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Rainbow lattice sunstone, also known as rainbow lattice, is a type of orthoclase feldspar that exhibits a rare combination of aventurescence, adularescence, and a distinctive iridescence lattice pattern. The iridescence lattice pattern consists of inclusions that are the result of crystallographically oriented exsolution crystals within the ...
Sunstone is a microcline or oligoclase feldspar, which when viewed from certain directions exhibits a spangled appearance. It has been found in Southern Norway , Sweden , various United States localities and on some beaches along the midcoast of South Australia.
Rainbow lattice sunstone; Rubicline; S. Sanidine; Saussurite; Spectrolite; Sunstone This page was last edited on 7 September 2019, at 16:36 (UTC). Text is available ...
Aventurine feldspar or sunstone can be confused with orange and red aventurine quartzite, although the former is generally of a higher transparency. Aventurine is often banded and an overabundance of fuchsite may render it opaque, in which case it may be mistaken for malachite at first glance.
Rainbow lattice sunstone; References This page was last edited on 15 August 2023, at 22:33 (UTC). Text is available under the Creative Commons Attribution-ShareAlike ...
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It has been speculated that the sunstone (Old Norse: sólarsteinn, a different mineral from the gem-quality sunstone) mentioned in medieval Icelandic texts, such as Rauðúlfs þáttr, was Iceland spar, and that Vikings used its light-polarizing property to tell the direction of the sun on cloudy days for navigational purposes.
Iceland spar, possibly the medieval sunstone used to locate the Sun in the sky when clouds obstruct it from view. The sunstone (Icelandic: sólarsteinn) is a type of mineral attested in several 13th–14th-century written sources in Iceland, one of which describes its use to locate the Sun in a completely overcast sky.
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