Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
Category
Browse mineral (found in igneous and metamorphic rocks) specimens identified by the Rock Identifier community.
Quartzite Pebble
Metamorphosed Quartz Sandstone (SiO2)
Amethyst
Amethyst (Silicon Dioxide, SiO2 with Iron impurities)
Banded Agate (Chert/Chaldcedony)
Silicon Dioxide (SiO₂)
Raw Emerald in Schist Matrix
Beryl (Be3Al2Si6O18) in Mica Schist
Labradorite
Labradorite (Ca,Na)(Al,Si)4O8
Carnelian Agate
Silicon Dioxide (SiO2) with iron oxide impurities
Chalcedony (Quartz Var.)
Silicon Dioxide (SiO2)
Tiger's Eye (Rough)
Pseudomorph of Quartz after Crocidolite (SiO2 with Iron inclusions)
Granodiorite (or Granite) Pebble
Phaneritic Felsic Igneous Pebble
Schist
Lepidoblastic Mica Schist
Moss Agate
Chalcedony (SiO2) with inclusions of manganese or iron oxides
Seraphinite
Clinochlore (a variety of the chlorite group)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Carnelian
SiO2 (Microcrystalline Quartz / Chalcedony)
Peridot
Olivine ((Mg, Fe)2SiO4)
Chalcedony (Moonstone variant or White Agate)
Silicon Dioxide (SiO₂)
Kyanite (Blue or Blue-Grey)
Kyanite (Al2SiO5)
Moss Agate
Silicon Dioxide with inclusions (SiO2 + Mn/Fe oxides)
Marble
Recrystallized Carbonate Rock (CaCO3)
Amethyst
Silicon Dioxide (SiO2) with trivalent iron (Fe3+) impurities
Carnelian (Chalcedony)
Silicon Dioxide (SiO2)
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
Blue Lace Agate
Silicon Dioxide (SiO₂), a variety of Chalcedony
Almandine Garnet (weathered)
Almandine (Fe3Al2(SiO4)3)
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
Ferruginous Quartz (Iron-stained Quartz)
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
Unakite
Epidotized Granite
Quartzite with Chlorite/Epidote
Metamorphosed Quartzite (SiO2)
Gold Placer (Gold Flakes and Nuggets)
Native Gold (Au)
Fluorite
Calcium Fluoride (CaF2)
Dumortierite Quartz
Dumortierite (Al7BCuO15)
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
Gold (Processed)
Gold (Au)
Nephrite Jade
Nephrite (a variety of the Calcium magnesium iron silicate mineral series Actinolite), Ca2(Mg, Fe)5Si8O22(OH)2
Milky Quartz
Silicon Dioxide (SiO2)
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)
Milky Quartz
Silicon Dioxide (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Raw Citrine (Yellow Quartz)
Citrine / Silicon Dioxide (SiO2)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Quartz (Druzy/Macro-crystalline)
Silicon Dioxide (SiO2)
Rhodochrosite
Manganese carbonate (MnCO3)