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Je pensais que notre ami cielbleu faisait une farce. Il est évident que cette pierre n'est pas naturelle. Elle semble passée à la bombe aérosol. D'où ma réponse un peu surréaliste. Maintenant, tu sembles causer en connaissance de cause et, si tu es dans le vrai, je m'en excuse auprès de Cielbleu.

Très bonne idée, Totof ! je vais appliquer ton principe chez moi. çà fait longtemps qu'elle ne m'a pas gâté... Au passage, puisque c'est un sujet pub, je vous informe que je suis graphiste depuis une trentaine d'années et j'aimerai bien faire la mise en page d'un ouvrage du genre que présente Otto. Je pense pouvoir apporter certaines choses nouvelles...

je paris que l'intérieur est orange fluo !...

Alors, là, chapeau ! Grâce à toi, je comprends que Mindat restera libre d'accès à l'avenir (sauf, bien sûr, si la Mineralogical Society of America est privatisée...mais il y a peu de chance que cela arrive !). Voilà qui est encourageant à continuer la contribution. Mindat en français, c'est réaliste ? C'est combien de samedi matin pour 1GM ?

Pour que tout le monde prenne la mesure de la chose, voilà un copié/collé du texte auquel fait référence Jojm : About mindat.org copyrightsWhat is the copyright status? Many people have asked about the copyright status of mindat.org, so this page attempts to explain what copyrights mindat.org is protected by, and why, and what you can and cannot do with the data in this site. Different elements of this site are protected in different ways and for different reasons. Program Code The program code that was created to host and run the mindat.org database is the copyright of Jolyon Ralph. Some other portions (such as the Phorum messageboard) use open-source software. Mineral and Location Data Individual items of information (such as scientific data for a mineral, or the name and location for a mineral locality) are regarded as facts rather than a artistic or technical creation, and as such cannot be copyrighted. This means you are free to take individual pieces of information and use them in any way you wish - for example to copy a location name for your mineral label. The database as a whole however is covered by database copyright (inside the European Union this is covered by directive 96/9/EC and others, there are similar laws in the US and other countries). This says that a database of information can be protected by copyright even if the individual component items of the database are primarily scientific facts - in the same way that individual words cannot be copyrighted, but when combined into a book then end result can be. It's actually a little more complicated than this - there are individual items of information that are included within the data, primarily the descriptions of localities which are copyrightable elements themselves, therefore the database as a whole is the copyright of mindat.org, containing elements that are either scientific facts (not copyrighted) or text created by contributors (remains the copyright of the contributor). Why copyright it at all? Why not make it freely available Mindat.org relies on user contributions to improve the quality of our database. When a mistake is spotted it is corrected. Because we have one central 'master copy' and there are no other publically avaiable copies of this data, once a mistake is corrected, it is corrected for good. In the traditional world of print, if a mistake creeps into a book or a magazine, then it is there forever. If we allowed free use of our mindat.org database then we would see countless other copies of it available on the internet, on CD, and in print, each of which would be out of date almost the minute they are downloaded. We would no longer have a simple way to correct mistakes - once a mistake is copied and duplicated, we have lost control of it, and the mistake will get perpetuated forever. We need to protect the copyright of our database so we can protect the integrity of the database and the integrity of the mindat.org name. A secondary concern is to prevent other people trying to take the database that our contributors have worked hard on and use it for their own agenda (eg for commercial means). Of course, mindat.org remains free for you to use, and access to data on the site will remain free, and we have put protections in place to ensure that, see below. I have a genuine reason that I'd like to use your data in my project, can I? Please talk to us - we're happy to try to help people use our data in a responsible way. Note that we are unlikely to agree to something that allows significant portions of the database to be copied out of the site unless they are linked in such a way that updates to mistakes on mindat.org automatically update and change the copy that you are using, for example using an XML feed. We are also restricted in what we can and cannot allow permission for, see below. In certain cases we will build interfaces for you to help you use our data. For example, the mineral list within the Wikipedia online encyclopedia is generated automatically from a list provided by mindat.org. This list of data is provided under the standard Wikipedia licence for use without any further restrictions. Copyright of Photographs Photographs, like other contributions, remain the copyright of the uploader and are labelled as such within the site. It is entirely up to the photographer to specify what terms of use they wish to attach to their images. Some photographers may specifically waive copyrights and allow their photographs to be freely used for any purpose. Others may allow non-commercial use of their images on request. In all cases, mindat.org are not involved with the copyright of these photographs and any such requests to use must go directly to the photographer. Our own restrictions of use Because of the complex copyright situation that the mindat.org database is covered with, we are even restricted in using the data ourselves for commercial purposes without arranging clearance with every contributor. This means that we cannot, for example, put mindat.org data into books, onto CDs, use the images to sell T-Shirts etc. without clearing each item of information and each photograph with contributors for this purpose. In some cases we may wish to do these sorts of things (selling T-shirts is something we are probably going to do), but we will make sure we have written permission for every image that we wish to use. Can I download the data for personal use? At the moment no - not just because of the copyright issues but also because the load on our servers for allowing such large downloads would be too much for us to deal with at the moment. However, we are looking at ways that data can be downloaded for personal use (this would not include items that could be regarded as copyrightable, such as the description fields and the photo library) and we would be happy to discuss with anyone interested in using such data ways to work together. Is the database backed up? Regular mindat.org visitors will remember that we had a nasty crash in early 2005 that lost about 3 weeks of data entries (some of which we were later able to automatically recover). This embarassing incident was caused because our remote backup service had stopped working in such a way that we were unaware it was 3 weeks out of date. This was combined with a catastrophic failure on the mindat.org server hard disk. We went out and spent nearly $3000 on a new server with mirrored hard disks for redundancy, and have a second server dedicated for backup the other side of London. Every night the databases are synchronised between the two systems, and alerts are generated if this procedure fails (which it has done once or twice due to network problems). We also now have remote backups with the Mineralogical Society of America (see below) and will be setting up a second remote backup store in the US shortly. What happens if mindat.org dissapears? We have put a copy of the entire mindat.org sourcecode and database in the hands of the Mineralogical Society of America. This is being updated regularly. Should mindat.org cease to exist as a free resource for mineralogical information then the Mineralogical Society of America have full permission to take everything that was used to create mindat.org (code, data, photographs, etc.) and continue it in any form they see fit. Although I wish to continue to run and operate mindat.org for as long as I am able, it is critical for the long-term survival of the database to have agreements such as this (and other similar agreements that we may well make in the future). Note that this also prevents us from deciding to charge for access to mindat.org data - if we decided to do this and restricted access to the information then the same clause would allow the MSA to relaunch mindat.org as a free site. We put this in place to guarantee that mindat.org will continue as a free information resource. Si une âme charitable (impartiale) voulait bien en faire une traduction/synthèse, on y verrait beaucoup plus clair ! Ce que j'en ai compris : c'est pas un truc simple et, concernant la base de données et le code source, une copie est entre les mains de la "Mineralogical Society of America"...

Le risque, c'est de se retrouver à terme, après rachats successifs du nom ou du contenu, avec une base de données payante où tous les participants antérieurs l'auront dans l'os. (une googlisation, quoi !) Une garantie de pérennité et de gratuité serait la bienvenue.

Sure, boys, it's a tourmaline !

Ce jour-là, non. La veille, avec toi, plus à l'est, oui !

Bah, tu n'es pas le seul ! La dernière fois, j'y ai passé cinq heures d'affilée (sous la pluie) pour des nèfles... mais j'aime bien ce coin-là de la Haute-Loire. J'y reviens systématiquement. Quant à Stéphane, il est tombé dedans ! on peut pas se comparer à lui...

Bonne pioche !

Le déluge est tout de même de bonne augure pour la poussée des minéraux velaves. Promis, je te fais signe quand je repasse dans le coin.

Sois patiente, UPS n'a pas tenu le délai... (hé,hé !)

Test OK ! C'est pas courant, tout de même, une pegmatite aussi farcie, et surtout en centre ville ! Bonne pêche !

C'est pas du schorl, çà ! C'est des restes de l' Amoco Cadiz !!

Celles-ci ne passeront pas à la taille, Eric ! Trop belles au naturel.

Je veux bien faire de l'échange, moi ! Je les trouve fascinantes ces petites choses. Dis-moi ce que tu veux en mp. Promis, je vide les fonds de tiroirs !! Elles sont presque aussi belles que celles de Steph...

Bien d'ac avec toi. Ces cristallisations sont une pure merveille. François en a fait de belles photos, je crois ?

Pharmacosiderite - Cap Garonne

Pour jouer, il faut un brin de culture minéralogique. Moi, à part les corindons... "titanite" ? Aucune idée du site, si cela en est.

Geoffrey nous donne au début des infos sur le tests qu'il a réalisé. çà colle pas avec le quartz...

Ben voilà, impec ! C'est quoi ton pendentif ?

Si trouvé dans la roche mère, poursuivre un peu jusqu'à trouver une faille normale, et là se coller un bon complexe d'Oedipe...

Apatite, c'est !

Jusqu'à maintenant, les "verres lybiques" (c'est pas une contrepèterie, çà ?) que j'ai vu étaient plus transparents.

Sympa ce coin ! C'est quoi la vieille bâtisse ? Sur la 181807 on voit des rocher plus blancs. Quoi c'est, docteur Kayou ?