Discussion:Tourmaline
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C'est conventionnel d'utiliser Y comme "inconnue" dans les formules chimiques ? parce que ça peut prêter à confusion avec l'Yttrium. --ArséniureDeGallium 8 mars 2006 à 12:01 (CET)
- Oui, on utilise souvent X,Y,Z comme symboles collectifs pour les cations - ex. XYZO4 pour les olivines, XYZ2O6 pour les pyroxènes, etc.. Certains auteurs préfèrent A,B,C, mais là encore on pourrait dire que B = bore et C = carbone. Mahlerite | ✉ 8 mars 2006 à 12:09 (CET)
2,352 Gemstone Images not worth being added as a link?
[modifier le code]Hi friends, you could be the one who help me with whitelisting my URL www.realgems.org. Since December 2008 Vsmith & Co. (USA) have deleted all my external links so that all gemstone-interested Wiki users worldwide (! - except Germany) cannot find my collection of faceted gemstones (and their rough versions) any more... From July 2008 until December 2008 all my link additions (to my own, educational and non-profit website) were not regarded as spam!!!
Since a few days I have followed the instruction of an English Wiki admin to create something worthy for Wikipedia so that my URL can be whitelisted again. So I created these articles on German Wiki BECAUSE GERMAN WIKI HAS WHITELISTED MY URL BECAUSE THEY HAVE SEEN THAT MY COLLECTION OF MORE THAN 2000 IMAGES IS WORTH BEING LINKED AT WIKIPEDIA: Tugtupite, Jeremejevite, Benitoite and added some data to Red Beryl. What else can I do to reach a worldwide whitelisting?
More infos here: http://meta.wikimedia.org/wiki/Talk:Spam_blacklist#Realgems.org_-_a_useful_website_for_Wiki_users.3F
Kind regards, Mike / Realgems.org F.N. Berg (d) 2 mars 2009 à 23:36 (CET)