Iolite (Cordierite)
Magnesium Iron Aluminum Silicate (Mg,Fe)2Al4Si5O18
mineral
Category
Mineral Like (Anthropogenic)
Browse mineral like (anthropogenic) specimens identified by the Rock Identifier community.
Learn about Mineral Like (Anthropogenic) in the encyclopedia
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Milky Quartz
Silicon Dioxide (SiO2)
mineral
Potassium Feldspar (Orthoclase)
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Rutilated Quartz
Silicon Dioxide with Titanium Dioxide (SiO2 with TiO2 inclusions)
mineral
Turquoise
Hydrated copper and aluminum phosphate (CuAl6(PO4)4(OH)8·4H2O)
mineral
Optical Calcite (Iceland Spar)
Calcite (Calcium Carbonate, CaCO3)
mineral
Limonite with Hematite
Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)
mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Fire Quartz (Hematoid Quartz)
Silicon Dioxide with Hematite Inclusions (SiO2)
gemstone
Drupa Quartz (Sparkly Drusy Quartz on Matrix)
Crystalline Silicon Dioxide (SiO2) on host rock
mineral
Granite
Granite
igneous
Chert (Chert / Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Granodiorite
Phaneritic intrusive igneous rock
igneous
Granite
Felsic intrusive igneous rock
igneous
Pink Granite
Felsic intrusive igneous rock
igneous
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Schist with Quartz Veins
Schist with Quartz (SiO2)
metamorphic
Jasper with Quartz inclusion
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
mineral
Gneiss (Cobble)
Gneiss
metamorphic
Quartzite with Mica / Gneiss Pebble
Metamorphic Rock (Quartz-Feldspar-Mica aggregate)
metamorphic
Granitic Pegmatite with Schorl
Granitic Pegmatite (Schorl: NaFe3Al6(Si6O18)(BO3)3(OH)3OH)
igneous
Amethyst and Green Aventurine (Tumbled Gemstones set in a wand)
Quartz (SiO2) varieties - Amethyst and Aventurine
gemstone
Chakra Stone Tower (Composite Multi-Mineral)
Crystalline Silicon Dioxide composite (SiO2) with various inclusions
mineral
Chert (Cream Variety)
Microcrystalline silica (SiO2)
sedimentary
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
sedimentary
Septarian Pebble
Septarian nodule / Concretion
sedimentary
Nephrite Jade
Ca2(Mg, Fe)5Si8O22(OH)2
metamorphic
Limonite Concretion
Limonite (FeO(OH)·nH2O)
sedimentary
Quartz (Milky or Iron-Stained)
Silicon Dioxide (SiO2)
mineral
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic volcanic rock)
igneous
Blue Quartzite (Aventurine variety)
Silicon Dioxide (SiO2) with inclusions of Dumortierite or Magnesio-riebeckite
metamorphic
Quartz Geode
Silicon Dioxide (SiO2)
sedimentary
Yellow Quartz
Silicon Dioxide (SiO2)
mineral
Polished green moss agate cabochon
Moss agate: microcrystalline quartz (SiO₂) with included chlorite/actinolite or iron-manganese minerals
mineral
Green Aventurine
Quartz (SiO2) with fuchsite inclusions
mineral
Opalite
Synthetic Glass / Man-made Opal Simulant
gemstone
Muscovite Schist
Muscovite Schist (KAl2(AlSi3O10)(OH)2 matrix)
metamorphic
Amber
Succinate (Fossilized Tree Resin)
mineraloid
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Jasper with Dendritic Inclusions
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Amber
Succinate (Succinite for Baltic varieties)
mineraloid