{"id":832,"date":"2017-10-12T00:00:00","date_gmt":"2017-10-12T00:00:00","guid":{"rendered":"https:\/\/amq-inc.com\/quartz-most-commonly-found-in-nature\/"},"modified":"2017-10-12T00:00:00","modified_gmt":"2017-10-12T00:00:00","slug":"quartz-most-commonly-found-in-nature","status":"publish","type":"post","link":"https:\/\/amq-inc.com\/en\/quartz-most-commonly-found-in-nature\/","title":{"rendered":"Quartz, most commonly found in nature"},"content":{"rendered":"
\"Source:<\/div>\n
\n

Commen\u00e7ons par une question : quel est le min\u00e9ral que l\u2019on trouve le plus dans la nature ? Bon, c\u2019est facile : c\u2019est le quartz (d\u2019o\u00f9 le titre de cette fiche).<\/p>\n

Le quartz compose notre lithosph\u00e8re (\u00e7a, c\u2019est la couche externe solide de la terre) \u00e0 hauteur de 12 %. On le trouve en grande quantit\u00e9 dans le granit, le gr\u00e8s et le sable.<\/p>\n

Abondant, le quartz n\u2019en est pas moins pris\u00e9 par diff\u00e9rentes industries notamment la joaillerie. \u00c9clatant et pas cher, il est normal que le quartz serve largement \u00e0 la confection de bijoux dits \u00ab accessoires \u00bb.<\/p>\n

De nos jours, c\u2019est le quartz synth\u00e9tique qui est le plus utilis\u00e9. Il est fabriqu\u00e9 \u00e0 partir de quelques grains de quartz naturel. Il a l\u2019avantage d\u2019\u00eatre plus pur, donc sans taches, sans d\u00e9fauts et on peut en faire de toutes les couleurs. \u00c0 l\u2019\u00e9tat naturel, il se pr\u00e9sente sous la forme de grands cristaux incolores, l\u00e9g\u00e8rement color\u00e9s ou fum\u00e9s.<\/p>\n

Utilisation<\/strong><\/p>\n

Le quartz naturel est utilis\u00e9 dans la fabrication du verre (verre plat, verre \u00e0 bouteille, verre optique, fibre de verre). Dans l\u2019industrie \u00e9lectrom\u00e9tallurgique, on utilise du quartz pour la production de\u00a0ferrosilicium<\/a>, de\u00a0silicium m\u00e9tal<\/a>\u00a0et de\u00a0carbure de silicium<\/a>.<\/p>\n

Le quartz est aussi fortement utilis\u00e9 par les entreprises de construction. On l\u2019emploie pour faire briller les plus belles places de nos villes. On l\u2019utilise aussi pour donner de l\u2019\u00e9clat \u00e0 nos comptoirs de cuisine ou encore, pour embellir le sol de nos terrasses.<\/p>\n

Mais le quartz ne sert pas seulement \u00e0 l\u2019ornementation. Il a \u00e9galement une grande valeur pour le secteur des technologies de pointe. Les montres suisses par exemple, contiennent du quartz. Gr\u00e2ce \u00e0 la capacit\u00e9 du quartz \u00e0 vibrer r\u00e9guli\u00e8rement \u00e0 diff\u00e9rentes fr\u00e9quences, les aiguilles tournent avec une grande r\u00e9gularit\u00e9.<\/p>\n

Dans l\u2019industrie optique, le quartz est dans tous les verres de contact et verres de lunettes.<\/p>\n

Comme c\u2019est le cas pour un grand nombre de min\u00e9raux, nos ordinateurs, t\u00e9l\u00e9visions et autres appareils technologiques en contiennent.<\/p>\n

Mines au Qu\u00e9bec<\/strong><\/p>\n

Le quartz peut \u00eatre \u00e0 l\u2019occasion associ\u00e9 aux gisements d\u2019or. Nous parlerons donc ici de veines de quartz aurif\u00e8res, \u00e0 titre d\u2019exemple plusieurs gisements d\u2019or situ\u00e9s dans la r\u00e9gion nord-ouest qu\u00e9b\u00e9coise sont constitu\u00e9s de quartz aurif\u00e8re. Ici, le quartz est g\u00e9n\u00e9ralement de couleur blanc laiteux ou gris p\u00e2le.<\/p>\n

Le quartz se retrouve partout dans le monde, mais les plus grands producteurs mondiaux de quartz sont entre autres, l\u2019Italie, l\u2019Australie, le Mexique. Le Qu\u00e9bec, et m\u00eame le Canada, ne sont pas de grands producteurs de quartz. Parmi les mines qu\u00e9b\u00e9coises faisant de l\u2019extraction du quartz se trouvent, entre autres, Petit-Lac-Malbaie, Saint Canut, Saint-R\u00e9mi-d\u2019Amhert, Lac Daviault, Chromasco, Sainte Clotide, Saint-Bruno-De-Guigues, Lac Beauch\u00eane, Ormstown et Saint-Joseph-du-Lac.<\/p>\n

\u00c0 1h30 de Montr\u00e9al, \u00e0 Bonsecours en Estrie, se trouve la seule mine d\u2019exploitation,\u00a0Mine Cristal<\/a>. Cette mine \u00e0 ciel ouvert est dot\u00e9e d\u2019un impressionnant gisement de cristaux de quartz, fait assez rare sur la plan\u00e8te. Mine Cristal est toutefois peu exploit\u00e9e. D\u2019abord achet\u00e9e par Bombardier qui cherchait \u00e0 utiliser le quartz pour son industrie dans les ann\u00e9es 60, elle a \u00e9t\u00e9 ensuite reprise par les Normand, un couple qui en a fait un site \u00e9ducatif et touristique. Au pied des Appalaches, avec 300 000 visites depuis son ouverture, la visite de la mine vaut le d\u00e9tour pour ceux qui seraient int\u00e9ress\u00e9s par voir le quartz dans son milieu naturel.<\/p>\n

Faits int\u00e9ressants<\/strong><\/p>\n

Le mot quartz trouve probablement racine dans le mot slave \u00ab KWARDY \u00bb qui veut dire \u00ab dur \u00bb. Par cette qualit\u00e9, le quartz a \u00e9t\u00e9 largement utilis\u00e9 en des temps recul\u00e9s, dans la confection d\u2019outils n\u00e9cessaires \u00e0 la survie des hommes. Ainsi, il servait dans la fabrication des fl\u00e8ches, des lames de couteaux, pour allumer du feu (car le quartz appartient \u00e0 la m\u00eame famille que le silex) et enfin, dans la fabrication de contenants, en verre notamment.<\/p>\n

Le quartz a \u00e9t\u00e9 la source de nombreuses superstitions. C\u2019est gr\u00e2ce \u00e0 lui que l\u2019on voit notre avenir dans les boules de cristal ! Cette pierre serait favorable au ressourcement et \u00e0 la m\u00e9ditation. On lui donne aussi le pouvoir de canaliser et de transmettre l\u2019\u00e9nergie de gu\u00e9rison pour les maux de dos par exemple, ou encore les douleurs oculaires, probl\u00e8mes nerveux, probl\u00e8mes de circulation, etc. C\u2019est pour cette raison qu\u2019on le retrouve dans des compl\u00e9ments alimentaires.<\/p>\n

L\u2019information contenue dans cette fiche et mise \u00e0 jour en date du 27 mai 2015, provient de sources publiques et v\u00e9rifiables.<\/em><\/p>\n

Sources :<\/p>\n

\u2022\u00a0Quantum<\/a><\/p>\n

\u2022\u00a0Quartz, rue des villes de Sherbrooke<\/a><\/p>\n

\u2022 Le Quartz<\/p>\n<\/div>\n

\n

Notes<\/h4>\n

1<\/sup>http:\/\/minecristal.com\/?page_id=4&lang=en-us<\/a>
\n2<\/sup>http:\/\/fr.wikipedia.org\/wiki\/Quartz_(min%C3%A9ral)<\/a>
\n3<\/sup>http:\/\/fr.wikipedia.org\/wiki\/Quartz_(min%C3%A9ral)<\/a>
\n4<\/sup>http:\/\/minerals.usgs.gov\/minerals\/pubs\/commodity\/silica\/myb1-2011-silic.pdf<\/a>
\n5<\/sup>http:\/\/fr.wikipedia.org\/wiki\/Quartz_(min%C3%A9ral)\u00a0<\/a>
\n6<\/sup>http:\/\/fr.wikipedia.org\/wiki\/Quartz_(min%C3%A9ral)<\/a><\/p>\n<\/div>\n

\n
\n

R\u00e9f\u00e9rences<\/h4>\n

Minist\u00e8re des ressources naturelles<\/a>
\nU.S. Geological Survey<\/a>
\nMine Cristal<\/a>
\nWikip\u00e9dia<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Commen\u00e7ons par une question : quel est le min\u00e9ral que l\u2019on trouve le plus dans la nature ? 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