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Sedimentary processes
https://australian.museum/learn/minerals/shaping-earth/sedimentary-processes/Sediments are formed by the breakdown (both physical and chemical) of pre-existing rocks, which may be of igneous, metamorphic or sedimentary origin.
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Pyromorphite
https://australian.museum/learn/minerals/mineral-factsheets/pyromorphite/Pyromorphite (lead chloro-phosphate) was a common mineral of the oxidised zone of the Broken Hill orebody, and exceptional specimens of various crystal forms and colours were found.
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Anglesite on Cerussite
https://australian.museum/learn/minerals/mineral-factsheets/Anglesite-on-cerussite/This reticulated cerussite (lead carbonate) has a sugar-like coating of anglesite (lead sulphate).
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Banded Iron Formation
https://australian.museum/learn/minerals/mineral-factsheets/banded-iron-formation/Weighing a whopping 437 kg, this spectacular specimen is part of the Archean Nimingarra Formation of Western Australia and illustrates a dramatic change in Earth’s past atmospheric conditions.
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Oxidised zone copper minerals
https://australian.museum/learn/minerals/mineral-factsheets/oxidised-zone-copper-minerals/This stunning polished slice of blue chrysocolla (copper silicate with water), green malachite (copper hydroxy-carbonate) and brown ironoxide- stained jasper (silicon dioxide) is from the DeGrussa Copper-Gold Mine in the Pilbara Block of Western Australia.
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Topaz
https://australian.museum/learn/minerals/mineral-factsheets/topaz/This is a ‘Rembrandt of the mineral world’ – one of the world’s finest mineral specimens.
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Nephrite jade carving 'nurse with goats'
https://australian.museum/learn/minerals/mineral-factsheets/nephrite-jade-carving/Several mineral species are referred to as ‘jade’. However, ‘true jade’ or ‘precious jade’ is the mineral jadeite, a sodium alumino-silicate, formed under high pressure deep down in the Earth.
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Vanadinite on baryte
https://australian.museum/learn/minerals/mineral-factsheets/vanadinite-on-baryte/This specimen was purchased from Albert Chapman who bought it at the 1980 Tucson Gem and Mineral Show in the USA.
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Chalcedony with Chrysocolla
https://australian.museum/learn/minerals/mineral-factsheets/chalcedony-with-chrysocolla/These smooth, round masses of chalcedony with dispersed sky-blue copper silicate mineral chrysocolla line a cavity in oxidised copper ore.
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Quartz (Amethyst)
https://australian.museum/learn/minerals/mineral-factsheets/quartz-amethyst/These sharp, lustrous and transparent purple amethyst crystals are a variety of quartz.
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Thin Ice VR
Special exhibition
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2023 Australian Geographic Nature Photographer of the Year
Special exhibition
Now on