Quartzite (specifically Pink or Red Quartzite)
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Category
Metamorphic (Low Grade)
Browse metamorphic (low grade) specimens identified by the Rock Identifier community.
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Lapis Lazuli
Lapis Lazuli (Complex silicate rock containing Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Pyrite, and Calcite)
metamorphic
Lapis Lazuli
Lapis Lazuli (A metamorphic rock primarily composed of Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
metamorphic
Quartzite
Quartzite (SiO2)
metamorphic
Quartzite
Quartzite (primarily SiO2)
metamorphic
Sodalite
Na8(Al6Si6O24)Cl2 (Sodalite)
mineral
Gneiss
Gneiss (a metamorphic rock)
Metamorphic
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Aventurine
Silicon Dioxide (SiO2) with inclusions
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Nephrite Jade
Ca2(Mg, Fe)5Si8O22(OH)2
metamorphic
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz (Milky/Bull Quartz)
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss (Metamorphic rock of variable composition, typically SiO2 rich)
metamorphic
Peach Moonstone (Orange/Peach Feldspar)
Potassium aluminum silicate (KAlSi3O8)
mineral
Dumortierite Quartz
Al7(BO3)(SiO4)3O3
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Amethyst (Ametrine or Bicolor Quartz variant)
Silicon Dioxide (SiO2) with iron impurities
mineral
Engineer Quartz/Quartzite
SiO2 (Silicon Dioxide with binders)
Sedimentary or metamorphic-derived
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartzite (River Cobble)
Quartzite (SiO2)
metamorphic
Pyrite
Iron Disulfide (FeS2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Calcite (Optical Calcite / Iceland Spar)
Calcium Carbonate (CaCO3)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Red Garnet (likely Almandine)
Almandine (Fe3Al2(SiO4)3)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Biotite Mica
Biotite (K(Mg,Fe)3AlSi3O10(OH,F)2)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Anthracite Coal
Anthracite (high-rank coal)
metamorphic
Schist
Schist (various compositions)
metamorphic
Milky Quartz (Common Quartz)
Quartz (Silicon Dioxide, SiO2)
mineral
Aquamarine
Beryl (Be3Al2Si6O18)
mineral
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Ruby (Raw Corundum)
Corundum (Al2O3 with Chromium impurities)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Iron-stained Quartz Pebble
Crystalline Silicon Dioxide (SiO2) with Hematite/Limonite staining
mineral
Corundum (Ruby variety)
Aluminium oxide (Al2O3)
mineral
Rutilated Quartz
Quartz with Rutile inclusions (SiO2 with TiO2)
mineral