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Crystallography
https://australian.museum/learn/minerals/what-are-minerals/crystallography/Minerals can be identified by the shape of their crystals: called crystallography. External crystallography measures the outside properties of crystals such as length of crystal surfaces and the angles between these surfaces.
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Tektites
https://australian.museum/learn/minerals/shaping-earth/tektites/Tektites are small, pebble-like glassy objects of Earth material that have been melted by meteorite impact, splashed up into our atmosphere, and fallen to Earth again under gravity.
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Meteors and Meteorites
https://australian.museum/learn/minerals/shaping-earth/meteors-and-meteorites/Solid pieces of extraterrestrial debris (meteoroids) can stray from their orbits in outer space and be captured by Earth's gravity.
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Classification of sedimentary rocks
https://australian.museum/learn/minerals/shaping-earth/classification-of-sedimentary-rocks/Sedimentary rocks are classified according to the predominant grain size present, as well as by their mineral content.
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Azurite on Cerussite
https://australian.museum/learn/minerals/mineral-factsheets/azurite-on-cerussite/This beautiful specimen contains the largest Broken Hill azurite crystal in our collection.
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Molybdenite on quartz
https://australian.museum/learn/minerals/mineral-factsheets/molybdenite-on-quartz/With its large, curved, silvery, flexible and metallic crystal flakes scattered over quartz crystals in an aesthetic arrangement, this is the best molybdenite (molybdenum sulphide) specimen of its type in the world.
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Maitland Bar Gold Nugget
https://australian.museum/learn/minerals/mineral-factsheets/maitland-bar-gold-nugget/The Maitland Bar gold nugget has a value far beyond its gold content.
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Calcite Crystals
https://australian.museum/learn/minerals/mineral-factsheets/calcite-crystals/This attractive and impressive group of large and transparent scalenohedral or ‘dog-tooth’ calcite crystals is from a pool in Cliefden Caves.
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Gold on Quartz
https://australian.museum/learn/minerals/mineral-factsheets/gold-on-quartz/Gold always has instant appeal, and this photogenic specimen certainly attracts attention.
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Opal ‘Pineapple’
https://australian.museum/learn/minerals/mineral-factsheets/opal-pineapple/This opal ‘pineapple’ has nothing to do with the fruit – the term is only a visual description. The opal is made of silicon dioxide with water.
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Burra
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Minerals
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