Botryoidal Chalcedony / Quartz
Silicon Dioxide (SiO2)
mineral
Category
Mineral Pseudomorph
Browse mineral pseudomorph specimens identified by the Rock Identifier community.
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Quartz (Rose Quartz or Chert variant)
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Granite with Tourmaline
Felsic intrusive igneous rock containing schorl (tourmaline)
igneous
Tumbled Rose Quartz
Quartz (Silicon Dioxide, SiO2 with trace amounts of titanium, iron, or manganese)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Limonite
FeO(OH)·nH2O
mineral
Quartz Geode
Silicon Dioxide (SiO2)
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
gemstone
Pink Calcite
Calcium Carbonate (CaCO3)
mineral
Prehnite
Prehnite, Ca2Al2Si3O10(OH)2
mineral
Yellow Jasper
Silicon Dioxide (Microcrystalline Quartz), SiO2
sedimentary
Sodalite
Na4Al3(SiO4)3Cl (Sodium Aluminum Silicate Chloride)
mineral
Chrysoprase-bearing Quartz
Silicon Dioxide with Nickel Inclusions (SiO2)
mineral
Blue Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Amethyst
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz in Matrix
Silicon Dioxide (SiO2) in host rock matrix
mineral
Green Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Quartz Geode
Silicon Dioxide (SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Epidote
Epidote (Ca2(Al, Fe)3(SiO4)3(OH))
mineral
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Rose Quartz and Pegmatite
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Quartz Vug / Druzy Quartz
Silicon Dioxide (SiO2)
mineral
Amethyst
Quartz (Silicon Dioxide, SiO2)
gemstone
Epidote with Quartz Vein
Epidote-bearing metamorphic rock with quartz (Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite in Quartz
Iron Sulfide (FeS2) in Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Aquamarine
Beryl (Be3Al2(SiO3)6)
gemstone
Amethyst
Quartz (SiO2)
gemstone
Quartz with Mica/Schist inclusion
Silicon Dioxide (SiO2) with Phyllosilicates
mineral
Sunstone
Plagioclase Feldspar (Na,Ca)(Si,Al)3O8
mineral
Titanium Quartz (Aura Quartz)
Silicon Dioxide (SiO2) treated with Titanium
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Amethyst Quartz Crystal
Silicon Dioxide (SiO2) with iron impurities
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
sedimentary
Quartz Geode (Amethyst / Clear Quartz)
Silicon Dioxide (SiO2)
mineral
Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
gemstone