Geologic Occurrence
Wadsleyite was found in Peace River meteorite in Peace River, Alberta, Canada. This meteorite, an L6 hypersthene-olivine chrondite, is believed to have formed at high pressure during an extraterrestrial shock event. It occurs as microcrystalline rock fragments, often not surpassing 0.5 millimetres (0.020 in) in diameter, that pseudomorph pre-existing olivine parts within the mineral.(Price, Putnis, Agrell and Smith, 1983) The meteor or asteroid that impacted the earth generated the mineral phase transformations observed in shocked chrondites of the Peace River meteorite.(Beck, Gillet, Jahn, McMillan, Reynard, Van De Moortele and Wilson, 2007) It contains sulfide-rich veins of olivine and is believed, like other meteorite specimens, to have undergone a shock event, causing the grain components of olivine to transform into significant amounts of high-density wadsleyite.(Price, Putnis, Agrell and Smith, 1983)
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