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Amazonite

Amazonite, also known as Amazonstone, is a green tectosilicate mineral, a variety of the potassium feldspar called microcline. Its chemical formula is KAlSi3O8, which is polymorphic to orthoclase.

Its name is taken from that of the Amazon River, from which green stones were formerly obtained, though it is unknown whether those stones were amazonite. Although it has been used for jewellery for well over three thousand years, as attested by archaeological finds in Middle and New Kingdom Egypt and Mesopotamia, no ancient or medieval authority mentions it. It was first described as a distinct mineral only in the 18th century.

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Vase mit KerbungenVase gebautEhrenteller (Wandteller) Amazonit - Rauchquarz - KalifeldspatEhrenteller (Wandteller) Amazonit - Rauchquarz - KalifeldspatEhrenteller Rauchquarz der IGBE für 50-Jährige Mitgliedschaft
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