Blue Quartz with Graphite/Tourmaline Inclusions
Silicon Dioxide (SiO2) with Carbon (C) or Schorl elements
mineral
Category
Metamorphic Rock (Composed Of Multiple Minerals)
Browse metamorphic rock (composed of multiple minerals) specimens identified by the Rock Identifier community.
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Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Quartz (Silicon Dioxide, SiO2)
mineral
Amygdaloidal Basalt
Amygdaloidal Basalt with Secondary Infilling (e.g., Agate, Quartz, or Zeolite)
igneous
River Quartz Pitting/Cobble
Silicon Dioxide (SiO2)
mineral
Chrome Diopside
Magnesium Calcium Silicate (MgCaSi2O6) containing Chromium impurities
mineral
Milky Quartz on Matrix
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz with Fuchsite (or Chlorite)
SiO2 (Silicon Dioxide) with K(Al,Cr)2(AlSi3O10)(OH)2 (Fuchsite)
mineral
Moonstone with Black Tourmaline (Spiderweb Moonstone)
Feldspar (KAlSi3O8) with Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Gneiss
Gneiss
metamorphic
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Blue Apatite
Apatite (Ca5(PO4)3(F,Cl,OH))
mineral
White Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Lepidolite in Quartz (Obelisk)
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lepidolite)
metamorphic
Sandstone
Sandstone (clastic sedimentary rock)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Orthoclase Feldspar
Potassium aluminum silicate (KAlSi3O8)
mineral
Red Sandstone (Iron-stained)
Clastic sedimentary rock (primarily Quartz with Iron Oxides)
sedimentary
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz Veined Diorite or Basalt
Crystalline Silicon Dioxide (Quartz) in Mafic Igneous Host (Basalt/Diorite)
igneous
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Chert (Flint Pebbles)
Microcrystalline Quartz (SiO2)
sedimentary
Granite
Granite (phaneitic intrusive igneous rock)
igneous
Jadeite (Jade)
Jadeite; NaAlSi2O6
metamorphic
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Tiger's Eye
Pseudomorph of quartz after crocidolite (SiO2)
metamorphic
Green Aventurine (Green Quartzite)
Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Chalcedony (Agate)
Cryptocrystalline Quartz (SiO2)
mineral
Granite
Phaneritic Plutonic Felsic Rock (SiO2, KAlSi3O8, NaAlSi3O8, CaAl2Si2O8)
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Ruby
Corundum (Al2O3)
mineral
Olivine/Peridot
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Greenstone
Greenschist
metamorphic
Greenstone
Metabasalt (Greenstone facies)
metamorphic
Geode with Quartz Crystal Cavity
Silicon Dioxide (SiO2) in Calcareous/Siliceous Matrix
sedimentary
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Gneiss
Metamorphic Gneiss (High-grade regional metamorphism)
metamorphic
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Rough Emerald/Green Beryl
Beryl (Be3Al2(SiO3)6) with trace amounts of Chromium or Vanadium
mineral
Dalmatian Jasper
Aplite with Arfvedsonite inclusions
igneous
Lapis Lazuli
Lapis lazuli (Mainly Lazurite: Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
metamorphic
Quartz Geode (likely within Limestone or Dolomite matrix)
Quartz (SiO₂)
Mineral within a Sedimentary Rock