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Atacamite

Posted by Ralph Bottrill  
avatar Re: Atacamite
April 10, 2009 10:17AM
Thanks Maurizio
I will include the Restauradora mine in the article, and add a picture from the Mindat files (both are there, but we should get the location on one photo (http://www.mindat.org/photo-199663.html) amended. I did have the site listed originally, but felt it was overshadowed by the La Farola specimens.
If you could look through the other poorly located Chilean specimen images in Mindat (http://www.mindat.org/photosearch.php?cform_is_valid=1&frm_id=mls&minname=atacamite&region=chile&text=&otype=0&stype=0&phototype=M&mtype=0&sort=&submit_mls=Search&phototypeo=M&go=1&cf_mls_page=1) and suggest more accurate locatins it would be most welcome. I am sure some labelled "Copiapo" or "Atacama" are from La Farola, but you may have better ideas?
Ralph

Regards,
Ralph
Re: Atacamite
April 10, 2009 12:56PM
Hi Rock There is a great deal of difficulty in distinguishing atacamites from the various mines on the Wallaroo and Moonta mineral field. Because Moonta was originally the richest mine many specimens were automatically attributed to Moonta mines. It is clear that most of the spectacular specimens originated from the New Cornwall Mine which flourished briefly in the 1860s. The New Cornwall Mine is quite close to the Wallaroo Mine leases which futher complicates the issue. I am just putting the finishing touches to an extensive article on the History and mineralogy of the Wallaroo and Moonta Mineral field in which I deal with this issue at some length, the article is based on many years of research and handling many specimens, tracing their provenance etc.. With regard to Burra I am only aware of one specimen, in the S.A. Museum collection , it consists of small prisms, pictures of fine specimens from Burra are probably( being diplomatic) mislabelled. I would be happy to provide help in terms of detailed descriptions and photographs if you contact me on micraus@aol.com.
avatar Re: Atacamite
April 10, 2009 05:45PM
David,
Much of what you say I am sure Ralph will want to put in the article. Thanks for the help.

Rock Currier
Crystals not pistols.
avatar Re: Atacamite
April 10, 2009 07:51PM
I have my doubts about the Ravensthorp specimen. I obtained one very similar in appearance to the one shown from Ravensthorp, and it turned out to be malachite.

Rock, it sounds like I need to re-shoot my atacamite from Tiger for the benefit of Tiger mineral collectors like yourself. The shot was taken before image stacking took off and I was rather proud of it at the time. I still don't think its the worst photograph of atacamite in the article. By the way, I do have Chuqui atacamites, and I will try to get a shot of one.

Message sent during lunch-at my day job,
Bob Meyer
avatar Re: Atacamite
April 10, 2009 08:30PM
You micro photographers are always riding the bleeding edge of what is possible. Pretty soon you will be fooling around with SEM images and photoshoping in the color. No depth of field problems there.

Rock Currier
Crystals not pistols.
avatar Re: Atacamite
April 11, 2009 12:36AM
Bob
There are obviously varying opinions on the Ravensthorpe specimen (see previous posts) - I will check with the WA Museum and see what they think.
Ralph

Regards,
Ralph
avatar Re: Atacamite
April 11, 2009 12:58AM
Rock
You are most welcome to help edit this article (could I stop you? ;) ), as i have been busy of late and found the formatting does take a lot of time. I agree images should have a scale and i was planning on going through them all and doing this. I found it handy to have the location on the photo as with shuffling stuff around I sometimes forgot where things came from. Agreed mineral names are generally uneccessary there although there is some inconsistency in other articles (eg adamite - but I guess its all work in progress). I am not sure we even need the mineral name above the location as its the name of the article and at the top. I shall keep at it with quartz, crocoite etc.
Ralph

Regards,
Ralph
avatar Re: Atacamite
April 11, 2009 01:04AM
David
Many thanks for your offer to help. I had been meaning to look for your email and ask about Moonta-Wallaroo atacamite as I knew you had been working on the site. Agreed it is difficult to be sure on the locations, as I wrote here. If you have any corrections or additions to the article please let me know, and I would love to see a draft of what you have written.
(Shouldn't you be at the Gemboree?)
Ralph

Regards,
Ralph
avatar Re: Atacamite
April 11, 2009 01:20AM
Ralph, No you couldn't stop me from screwing up your article, but since you are now a moderate of the Best Minerals forums, you could do the same to my articles as well, but we both know that won't happen. We both don't have time enough to do what we should be doing any way. If I can find the time Ill try to help you with the captions and arranging the pictures a bit, nothing more than that, but Ive got a huge amount of that work to do in the articles that I have already written so it may be a while before I can get to it, and probably by that time you will have fixed them up anyway. I have been trying to tweak the agardite images and it is a bitch, because on some of the localities I want to use ten or more images to illustrate them. I am learning as I go along. I have not had a problem in keeping the images and localities straight. I use a notepad and go through the galleries and when I see an image that looks good I first select and copy the locality and stick that in the note pad, and then I copy the URL for the image and paste that in just below the locality and the same for any other images from that locality that I may want to use. I also try to roughly select the best or better ones for that locality and put it/them at the top of the list. When I have all the localities and images I want on the notepad I then go and put them in the article where they should be. I find it also helps to at first place them all in the article one above the other using the tourmaline button. Then I select the main one I want as the lead in image and put it in place and decide how big to make it. You can then more easily put images of the same height together and I sometimes even will measure their height with a ruler right on the screen You can then place images of the same or nearly the same height on the same line and the result is much neater than placing images of unequal height on the same line. Tweaking them around to making them look good together and putting in the captions is a bit tedious, but the result looks good.

Rock Currier
Crystals not pistols.
avatar Re: Atacamite
April 11, 2009 05:40AM
Rock
thanks again for your advice - you do need to be quite organised doing this I find, and your idea of compiling it all first in a separate file is a good one. As usual the last 10% of the job takes 90% of the time.
Ralph

Regards,
Ralph
avatar Re: Atacamite
April 11, 2009 07:53AM
Ralph,
The lists can be compiled rather quickly using the mouse to select, copy and paste method. You may have noticed the extensive lists in the quartz and calcite threads. They were all compiled that way. I hope to do the same thing for the fluorite, barite, gypsum and probably tourmaline threads. I am think about making one forum only for Tourmaline. Jesse Fisher says he is thinking about tackling tourmaline and we are talking about putting all the tourmalines under one topic like quartz perhaps which will include amethyst, citrine, agates, opal etc. There is nothing to say we can duplicate some of the data and place it in threads of their own like Rossmanite and Povondraite for those people looking for those minerals and not realizing that we have put it in the tourmaline forum. There are many minerals like this. Apatite, Axinite, Apophyllite etc. I am thinking to group them all together and then in the thread for that mineral break them out like Agardite-(Ce), Agardite-(etc.). How do you feel about this? I am still wondering if we should put all the beryls together or if we should break out in a separate list things like amethyst etc. If we can eventually get this thing into some kind of searchable database, then it would be simple to call up all the amethyst, elbaite etc. Search by locality like Washington, and in a second or two get a Minerals of Washington. One can dream.

Rock Currier
Crystals not pistols.
avatar Re: Atacamite
April 11, 2009 12:14PM
Rock
I have been compiling data for dundasite, axinite and stichtite, mostly because I have written on them already, so could cheat a bit. I had wondered whether to include all axinites, and probably will do as you suggest. For starters the Broken Hill axinite-Fe is probably axinite-Mn.
Personally I would like to see all beryls together and probably tourmalines too. I know the tourmalines in some sites can cover several species names, and some people call all black tourmaline schorl, which is often wrong. I would personally prefer them to be called tourmaline unless you know the exact chemistry and know its consistent through the deposit. Collectors do like to guess at specific names though. Apatites & apophyllites etc can also get messy and may be best listed together too. Agardite has set the precedent. I have already included amethyst and smoky quartz with quartz - hoping its OK - as you say we can easily setup a separate article later if desired.

Should I upload what I have for dundasite, axinite and stichtite (basically lists like yours) or wait until I get more data?
Ralph

Regards,
Ralph
avatar Re: Atacamite
April 11, 2009 09:38PM
Ralph,
I would say put what you have up there even if it is only lists. The more we have up the more people will chip in with good information and offers to help. I think we should put all axinites in the same thread. I have written some stuff about axinite and I should probably put up what I have written, buggy and incomplete as it is. If we wait till we get it just perfect the project will never make much progress. If people don't realize this whole Best Mineral thin is a construction project, they soon will and we all love to watch construction don't we.

Rock Currier
Crystals not pistols.
Re: Atacamite
April 12, 2009 06:26PM
    
avatar Re: Atacamite
April 13, 2009 12:40PM
I give up - what was deleted?

Regards,
Ralph
avatar Re: Atacamite
April 13, 2009 01:00PM
    
A photo
avatar Re: Atacamite
April 13, 2009 02:01PM
I did figure that, but if something was removed from the article its not obvous what.

Regards,
Ralph
avatar Re: Atacamite
April 13, 2009 02:22PM
Rock
I have shuffled this thread about as for quartz - hope its OK? This power could go to my head!
Ralph

Regards,
Ralph
avatar Re: Atacamite
April 13, 2009 03:27PM
    
You should be able to see who edited the posting and what was changed (red - delete; green-added)

At end of post:
Edited 9 time(s). Last edit at 04/13/2009 09:10AM by Ralph Bottrill. (view changes)

Click "view changes"
avatar Re: Atacamite
April 14, 2009 10:09AM
Thanks David - another day another new trick!

Regards,
Ralph
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