Ferruginous Quartz (Iron-stained Quartz)
Silicon Dioxide (SiO2) with Iron Oxide inclusions (Fe2O3)
mineral
Category
Sedimentary Or Igneous Associated Mineral
Browse sedimentary or igneous associated mineral specimens identified by the Rock Identifier community.
Epidote
Epidote; Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
mineral
Chalcedony (Agate)
Cryptocrystalline Quartz (SiO2)
mineral
Quartz (Milky or Druzy Quartz)
Silicon Dioxide (SiO2)
mineral
White Agate (Chalcedony)
Agate (Silicon Dioxide - SiO2)
mineral
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
mineral
Banded Agate (Pink Chalcedony)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
White Quartz Pebbles
Quartz (Silicon Dioxide, SiO2)
Mineral
Quartz (Milky or Cloudy Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Aquamarine
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Blue Lace Agate
Silicon Dioxide (SiO₂)
sedimentary
Hematite
Iron (III) Oxide, Fe2O3
Mineral
Quartz (Milky/Vein Quartz)
Silicon Dioxide (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Yellow Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Hematite
Iron(III) oxide (Fe2O3)
Mineral
Banded Agate
Chalcedony (Silicon Dioxide, SiO2)
mineral
Gneiss (with Quartz-Feldspar vein)
Gneiss (high-grade metamorphic rock) containing Quartz (SiO2) and Feldspar (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8)
metamorphic
Amethyst
Amethyst (Silicon Dioxide - SiO2 with iron impurities)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Dalmatian Jasper (Dalmatian Stone)
Dalmatian Stone (primarily Feldspar, Quartz, and Arfvedsonite/Tourmaline)
igneous
Agate
Silicon dioxide (SiO2)
mineral
Rough Diamond
Diamond (pure Carbon, C)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Gneiss
Gneiss
metamorphic
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Gneiss (with Quartz and Biotite Mica)
Gneiss
metamorphic
Amphibolite (specifically Hornblende Schist/Gneiss)
Amphibole-rich Metamorphic Rock
metamorphic
Tanzanite
Blue Zoisite (Ca2Al3(SiO4)(Si2O7)O(OH))
mineral
Jadeite (Jade)
Jadeite; NaAlSi2O6
metamorphic
Tiger's Eye
Quartz (SiO2) with fibrous inclusions of Altered Crocidolite
mineral
Rhodonite in Quartz Matrix
Rhodonite (Manganese Iron Magnesium Calcium Silicate - Mn,Fe,Mg,Ca)SiO3
mineral
Blue Lace Agate
Chalcedony (a form of Quartz) - SiO2
Mineral
Water and Silt (Sedimentary Environment)
Suspended Sediment / H2O (dihydrogen monoxide)
sedimentary
Quartz / Quartzite
Quartz (Silicon Dioxide, SiO2)
metamorphic
Yellow Chalcedony (Agate Pebble)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral