Petalite PlCity of Armadale » Mount RichonDo you (or did you) live on Petalite Pl in Mount Richon, WA? How has Petalite Pl changed over the years? What was Petalite Pl like in the early days? Who were the original residents of Petalite Pl? Ask a question or tell your story below... April 17, 2017 by PerthMETRO.net zoom out · satellite view · hybrid (zoom out) Rate this street If you would like to be a custodian/moderator of Petalite Pl, please contact us.