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Chrysoprase results from the deep weathering or lateritization of nickeliferous serpentinites or other ultramafic ophiolite rocks. In the Australian deposits, chrysoprase occurs as veins and nodules with brown goethite and other iron oxides in the magnesite -rich saprolite below an iron and silica cap.
Marlborough is famous for producing the world's finest chrysoprase, a semi-precious gem once coveted by Alexander the Great and Cleopatra. The small but high-grade deposit is located about 20 kilometres (12 mi) south-south-west of the township and is universally regarded as the most valuable find in the world. [citation needed]
Eucalyptus repullulans, commonly known as chrysoprase mallee, [2] is a species of mallee that is native to arid parts of Western Australia and the far north-west of South Australia. It has smooth bark, lance-shaped adult leaves, flower buds in groups of between seven and thirteen, cream-coloured flowers and cup-shaped, cylindrical or conical fruit.
Chrysoprase. Chrysoprase (also spelled chrysophrase) is a green variety of chalcedony, which has been colored by nickel oxide. (The darker varieties of chrysoprase are also referred to as prase. However, the term prase is also used to describe green quartz and to a certain extent is a color-descriptor, rather than a rigorously defined mineral ...
Chrome chalcedony is similar in appearance to the better known chrysoprase, but differs in that whilst chrome chalcedony is colored by chromium (as chromium(III) oxide), chrysoprase is colored by nickel. [4] The two can be distinguished with a Chelsea color filter, as chrome chalcedony will appear red, whilst chrysoprase will appear green.
The following is an alphabetical list of Eucalyptus species accepted by the Australian Plant Census as at February 2019. [1] Several species only occurring outside Australia, including E. orophila, E. urophylla and E. wetarensis are listed at the World Checklist of Selected Plant Families.
Dragon's Blood, sometimes called Australian bloodstone, is composed of red jasper and green epidote. The name heliotrope derives from ancient beliefs about the manner in which the mineral reflects light. Such notions are described, for example, by Pliny the Elder (Nat. Hist. 37.165). [1]
Yundamindera, also once known as The Granites, is an abandoned town located between Leonora and Laverton in the Shire of Leonora in the Goldfields–Esperance region of Western Australia. The town is surrounded by pastoral stations, mostly raising sheep.