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©2009 ~Romaeangel
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In French sorry! This is the draft of my Practical Work, "Travaux pratiques" in Mineralogy.
Nom du minéral : Apatite Classe / Sous-Classe / Famille : Phosphates Formule Chimique : Ca 5(PO4) 3(F,Cl,OH) Système de cristallisation : Hexagonal Morphologie (faciès, habitus, agrégats, macles, caractères particuliers) : - Les cristaux ont des faciès variés, prismes courts ou allongés, strillés verticalement cristaux tabulaires parfois aplatis, voire aciculaires. En masses granulaires à compactes. - Concrétionnée, oolithique, nodulaire, écailleuse, en croûtes fibreuses, terreuse. Maclés, base hexagonale (faces inégales)cristaux prismatiques allongés souvent terminés par une pyramide, parfois tabulaires, ou masses grenues, concrétionnées (""collophane""), arrêtes souvent arrondies Cassures et clivages : Pauvre :0 PC ou mauvais, sans parting -> conchoïdale, irrégulière, fragile Couleur / éclat / transparence : Opaque à translucide. Eclat vitreux, parfois résineux ou mat (variétés compactes). Vert de mer, bleu-vert, violet, parfois incolore, jaune, brune, rose. Dureté : 5 Trace : Aucune Densité : 3,18 Conditions de gisement : presque toutes roches éruptives,les pegmatites (notamment syénites né  héliniques), déôts sédimentaires marins, gîtes d'origine organique <-> magnétite, or, zircon Visit my blog, there are the french explanations for every Deviation I let here! (Les articles correspondants aux Deviations sont sur mon blog) : [link] |
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January 9
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Comments
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Ceade mille failte!!(Gaelic:100 1000 welcome!)
Visit my blog, french explanations for every Deviation I let here!(Les articles correspondants aux Deviations sont sur mon blog) : [link]
[link]
Snow
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Geology forever!
Que les villes s'allument dans le soir. Ma journée est faite, je quitte l'Europe. L'air marin brûlera mes poumons, les climats perdus me tanneront...
[Rimbaud, Mauvais Sang]
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Ceade mille failte!!(Gaelic:100 1000 welcome!)
Visit my blog, french explanations for every Deviation I let here!(Les articles correspondants aux Deviations sont sur mon blog) : [link]
[link]
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