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Tugtupite
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<p>Tugtupite is a <a href="/facts/Beryllium/dv295voP">beryllium</a> <a href="/facts/Aluminium/7wmR8jYE">aluminium</a> <a href="/facts/Silicate_minerals/WclrQW2I">tectosilicate</a>. It also contains <a href="/facts/Sodium/eYuSPu2V">sodium</a> and <a href="/facts/Chlorine/y27UwYBM">chlorine</a> and has the formula <a href="/facts/Sodium/eYuSPu2V">Na</a>4<a href="/facts/Aluminum/7wmR8jYE">Al</a><a href="/facts/Beryllium/dv295voP">Be</a><a href="/facts/Silicon/cgWx0hdr">Si</a>4<a href="/facts/Oxygen/acyn6o8r">O</a>12<a href="/facts/Chlorine/y27UwYBM">Cl</a>. Tugtupite is a member of the silica-deficient <a href="/facts/Feldspathoid/a2hPbGCg">feldspathoid</a> mineral group. It occurs in high alkali <a href="/facts/Intrusive_rock/Wl6xaY1a">intrusive</a> <a href="/facts/Igneous_rocks/xeMJhUah">igneous rocks</a>. </p><p>Tugtupite is <a href="/facts/Tenebrescent/0ADkhWWe">tenebrescent</a>, sharing much of its crystal structure with <a href="/facts/Sodalite/asvGHg81">sodalite</a>, and the two minerals are occasionally found together in the same sample. </p><p>Tugtupite occurs as vitreous, transparent to translucent masses of <a href="/facts/Tetragonal/12Aop255">tetragonal</a> crystals and is commonly found in white, pink, to crimson, and even blue and green. It has a <a href="/facts/Mohs_hardness/wXBMcVIm">Mohs hardness</a> of 4 and a <a href="/facts/Specific_gravity/ySquGd2x">specific gravity</a> of 2.36. It <a href="/facts/Fluorescence/qsJVT2qP">fluoresces</a> crimson under <a href="/facts/Ultraviolet/kncBUqn5">ultraviolet</a> radiation. </p><p>It was first found in 1962 at Tugtup agtakôrfia <a href="/facts/Ilimaussaq_intrusive_complex/nM2yoVRe">Ilimaussaq intrusive complex</a> of southwest <a href="/facts/Greenland/aagXRTB7">Greenland</a>. It has also been found at <a href="/facts/Mont-Saint-Hilaire%2c_Quebec/F72ConSL">Mont-Saint-Hilaire</a> in <a href="/facts/Quebec/4hhNvb4t">Quebec</a> and in the <a href="/facts/Lovozero_Massif/nxwvyeWU">Lovozero Massif</a> of the <a href="/facts/Kola_Peninsula/uTtzIYES">Kola Peninsula</a> in <a href="/facts/Russia/jfkCwyxn">Russia</a> </p><p>The name is derived from the Greenlandic <a href="/facts/Inuit/wJaIGexN">Inuit</a> word for <a href="/facts/Reindeer/LXSh8svy">reindeer</a> (<i>tuttu</i>), and means "reindeer blood". </p><p>The U.S. Geological Survey reports that in Nepal, tugtupite (as well as jasper and nephrite) were found extensively in most of the rivers from the Bardia to the Dang. </p><p>It is used as a gemstone. </p> Wikimedia Commons has media related to Tugtupite.