The limestone quarry near Aguathuna, situated on the Port-au-Port Peninsula along the west coast of Newfoundland, has gained prominence in recent decades for producing exceptional crystal specimens of baryte, calcite, and marcasite. Beyond its striking mineral finds, the site also offers a wealth of fascinating fossils, underscoring its geologically rich history.
One of the most intriguing features of the quarry is their preservation of fossilized marine life. Among these are specimens commonly referred to as "fossil tubes," believed to represent remnants of serpulid or spirorbid worms. These tubular structures are primarily replaced by limestone, though in some cases, their interiors are filled with calcite or baryte. In hollow sections of the tubes, well-formed micro crystals of baryte, calcite, and even small aggregates of brown sphalerite can develop, adding to the site's mineralogical allure.
For an in-depth report on this locality and its unique mineralization, visit our blog article: Baryte, Calcite, and Marcasite Mineralization at Aguathuna.
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