White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Category
Igneous And Sedimentary Mixture
Browse igneous and sedimentary mixture specimens identified by the Rock Identifier community.
Gneiss with Quartz Veining
Gneiss (High-grade regional metamorphic rock)
metamorphic
Gneiss (Banded Gneiss)
Gneiss
metamorphic
Pyrite
Iron Sulfide (FeS2)
mineral
Biotite (Black Mica)
Biotite (K(Mg,Fe)3AlSi3O10(OH)2)
mineral
Banded Agate (Jasper-Agate)
Silicon Dioxide (SiO₂)
Mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Magnetite (Lodestone variety)
Magnetite (Iron(II,III) oxide, Fe3O4)
mineral
Quartz (Milky/Common variant)
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Schist (specifically Chlorite/Greenschist)
Chlorite Schist
metamorphic
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite on Quartz
Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Carnelian Agate
Chalcedony (SiO2) with iron oxide inclusions
mineral
Agate Geode
Chalcedony (cryptocrystalline SiO2)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Magnetite / Ironstone
Magnetite (Fe3O4)
mineral
Quartz with Iron Stains
Quartz (SiO2) with iron oxide/hydroxide staining
Mineral
Mica
Phlogopite or Biotite group (KMg3(AlSi3O10)(F,OH)2 / K(Mg,Fe)3AlSi3O10(OH)2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Bloodstone Jasper (Heliotrope)
SiO2 (Silicon Dioxide) - Cryptocrystalline Quartz
sedimentary
Quartz
Quartz (SiO₂)
Mineral
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Yellow Chalcedony (Agate Pebble)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Gneiss
Gneiss
metamorphic
Blue Calcite (commonly sold as Caribbean Calcite)
Calcium Carbonate (CaCO3)
mineral
Specular Hematite (Specularite)
Iron Oxide (Fe2O3)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Blue Chalcedony
Microcrystalline Quartz (SiO2)
mineral
River Cobble (Salt and Pepper Gneiss)
Gneiss (High-grade regional metamorphic rock)
metamorphic
Clear Quartz Crystal
Quartz (Silicon Dioxide, SiO2)
mineral
Gneiss
Gneiss
metamorphic
Gneiss
Gneiss
metamorphic
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
White Agate (Chalcedony)
Silicon Dioxide (SiO2)
mineral