Pegmatite
Igneous Pegmatite
igneous
Category
Mineral Like Byproduct (Technogenic)
Browse mineral like byproduct (technogenic) specimens identified by the Rock Identifier community.
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Pegmatite (Granitic) with Tourmaline
Granitic Pegmatite (containing Schorl and Quartz)
igneous
Lepidolite
K(Li,Al)3(Al,Si,V)4O10(F,OH)2
mineral
Sandstone
Clastic Sedimentary Rock
sedimentary
Goldstone
Man-made glass infused with copper particles
gemstone
Mica Schist
Schist
metamorphic
Limonite
Limonite (Hydrous iron oxides, predominantly Goethite FeO(OH)·nH2O)
mineral
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Geode (Calcite or Quartz)
Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3)
sedimentary
Seashell Fossil
Mollusca fossil
fossil
Fossilized Shell
Invertebrate fossil (phylum Mollusca)
fossil
Chert Nodule or Concretion
Microcrystalline Quartz / Sedimentary Nodule
sedimentary
Lepidolite
K(Li,Al)3(Al,Si,3O10)(F,OH)2
mineral
Granite
Intrusive igneous rock
igneous
Limonite
Hydrated iron oxide-hydroxide, FeO(OH)·nH2O
mineral
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Green Garden Quartz (Phantom Quartz)
Silicon Dioxide (SiO2) with Chlorite inclusions
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Granite Pebble
Phaneritic intrusive igneous rock
igneous
Dendritic Agate
Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions
mineral
Limonite
FeO(OH)•nH2O
mineral
Limonite
FeO(OH)•nH2O
mineral
Granite
Granite (Plutonic Igneous Rock)
igneous
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(F,OH)2)
mineral
Aventurine
Quartz with fuchsite inclusions (SiO2)
mineral
Epidote
Epidote Group (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
metamorphic
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lithium-bearing mica)
mineral
Mixed River Pebbles (Jasper, Hematite, and Quartzites)
Silicon dioxide (Jasper/Quartz) and Iron oxide (Hematite)
sedimentary
Sandstone
Arenite
sedimentary
Copper Ore / Altered Granodiorite
Cupriferous rock with silicate gangue
mineral
Pegmatite (with Muscovite Mica and Quartz)
Granitic Pegmatite (chiefly KAlSi3O8, SiO2, and KAl2(AlSi3O10)(OH)2)
igneous
Ruby
Corundum (Aluminium Oxide with Chromium impurities, Al2O3:Cr)
mineral
Sphalerite
Zinc sulfide (Zn, Fe)S
mineral
Lepidolite
K(Li,Al)3(Al,Si,3O10)(F,OH)2
mineral
Petrified Wood
Silicified wood (SiO2)
fossil
Gneiss
Gneiss
metamorphic
Sandstone
Arenite (SiO2 based typically)
sedimentary
Chrysocolla
Hydrated copper phyllosilicate, (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Granite
Felsic intrusive igneous rock
igneous
Granitic Pegmatite
Pegmatitic Granite
igneous