Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Category
Metamorphic And Igneous Rocks
Browse metamorphic and igneous rocks specimens identified by the Rock Identifier community.
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Prehnite
Ca2Al(AlSi3O10)(OH)2
mineral
Galena
Lead Sulfide (PbS)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Citrine Quartz
Silicon Dioxide (SiO2) with iron impurities
gemstone
Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Pyrite (FeS2)
mineral
Blue Apatite
Fluorapatite / Apatite Group (Ca5(PO4)3(F,Cl,OH))
mineral
Quartz (Iron-stained Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Snow)
Silicon Dioxide (SiO2)
mineral
Blue Apatite
Fluoroapatite (Ca5(PO4)3F)
mineral
Pyrite Nodules / Weathered Pyrite
Iron Sulfide (FeS2)
mineral
Epidote with quartz/feldspar
Epidote, Ca2(Al,Fe)3(SiO4)3(OH)
metamorphic
Epidote
Calcium aluminum iron silicate (Ca2(Al, Fe)3(SiO4)3(OH))
mineral
Fuchsite (Green Muscovite / Mica Schist)
Chromian Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Fluorite
Calcium Fluoride (CaF2)
mineral
Plagioclase Feldspar (specifically Albite/Oligoclase)
(Na,Ca)(Si,Al)4O8
mineral
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Iolite (Cordierite)
Cordierite (Magnesium Aluminum Silicate), Mg2Al4Si5O18
Mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Apatite
Fluorapatite, Chlorapatite, and Hydroxylapatite (Ca5(PO4)3(F,Cl,OH))
mineral
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
mineral
Milky Quartz with Iron Inclusions
Silicon Dioxide (SiO2)
mineral
Quartz (Moss-covered)
Silicon Dioxide (SiO2)
mineral
Pink Garnet (likely Almandine or Rhodolite)
Garnet Group (Fe3Al2(SiO4)3 to Mg3Al2(SiO4)3)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Crystal Cluster / Quartzite
Silicon Dioxide (SiO2)
mineral
Quartz (Orange/Pink variety)
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Faceted)
Silicon Dioxide (SiO2)
gemstone
Clear Quartz (Cut/Faceted Gemstone)
Silicon Dioxide (SiO2)
gemstone
Yellow Quartz (Citrine Quartz / Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Serpentine
Serpentine group ((Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al)2O5(OH)4)
metamorphic
Quartz (Milky Quartz / Quartz Specimen)
Silicon Dioxide (SiO2)
mineral
Quartz Crystal (Citrine / Golden Quartz)
Silicon Dioxide (SiO2)
mineral
Serpentine (Serpentinite)
Serpentine group ((Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al)2O5(OH)4)
metamorphic
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Green Tourmaline (Verdelite) / Actinolite
Tourmaline group: Na(Mg,Fe,Li,Al,Mn)3Al6(BO3)3Si6O18(OH)4 / Actinolite: Ca2(Mg,Fe)5Si8O22(OH)2
mineral
Quartz Boulder
Silicon Dioxide (SiO2)
mineral
Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Tumbled Quartz
Silicon Dioxide (SiO2)
mineral
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary