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Turquoise


Turquoise
Photo Information
Copyright: Volkan Eroglu (Gramineae) Gold Star Critiquer/Gold Note Writer [C: 62 W: 3 N: 212] (1074)
Genre: Landscapes
Medium: Color
Date Taken: 2010-12-17
Categories: Mountain
Camera: Nikon D-5000, 18-55mm AF-S Nikkor, @ ISO 200
Exposure: f/20.0, 2 seconds
Photo Version: Original Version
Date Submitted: 2010-12-17 11:09
Viewed: 2980
Points: 14
[Note Guidelines] Photographer's Note
Turquoise (Hydrated cooper aluminium phosphate)

One of the most beautifully coloured of all stones, turquoise is a phosphate that combines cooper and aluminium. The cooper causes the exquisite blue-green, but the colour varies from green to yellowish grey. Pale sky blue is the most cherished gem colour - Especially when infused with fine veins of impurities that show it is natural, not artifical. Although opaque, solid turquoise is actually crystalline, or rather, cryptocrystalline, since the crystals are too small to be seen by naked eye. It typically forms in waxy veinlets where groundwater washes over weathered, aluminium-rich rock in the presence of cooper. Thus it is often associated with cooper deposits as a secondary mineral. Turquoise contains water, but won't form if conditions are wet, so most major deposits are in dry regions. For thousands of years, the best turquoise came from the deserds of persia and known as Persian turquoise.

Turquoise is probably one of the oldest gems known. Egyptians cherised it 6,000 years ago, and established the world's oldest mines in hard rock, in the Sinai pennisula. When the tomb of the Egyptian queen Zer was excaveted in 1900, she was found to be buried with gold and turquoise bracelet - one of the oldest known surviving pices of jewellery. In Ancient Persia, where it was mined on Mountain Alimersai, now in Iran, it was used as a talisman for good fortune. It probably came to Europe from Persia from time of the Crusades onwards. The Europeans though it originated in Turkey and it may have got its name from the French for Turkish. In the Americans, turquoise has been valued since at least 200BC by native peoples in American south-west such as the Navajo, and by Indian tribes in Mexico. The Navajo made turquoise into beads, carvings and mosaics. The Navajo are said to belive turquoise is a piece of sky that has fallen to Earth, while the Apache think it combines the spirits of sea and sky to help hunters. The Aztecs also cherished turquoise, and the treasure of Montezuma contains a turquoise mosaic serpent.

CatherineD, boreocypriensis, matatur has marked this note useful
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Discussions
ThreadThread Starter Messages Updated
Minerals and Fossilswinterpalace 6 12-20 23:43
To boreocypriensis: Selamlar HocamGramineae 2 12-18 02:56
To CatherineD: HiGramineae 1 12-18 01:27
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Critiques [Translate]

Merhaba Volkan,
Unusual subject and very well captured! The light is very nice with the dark background. Great details too. You really found it near Izmir? Iyi geceler,
Catherine

An unknown subject you revile, with a beautiful presentation, thank you.
Samiran Nandy

Selam Volkan, güzel bir stüdyo çalışması. Alta ayna mı, yoksa cam mı koydun?
Selamlar.

Bu değişik ve gözüme çok hoş gelen yüklemen için teşekkürler Volkan, mineralin rengini ve onu içeren kayacın üç boyutlu özelliklerini iyi yansıtmışsın. Bir doğa sitesinde doğanın en güzel bileşenlerinden olan çeşitli doğal mineraller neden daha sık görülmez hep merak etmişimdir...
Mehmet

Hi Volkan,

Beautiful find, you must be very pleased!

TFS

Verite

great capture, TFS Ori

Merhaba Volkan,

Adını Türk mavisinden olan bu güzel minerali oldukça ilginç:) bir yöntemle görütülemişsin. Selçuklu mimarisinde hakim olan turkuaz renk herhalde bu mineralden ilhamla elde edilmiş.
Eline sağlık,
Ömer.

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