Yellow Chalcedony (Quartz Pebble)
Silicon Dioxide (SiO2)
mineral
Category
Mineral Like Byproduct (Technogenic)
Browse mineral like byproduct (technogenic) specimens identified by the Rock Identifier community.
Learn about Mineral Like Byproduct (Technogenic) in the encyclopedia
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Bauxite
Bauxite (Al(OH)3, AlO(OH), AlOOH)
sedimentary
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Tyrannosaurus Rex Fossil Skull
Tyrannosaurus rex
fossil
Potassium Feldspar (Orthoclase)
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Obsidian
Obsidian (Volcanic Glass, ~70% SiO2)
igneous
Plume Agate
Silicon Dioxide (SiO2) - Chalcedony Variety
mineral
Greenstone / Greenschist
Chlorite schist / Meta-basalt
metamorphic
Gastropod Fossil
Class Gastropoda
fossil
Fossilized Shark Tooth
Elasmobranchii (Class) fossil
fossil
Biotite Granite
Phaneritic Felsic Igneous Rock
igneous
Orange Quartz with Epidote
Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate hydroxide (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH))
mineral
Mixed Tumbled Rocks and Minerals Collection
Mixed Minerals and Rocks (Quartz, Feldspar, Jasper, Agate, Lapis Lazuli, Sodalite, Rose Quartz, Fluorite, etc.)
mineral
Sandstone
Arenite
sedimentary
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
mineral
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
mineral
Petrified Wood
Silicified Wood (primarily SiO2)
mineral
Obsidian
Obsidian (Volcanic Glass, SiO2 + impurities)
igneous
Polished dendritic agate pebble
Chalcedony (microcrystalline SiO₂) with dark manganese- or iron-oxide dendrites
mineral
Limonite
FeO(OH)•nH2O
mineral
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
mineral
Dalmatian Jasper
Microcrystalline Quartz with Arfvedsonite/Tourmaline inclusions
igneous
Fire Quartz (Hematoid Quartz)
Silicon Dioxide with Hematite Inclusions (SiO2)
gemstone
Rhodonite
Rhodonite (Mn,Fe,Mg,Ca)SiO3
mineral
Granite
Felsic intrusive igneous rock
igneous
Desert Rose
Gypsum rosette (CaSO4·2H2O) or Barite rosette (BaSO4)
mineral
Schist
Mica Schist
metamorphic
Limonite or Goethite (Ironstone)
Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)
mineral
Mocha Stone (Dendritic Agate)
Silicon Dioxide (SiO2) with Manganese/Iron inclusions
sedimentary
Green Fluorite
Fluorite (Calcium Fluoride - CaF2)
mineral
Granitic Pegmatite
Pegmatite (Quartz: SiO2, Feldspar: KAlSi3O8, Mica: KAl2(AlSi3O10)(OH)2)
Igneous
Fossilized Gastropod
Gastropoda
fossil
Dalmation Jasper
Perthitic Feldspar with Arfvedsonite inclusions
igneous
Chlorite (Small Flakes/Sand)
Chlorite Group (Magnesium Iron Aluminum Silicate Hydroxide - (Mg,Fe)3(Si,Al)4O10(OH)2·(Mg,Fe)3(OH)6)
mineral
Green Chert
Microcrystalline Quartz (SiO2)
sedimentary
Vanadinite
Lead Chlorovanadate - Pb5(VO4)3Cl
mineral
Petrified Wood
Silicified wood (SiO2)
sedimentary
Fossil Shark Tooth
Chondrichthyes (class); likely Lamniformes (order) fossilized in Apatite/Hydroxyapatite
fossil
Ironstone Nodule
Ferruginous Sandstone / Limonite Concretion
sedimentary
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
mineral
Green Aventurine
Silicon Dioxide (Quartz with Fuchsite inclusions) - SiO2
mineral
Limonite and Goethite
Limonite (hydrated iron(III) oxide-hydroxide) and Goethite (α-FeO(OH))
mineral