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Improving Mindat.orgthe purported occurence of Arsenolite and Realgar at Lövåsen

3rd Dec 2009 11:29 UTCAksel Österlöf Expert

(http://www.mindat.org/loc-10033.html)

In Nils Zenzén “Studier i och rörande Bergskollegi mineralsamling” (AKMG vol6 no 20 page 2&3- in Swedish- 1922)

1. He writes that according to his knowledge no one has confirmed the occurrence of arsenolite in Sweden.

Flink ( AKMG 1910) do mention it but the samples are clearly of anthropogenic origin (NZ) one of them labelled as “arsenikblüthe” by Axel Erdmann. Zenzén mention that two samples occur in the Bergskollegi collection which nowadays is in the NRM.

2. Under the header “auripigment och realgar” on page 3 he write that “through studies of A Erdmann’s labelling it is clear that he could not have been unaware of the fact that one got arsenic products at the Lövåsen plant. Strongly colour arsenic products labelled as “auripigment och realgar”& Lövåsen - where common in collections during the 19th century, also in the Museum of Natural History (Stockholm).

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In 1992 when I (AÖ) worked with the School of Mines collection (Luleå) I came across some suspicious looking samples without labels. The white material are octahedral crystals together with yellow and red stuff- rather compact. Comparing this material with the collection in Uppsala where I also found “arsenolite xx from Lövåsen” perched on something like charcoal and as well similar yellow stuff. Luleå and Uppsala material clearly show both flow structures and rounded cavities which indicate a non natural origin.

In the reply by former curator Bengt Lindqvist at the Museum of Natural History (NRM) he confirms that their samples from Lövåsen as well seem to be heated.

Much obliged if you delete these two minerals from the Lövåsen list, or at least add: ??????????????

Rgrds

Aksel Ö.

3rd Dec 2009 12:41 UTCAlfredo Petrov Manager

Thank you, Aksel.