Geology and Minerals
Ambae, also known as Aoba, Omba, Oba, or Opa and formerly Lepers’ Island, is an island in the South Pacific island nation of Vanuatu, approximately 310 kilometres (165 nautical miles) north-northwest of Vanuatu's capital city, Port Vila. It is also Vanuatu's largest active volcano.
Alluvial fan.
Herkimer diamond.
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