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Aschamalmite

Posted by Rock Currier  
avatar Aschamalmite
May 26, 2009 07:37PM
©


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This article is a place holder and needs someone to take it in hand and finish the first draft. If you would like to take this article in hand, leave a reply message below or contact Rock Currier via private message by clicking on the PM button next to my name at the top of the article.



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This article is in a pre-construction phase.
Someone is needed to work on this article which contains a few preliminary notes.

1. The localities need to be brought into conformity with mindat locality strings if necessary, reversed and made bold.
2. If image links appear below they need to be embedded in the article. If none are present the Mindat image bank needs to be searched for images of this mineral and the better ones and their localities need to be placed in the article.
3. The captions for the images need to be added.
4. The images need to be tweaked so that they look nice. This last bit is tedious and requires some little artistry.



Aschamalmite
Pb6Bi2S9 Monoclinic
Aschamalmite on Quartz, Rio del Castello, Santa Maria Maggiore, Piedmont, Italy ~8mm© D: Preite



Aschamalmite
Italy
Piedmont, Verbano-Cusio-Ossola Province, Ossola Valley, Vigezzo Valley, Santa Maria Maggiore, Cedo Alp, Basso Valley, Rio del Castello


Aschamalmite Display collections?
Pb6Bi2S9
By far the largest crystals are from Austria but aschamalmite also is found at Granite Gap, Hidalgo County, New Mexico, USA.
Austria
Salzburg, Untersulzbach Valley, Ascham Alm. “The mineral occurs as lead-gray, lath-like crystals to 5 cm in length or thick, slightly bent plates up to 1 cm2. Most crystals are heavily altered to a mixture of bismutite and other as yet unidentified phases. Exsolution lamellae of galena and cosalite are commonly present. Luster metallic, cleavage (001) perfect… Aschamalmite is found in mineralized, alpine-cleft veins cutting through gneiss near Ascham Alm in the Untersulzbach Valley associated with quartz, albite, adularia, calcite, chlorite and galena.”1
1 American Mineralogist, Vol.69, p.810.



Click here to view Best Minerals A and here for Best Minerals A to Z and here for Fast Navigation of completed Best Minerals articles.

Rock Currier
Crystals not pistols.



Edited 3 time(s). Last edit at 12/27/2012 08:00AM by Rock Currier.
avatar Re: Aschamalmite
May 27, 2009 11:28AM
    
There are a few other localities within the Hohe Tauern range that produced similar material of comparable quality, among them the Leckbachrinne (this find has been documented in Lapis magazine).
avatar Re: Aschamalmite
May 27, 2009 11:39AM
If we can get some pictures and find someone to tell us about the find, we will put it in.

Rock Currier
Crystals not pistols.
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