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Eye of the Sahara (Kalb ar-Riszat) $2...
Eye of the Sahara (Kalb ar-Riszat) $2 1oz .999 pure silver, proof antique finish.
This beautiful pure silver coin coloured with digital printing technology, shows the famous Eye of the Sahara from a top-view perspective. The coin has stunning colouration.
Mintage: Just 999 pieces worldwide. With box and COA.
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|Face Value :||2 Dollars|
|Metal :||.999 Fine silver|
|Weight :||1 oz|
|Size :||38.61 mm|
|Quality :||Proof antique finish|
|Mintage :||Only 999 pcs. worldwide|
|Certificate of Authenticity :||Yes|
|Original ETUI box/case :||Yes|
The Richat Structure, also known as the Eye of the Sahara and Guelb er Richat, is a prominent circular feature in the Sahara near Ouadane, west–central Mauritania.
The Richat Structure is a deeply eroded, slightly elliptical dome with a diameter of 40 kilometres (25 mi). The sedimentary rock exposed in this dome ranges in age from Late Proterozoic within the center of the dome to Ordovician sandstone around its edges. The sedimentary rocks comprising this structure dip outward at 10°–20°. Differential erosion of resistant layers of quartzite has created high-relief circular cuestas. Its center consists of a siliceous breccia covering an area that is at least 30 kilometres (19 mi) in diameter.
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