The crystals, forming a druse over the mother rock, are very small; 1 mm (0.04 in) is considered large. Die skip is 294 meter lank. The former mine is situated about 4 kilometres from an ancient temple dedicated to the deity Hathor. Het groene, geelgrijze, lichtblauwe, maar typisch blauwgroene turkoois heeft een wasglans en een vaal blauwwitte streepkleur.Het kristalstelsel is triklien en de splijting is perfect volgens het kristalvlak [001] en goed volgens [010]; overigens komt het nagenoeg alleen in cryptokristallijne vormen voor dus is de splijting in de praktijk niet waar te nemen. dc.coverage.temporal: Creation date: 1962: en_US: dc.creator: Warhol, Andy: en_US: dc.date: 1962: en_US: dc.date.accessioned: 2006-09-30T06:42:12Z: dc.date.available [1] Stalactite forms have been reported. Early backing materials included the casings of old model T batteries, old phonograph records, and more recently epoxy steel resins. The Aztecs inlaid turquoise, together with gold, quartz, malachite, jet, jade, coral, and shells, into provocative (and presumably ceremonial[clarification needed]) mosaic objects such as masks (some with a human skull as their base), knives, and shields. It was apparently unknown in India until the Mughal period, and unknown in Japan until the 18th century. Most are worked by hand with little or no mechanization. 4H2O. Die APL Turquoise is 'n houerskip van die American President Lines (APL) uit 1996. Single greeting card featuring Andy Warhol's iconic Turquoise Marilyn, a portrait of actress Marilyn Monroe on a turquoise background. It consists of four canvases, each a square measuring 40 inches and each consisting of a painting of Marilyn Monroe, each shot through in the forehead by a single bullet. Often referred to as "Egyptian turquoise", Sinai material is typically the most translucent, and under magnification, its surface structure is revealed to be peppered with dark blue discs not seen in material from other localities. Care should therefore be taken when wearing such jewels: cosmetics, including sunscreen and hair spray, should be applied before putting on turquoise jewellery, and they should not be worn to a beach or other sun-bathed environment. [10], Turquoise deposits are widespread in North America. Turquoise deposits probably form in more than one way. While nearly every county in the state has yielded some turquoise, the chief producers are in Lander and Esmeralda counties. Most of the pieces made today, with turquoise usually roughly polished into irregular cabochons set simply in silver, are meant for inexpensive export to Western markets and are probably not accurate representations of the original style. Because of the geology of the Nevada deposits, a majority of the material produced is hard and dense, being of sufficient quality that no treatment or enhancement is required. [13], China has been a minor source of turquoise for 3,000 years or more. The French conducted archaeological excavations of Egypt from the mid-19th century through the early 20th. Andy Warhol was fascinated with fame for himself, but also of those that were famous. Bonded and reconstituted material is worth considerably less. As is so often the case with any precious stones, full disclosure about treatment is frequently not given. Kievlenko (1980), updated, Learn how and when to remove this template message, "Turquoise: mineral information and data", "Role of Potassic Alteration for Porphyry Cu Mineralization: Implication for the Absence of Porphyry Cu Deposits in Japan: Role of potassic alteration in porphyry system", "Historic preservation in the Cerrillos mining district", https://en.wikipedia.org/w/index.php?title=Turquoise&oldid=997949838, Articles containing Ancient Greek (to 1453)-language text, Articles with unsourced statements from September 2011, Articles with unsourced statements from March 2014, All articles with specifically marked weasel-worded phrases, Articles with specifically marked weasel-worded phrases from April 2019, Articles with unsourced statements from May 2015, Wikipedia articles needing clarification from November 2019, Articles with unsourced statements from June 2014, Articles with unsourced statements from November 2019, Articles needing additional references from April 2019, All articles needing additional references, Articles with unsourced statements from September 2013, Articles with unsourced statements from June 2007, Articles with unsourced statements from December 2020, Creative Commons Attribution-ShareAlike License, This page was last edited on 3 January 2021, at 01:08. The mother rock or matrix in which turquoise is found can often be seen as splotches or a network of brown or black veins running through the stone in a netted pattern; this veining may add value to the stone if the result is complementary, but such a result is uncommon. Believing that she meant she wanted to photograph the paintings, Warhol agreed. Turquoise may also pseudomorphously replace feldspar, apatite, other minerals, or even fossils. Turquoise, already favoured for its pastel shades since around 1810, was a staple of Egyptian Revival pieces. The price of natural untreated Sleeping Beauty turquoise has risen dramatically since the mine's closing. Historically, light waxing and oiling were the first treatments used in ancient times, providing a wetting effect, thereby enhancing the colour and lustre. Prolonged exposure to direct sunlight may also discolour or dehydrate turquoise. [1], Dorothy Podber: 'Witch' who shot Warhol's Marilyns, Ten Portraits of Jews of the Twentieth Century, The Velvet Underground and Nico: A Symphony of Sound, The Autobiography and Sex Life of Andy Warhol, https://en.wikipedia.org/w/index.php?title=Shot_Marilyns&oldid=945908280, Creative Commons Attribution-ShareAlike License, This page was last edited on 16 March 2020, at 21:48. Only one mine in California, located at Apache Canyon, operates at a commercial capacity today. These fakes are detected by gemologists using a number of tests, relying primarily on non-destructive, close examination of surface structure under magnification; a featureless, pale blue background peppered by flecks or spots of whitish material is the typical surface appearance of natural turquoise, while manufactured imitations will appear radically different in both colour (usually a uniform dark blue) and texture (usually granular or sugary). After use, turquoise should be gently cleaned with a soft cloth to avoid a buildup of residue, and should be stored in its own container to avoid scratching by harder gems. Die skip vaar onder die vlag van Singapoer. [12], In 1912, the first deposit of distinct, single-crystal turquoise was discovered at Lynch Station in Campbell County, Virginia. Backing does not diminish the value of high quality turquoise, and indeed the process is expected for most thinly cut American commercial gemstones. Je kunt je voorkeuren bijwerken, je toestemming op elk moment intrekken en een gedetailleerde beschrijving bekijken van de soorten cookies die wij en onze partners gebruiken in ons Cookiebeleid. [21], The epoxy binding technique was first developed in the 1950s and has been attributed to Colbaugh Processing of Arizona, a company that still operates today. Some of this unusually-coloured turquoise may contain significant zinc and iron, which is the cause of the beautiful bright green to yellow-green shades. X-ray diffraction testing shows its crystal system to be triclinic. The change can be caused by the light, or by a chemical reaction brought about by cosmetics, dust or the acidity of the skin. [4] The word turquoise dates to the 17th century and is derived from the French turquois meaning "Turkish" because the mineral was first brought to Europe through Turkey from mines in the historical Khorasan of Iran (Persia).[2][3][4][5]. Her titles included "Lady of Turquoise", "Mistress of Turquoise", and "Lady of Turquoise Country". Staining between grain boundaries may be visible in dyed imitations. After she had shot the Marilyns and left, Andy Warhol purportedly asked Billy Name to please ask Dorothy not to do that again. Morenci and Turquoise Peak are either inactive or depleted. The finest of turquoise reaches a maximum Mohs hardness of just under 6, or slightly more than window glass. 5 out of 5 stars (2,049) 2,049 reviews. The turquoise is also a stone in the Jewish High Priest's breastplate, described in Exodus chapter 28. Facebook gives people the power to share and makes the world more open and connected. Despite its low hardness relative to other gems, turquoise takes a good polish. Some deposits, such as those of Saguache and Conejos Counties in Colorado[10] or the Cerrillos Hills in New Mexico,[11] are typical supergene deposits formed from copper porphyries. A guard stands near the painting Turquoise Marilyn by Andy Warhol during a media preview on April 1, 2009 of a exhibition on loan to Sotheby's New York entitled Women. Als je iets meer luxe wilt, kies dan voor een luxe villakamer. Je kunt je cookievoorkeuren instellen met de onderstaande schakelaars. 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