Quartz
Silicon Dioxide (SiO2)
mineral
Category
Mineral (Pseudomorph)
Browse mineral (pseudomorph) specimens identified by the Rock Identifier community.
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Quartz (Moss-covered)
Silicon Dioxide (SiO2)
mineral
Jasper or Agate
Silicon dioxide (SiO2)
Mineral
Sandstone (with potentially metamorphic or basaltic bands)
Arenite / Lithic Wacke
sedimentary
Quartz-Tourmaline Pebble
Quartz with Tourmaline inclusions
igneous
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Quartz Crystal Matrix
Silicon Dioxide (SiO2)
mineral
Clear Quartz Crystal
Silicon Dioxide (SiO2), Quartz
mineral
Ferruginous Quartz
Quartz (Silicon Dioxide, SiO2) with Iron Oxide Inclusions
mineral
Sunstone
Feldspar group (Plagioclase / Oligoclase)
mineral
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
gemstone
Jasper
Microcrystalline Quartz (SiO2) with impurities
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Lake Superior Agate
Silicon Dioxide (Chalcedony / Quartz, SiO2)
sedimentary
Moqui Marble
Hematite-Goethite Concretion
mineral
Quartz Geode Fragment
Silicon Dioxide (SiO2)
sedimentary
Lake Superior Agate
Silicon Dioxide (Chalcedony variety)
gemstone
Aquamarine
Beryl (Be3Al2(SiO3)6)
gemstone
Green Jasper
Microcrystalline Quartz (Chalcedony), SiO2
sedimentary
Moonstone
Orthoclase (Potassium Feldspar), (K,Na)AlSi3O8
mineral
Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Jasper
Silicon Dioxide (Microcrystalline Quartz, SiO2)
sedimentary
Peridot
Olivine ((Mg,Fe)2SiO4)
gemstone
Biotite Mica Schist
Metamorphic Rock containing Biotite K(Mg,Fe)3AlSi3O10(OH)2
metamorphic
Lepidolite in Quartz
K(Li,Al)3(Si,Al)4O10(F,OH)2 / SiO2
mineral
Quartz with Matrix
Silicon Dioxide (SiO2)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Quartz with Feldspar and Matrix
Silicon Dioxide (SiO2) with Potassium/Plagioclase Feldspar
mineral
Quartz Geode or Druzy Quartz on Matrix
Silicon Dioxide (SiO2)
mineral
Chevron Amethyst
Silicon Dioxide (Quartz variety), SiO2
mineral
Quartz Crystal Cluster / Quartzite
Silicon Dioxide (SiO2)
mineral
Yellow Quartz
Silicon Dioxide (SiO2)
mineral
Agate / Chalcedony
Silicon dioxide (SiO2)
mineral
Chalcedony
Silicon Dioxide (SiO2)
mineral
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Bloodstone
Chalcedony (Variety Heliotrope), SiO2
mineral
Amethyst
Silicon Dioxide (SiO2), Quartz variety
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz (Jasper / Chert)
Silicon Dioxide (SiO2)
sedimentary