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Silver with Acanthite
https://australian.museum/learn/minerals/mineral-factsheets/silver-with-acanthite/This magnificent twisted crystalline wire silver with acanthite (silver sulphide) is from the classic old locality of Kongsberg, Norway.
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Anglesite
https://australian.museum/learn/minerals/mineral-factsheets/anglesite/Transparent, large and flawless anglesite crystals are rare, and some crystals from the Toussit Mine have been of sufficient quality for cutting beautiful faceted gems.
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Wulfenite
https://australian.museum/learn/minerals/mineral-factsheets/wulfenite-mexico/This grouping of red-orange blockshaped crystals is a fine example of this form of wulfenite and the reason why so many people refer to these crystals as caramel sweets.
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Diorite
https://australian.museum/learn/minerals/mineral-factsheets/diorite/This small piece of diorite, an igneous rock, may appear unpretentious, but it has an incredible history.
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‘Dinosaur’ Gold Nugget
https://australian.museum/learn/minerals/mineral-factsheets/dinosaur-gold-nugget/This gold nugget, worn smooth by the action of water, has an uncanny resemblance to a prehistoric reptile, and has been called the ‘Dinosaur’ gold nugget.
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The Sydney Basin
https://australian.museum/learn/minerals/shaping-earth/the-sydney-basin/The Sydney Basin is a major structural basin containing a thick Permian-Triassic (290 Ma - 200 Ma (million years old)) sedimentary sequence that is part of the much larger Sydney-Gunnedah-Bowen Basin.
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Water and sedimentary transport
https://australian.museum/learn/minerals/shaping-earth/water-and-sedimentary-processes/Water plays a vital role in most sedimentary processes. Pure water itself has little effect on rocks. It is the dissolved gases in water, particularly carbon dioxide, that cause the chemical decay of minerals and mineral dissolution.
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Radioactive dating
https://australian.museum/learn/minerals/shaping-earth/radioactive-dating/Radioactive dating is a method of dating rocks and minerals using radioactive isotopes. This method is useful for igneous and metamorphic rocks, which cannot be dated by the stratigraphic correlation method used for sedimentary rocks.
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Pyroclastic processes and materials
https://australian.museum/learn/dinosaurs/pyroclastic-processes-and-materials/Pyroclastic means 'fire broken' and is the term for rocks formed from fragments produced by volcanic explosions.
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Identifying gemstones
https://australian.museum/learn/minerals/gemstones/identifying-gemstones/Cut gemstones possess all the physical properties of the mineral from which they are cut, although the crystal shape is no longer evident.
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Machu Picchu and the Golden Empires of Peru
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Tails from the Coasts
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Wild Planet
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Minerals
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