Milky Quartz
Silicon Dioxide (SiO2)
mineral
Category
Sedimentary And Metamorphic Minerals
Browse sedimentary and metamorphic minerals specimens identified by the Rock Identifier community.
Ferruginous Quartzite (Iron-stained Quartz)
Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3)
metamorphic
Metagabbro / Epidote Gneiss
Epidote bearing Hornblende Gneiss
metamorphic
Map Jasper (Picasso Stone)
Metamorphosed Calcium Carbonate (Crystalline Limestone or Marble with Silicate inclusions/impurities)
metamorphic
Schist
Mica Schist (contains muscovite/biotite and quartz)
metamorphic
Green Quartzite
Quartzite (primarily SiO2 with chlorite inclusions)
metamorphic
Lapis Lazuli
Lapis Lazuli (Rock composed primarily of Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Calcite, and Pyrite)
metamorphic
Blue Quartzite
Silicon Dioxide (SiO2) with inclusions
metamorphic
Blue Quartz (Aventurine)
Silicon Dioxide (SiO2) with inclusions of crocidolite or dumortierite
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Pyrite
Pyrite (FeS2)
Mineral
Marble
Marble (metamorphosed limestone/dolostone). Predominantly composed of Calcite (CaCO3) for marble derived from limestone, or Dolomite (CaMg(CO3)2) for marble derived from dolostone.
Metamorphic Rock
Serpentine Schist with Quartz Vein
Serpentine Schist (a type of Metamorphic rock). The white band is likely Quartz (SiO2).
Metamorphic
Gneiss (specifically Granite Gneiss)
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Quartz
Silicon Dioxide (SiO2)
Mineral
Ferruginous Quartz (River Pebble)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Quartz (Milky/Rose variety)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Aventurine
Quartzite with inclusions (SiO2)
metamorphic
Schist
Mica Schist (Group of medium-grade metamorphic rocks)
metamorphic
Mica Schist
Mica Schist (primarily Muscovite and Quartz)
metamorphic
Blue Spinel on Marble with Phlogopite
MgAl2O4 (Spinel) in CaCO3 (Calcite/Marble) matrix
metamorphic
Connemara Marble
Ophiocalcite (Serpentinitic Marble)
metamorphic
Fluorite
Calcium Fluoride (CaF2)
mineral
Garnet (Almandine)
Almandine (Fe3Al2(SiO4)3)
Mineral
Nuummite
Nuummite (Orthorhombic amphiboles: Anthophyllite and Gedrite)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Milky Quartz (Vein Quartz)
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Clear Quartz
Silicon Dioxide (SiO2) / Rock Crystal
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Marble
Recrystallized Calcite / Dolomite (CaCO3)
metamorphic
Magnetite
Magnetite (Fe3O4)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral