Quartz (partially iron-stained)
Silicon Dioxide (SiO2)
Category
Browse mineral, often found in metamorphic rocks but also in sedimentary and igneous rocks specimens identified by the Rock Identifier community.
Quartz (partially iron-stained)
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Pyrite
Iron Disulfide (FeS2)
Hematite
Iron(III) oxide (Fe2O3)
Epidote
{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Quartz
Silicon Dioxide (SiO2)
Graphite
Graphite (Chemical Formula: C)
Agate
Silicon Dioxide (Chalcedony), SiO2
Biotite Schist
Biotite Schist (K(Mg,Fe)3AlSi3O10(OH,F)2)
Aquamarine with Sunstone
Aquamarine (Be3Al2Si6O18), Sunstone (Na,Ca)Al(Si,Al)Si2O8
Green Calcite
Calcium Carbonate (CaCO3)
Pyrite
Iron Sulfide (FeS2)
Gneiss
Gneiss
Quartz
Silicon Dioxide (SiO2)
Blue Chalcedony
Silicon Dioxide (SiO2)
Gneiss
Gneiss (High-grade Metamorphic Rock)
Muscovite Mica
Muscovite (KAl₂(AlSi₃O₁₀)(F,OH)₂))
Likely banded gneiss
Gneiss, a foliated metamorphic rock composed chiefly of quartz, feldspar, and mica
Blue Apatite
Apatite Group (Ca5(PO4)3(F,Cl,OH))
Gneiss (likely Granitic Gneiss)
Gneiss
Pyrite
Iron Disulfide (FeS2)
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
Quartz (likely Rose Quartz or Milky Quartz based on color)
Quartz (SiO2 - Silicon Dioxide)
Prehnite
Calcium aluminum silicate hydroxide, Ca2Al(AlSi3O10)(OH)2
Magnetite
Magnetite (Fe3O4)
Quartz (pebble)
Quartz (SiO₂)
Pyrite or Chalcopyrite
Iron sulfide (FeS2) or Copper iron sulfide (CuFeS2)
Gneiss
Gneiss
Yellow Calcite
Calcium Carbonate (CaCO3)
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Magnetite Nodule
Magnetite (Fe3O4)
Banded Gneiss
Gneiss (High-grade Metamorphic Rock)
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
Blue Apatite
Fluorapatite / Chlorapatite [Ca5(PO4)3(F,Cl,OH)]
Magnetite (Iron Ore)
Magnetite (Fe3O4)
Pyrite in Matrix
Iron Sulfide (FeS2)
Clear Quartz
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Quartz
Silicon Dioxide (SiO2)