Smoky Quartz
Smoky Quartz (Silicon Dioxide, SiO2)
mineral
Category
Mineral, Often Found In Metamorphic Rocks But Also In Sedimentary And Igneous Rocks
Browse mineral, often found in metamorphic rocks but also in sedimentary and igneous rocks specimens identified by the Rock Identifier community.
Fluorite with Rhodochrosite
Fluorite (CaF2) and Rhodochrosite (MnCO3)
Mineral
Citrine (Heat-treated or Natural Quartz)
Silicon Dioxide (SiO2)
mineral
Hematite (Iron Ore)
Hematite (Fe2O3)
mineral
Schorl (Black Tourmaline)
Sodium Iron Aluminum Borosilicate (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Aquamarine (Pendant) and Jasper (Beads)
Beryllium aluminum silicate (Be3Al2Si6O18) with Chalcedony (SiO2)
mineral
Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Pegmatite (likely Granitic Pegmatite)
Pegmatite (a coarse-grained igneous rock, often with granitic composition)
igneous
Calcite
Calcite (CaCO 3)
Mineral
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Banded Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Chalcedony (Quartz Var.)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
White Agate (Chalcedony)
Silicon Dioxide (SiO2)
mineral
Banded Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Carnelian
Carnelian (a variety of Chalcedony, SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Gneiss (specifically Micaceous Gneiss)
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Amazonite
Potassium aluminum silicate (KAlSi3O8)
mineral
Olivine (Peridotite/Dunite)
Olivine (Mg,Fe)2SiO4 within Peridotite
igneous
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Gold Ore in Quartz/Schist
Auriferous Quartz and Sulfide-bearing Schist
Metamorphic/Igneous (Hydrothermal)
Specular Hematite
Hematite (Fe2O3)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Mineral
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
mineral
Peridot (Olivine)
Magnesium Iron Silicate (Mg, Fe)2SiO4
mineral
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Hematite (Tumbled)
Iron(III) oxide (Fe2O3)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Blue Apatite
Chlorapatite / Fluorapatite (Ca5(PO4)3(F,Cl,OH))
mineral
Ruby (in jewelry)
Corundum (Al2O3 with Chromium traces)
mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Aventurine
Aventurine Quartz (SiO2 with inclusions)
Mineral
Blue Quartzite
Blue Quartzite (Primary mineral: Quartz, SiO2 with magnesio-riebeckite or crocidolite inclusions)
metamorphic
Dumortierite Quartz
Al7BO3(SiO4)3O3 (inclusion in SiO2)
mineral
Fluorite
Fluoride (Calcium Fluoride - CaF2)
mineral
Kyanite (Purple variety)
Kyanite (Al₂SiO₅)
metamorphic
Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Calcite
Calcium Carbonate (CaCO3)
mineral
Fluorite, Turquoise, and Calcite set
Calcium Fluoride (CaF2), Hydrous Phosphate of Copper and Aluminum (CuAl6(PO4)4(OH)8·4H2O), Calcium Carbonate (CaCO3)
mineral
Greenstone
Metabasalt / Metamorphosed Igneous Rock
metamorphic