) - KAl2(AlSi3O10)(F,OH)2
mineral
Biotite Schist (likely)
Biotite Schist (rock), Biotite (mineral)
Metamorphic
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
Corundum
Corundum (Al2O3)
Mineral
Sodalite
Sodalite, Na8(Al6Si6O24)Cl2
Mineral
Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Milky Quartz with inclusions
Silicon Dioxide (SiO2)
mineral
Granitic Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Gneiss (Schistose)
Gneiss
metamorphic
Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
mineral
Ruby in Zoisite
Zoisite with Corundum (Ca2Al3(SiO4)(Si2O7)O(OH) + Al2O3)
metamorphic
Gneiss
Gneiss
metamorphic
White Sapphire
Corundum (Al2O3)
mineral
Gneiss (Metamorphic Rock)
Gneiss (variable mineral formula primarily containing Quartz, Feldspar, and Mica)
metamorphic
Quartz (possibly milky quartz)
Quartz (Silica; SiO₂)
Mineral
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Micaceous Rock (likely Muscovite Schist/Gneiss or a Muscovite-rich Specimen)
Predominantly Muscovite (KAl2(AlSi3O10)(F,OH)2), often found in rocks like Muscovite Schist or Muscovite Gneiss.
Metamorphic, Mineral (within a rock type)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Gneiss (specifically a Banded Gneiss cobble)
Gneiss (composed mainly of Quartz, Feldspar, and Biotite/Amphibole)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Schist
N/A (a rock type, not a mineral formula)
metamorphic
Jadeite and Assorted Corundum (Ruby/Sapphire) / Beryl (Emerald)
Jadeite (NaAlSi2O6), Ruby/Sapphire (Al2O3), Emerald (Be3Al2(SiO3)6)
mineral
Gneiss (specifically a granitic gneiss cobble)
Gneiss (high-grade regional metamorphic rock)
metamorphic
Mica
Phlogopite or Biotite group (KMg3(AlSi3O10)(F,OH)2 / K(Mg,Fe)3AlSi3O10(OH)2)
mineral
Quartz pebble / River stone
SiO2 (Silicon Dioxide)
mineral
Amethyst
Amethyst (Silicon Dioxide, SiO2)
mineral