Blue Aventurine
Quartzite with inclusions of Dumortierite (SiO2 + Al7(BO3)(SiO4)3O3)
metamorphic
Category
Mineral Like Byproduct (Technogenic)
Browse mineral like byproduct (technogenic) specimens identified by the Rock Identifier community.
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Fossilized Shark Tooth
Carcharodon (Galeocerdo sp. or Lamniform)
mineral
Milky Quartz with Tourmaline
Silicon dioxide with schorl, SiO2
mineral
River Pebble
Quartzite pebble
sedimentary
Fluorite (Purple Fluorite Egg)
Fluorite (Calcium Fluoride, CaF2)
mineral
Dalmatian Jasper
Microgranular quartz with amphibole/tourmaline inclusions
igneous
Blue Quartz
Silicon Dioxide (SiO2) with fibrous inclusions (such as tourmaline, magnesio-riebbeckite, or crocidolite)
mineral
Geode (Unopened)
Silicon Dioxide (SiO2) in sedimentary host rock
sedimentary
Sunstone (Feldspar)
(Ca,Na)((Al,Si)2Si2O8) with inclusions of Hematite or Goethite
mineral
Spodumene
Spodumene (LiAl(SiO3)2)
mineral
Pegmatite
Granitic Pegmatite
igneous
Epidote and Quartz in Basalt Porpohyry
Epidote bearing Porphyritic Basalt with Quartz Veins
igneous
Quartz with Mafic Inclusions
Silicon Dioxide (SiO2) with host igneous matrix
igneous
Greenschist
Greenschist metamorphic rock (chlorite-epidote-actinolite-albite assemblage)
metamorphic
Coprolite
Fossilized Feces
fossil
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Plume Agate or Moss Agate
Agate (SiO2)
mineral
Aventurine Quartz
Silicon Dioxide (SiO2) with Fuchsite inclusions
metamorphic
Basalt with Amygdules
Amygdaloidal Basalt
igneous
Limonite/Goethite (Iron Ore)
Hydrous ferric oxides (FeO(OH)·nH2O)
mineral
Serpentinite
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4
metamorphic
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite mica
mineral
Shark Tooth Fossil
Chondrichthyes fossil
fossil
Rose Quartz
Silicon dioxide (SiO2)
mineral
Kaolinite (Kaolin)
Kaolinite (Al2Si2O5(OH)4)
mineral
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
mineral
Dendritic Agate
Silicon Dioxide (SiO2) with Manganese/Iron inclusions
mineral
Muscovite
KAl2(AlSi3O10)(OH)2
mineral
Obsidian
Volcanic Glass (predominantly SiO2)
igneous
Dendritic Agate
Dendritic Agate (Silicon Dioxide with Manganese or Iron Oxide inclusions, SiO2)
mineral
Muscovite Mica
KAl2(AlSi3O10)(OH)2
mineral
Schist
Mica Schist
metamorphic
Granite Pebble
Granite (Felsic Plutonic Rock)
igneous
Granite
Intrusive Igneous Rock
igneous
Basalt Porphyry
Porphyritic Basalt
igneous
Aventurine
Silicon Dioxide with Fuchsite inclusions (SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Blue Apatite
Fluorapatite / Apatite (Ca5(PO4)3(F,Cl,OH))
mineral
Sulfur on matrix
Native Sulfur (S8)
mineral
Sandstone
Sedimentary Rock (Quartz arenite)
sedimentary
Green Aventurine
Quartz (SiO2) with fuchsite inclusions
mineral
Obsidian
Volcanic Glass (predominantly SiO2)
igneous
Granite
Intrusive igneous rock (Acidic)
igneous