Gold and gypsum, Lake Yindarlgooda, WACollection Highlights | Updated 5 months ago Gold and gypsum (3.1 cm long), Lake Yindarlgooda near Bulong, Western Australia. WA Museum This beautiful specimen of gold with gypsum, 3.1 cm long, was found by metal detecting in Lake Yindarlgooda, near Bulong, Western Australia. The crystals of gypsum grew from the saline waters of the lake to form this rare association. In the salt-lake environment, gold was dissolved and reprecipitated, shaping the surfaces of this specimen. Mineral Collection