Mongolata, South Australia
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Mongolata is a rural locality in the Mid North region of South Australia, situated in the Regional Council of Goyder. The modern locality was established in August 2000, when boundaries were formalise
CSIRO Science Image 4228 Old mine adit at the abandoned Mongolata Goldfield 30km northeast of Burra in South Australia 1989
View towards mine workings of the Mongolata goldfield
Native gold on goethite from the Mongolata goldfield
Pseudomorph
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In mineralogy, a pseudomorph is a mineral or mineral compound that appears in an atypical form, resulting from a substitution process in which the appearance and dimensions remain constant, but the or
Mongolata, South Australia
…almost entirely extracted from a stockwork-type mineralisation within the Neoproterozoic Cox sandstone. The quartz veins are rich in goethite, often pseudomorph after siderite. Native gold is mostly associated with goethite. Alluvial mining along the range front of the Mongolata goldfield remained largely…
Pseudomorph of goethite after pyrite
Silica pseudomorph after gypsum crystals and silicified serpulid polychaete tubes
Native copper pseudomorph after aragonite, with red cuprite and green malachite alteration
Cubic crystals of argentite transformed into acanthite (monoclinic), without any external visible change. Specimen from the San Juan de Rayas Mine, Guanajuato, Mexico. 3 cm.