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WikiPedia: Arsenolit http://www.labchem.com/tools/msds/msds/LC11505.pdf http://webmineral.com/data/Arsenolite.shtml http://rruff.geo.arizona.edu/doclib/hom/arsenolite... http://www.mindat.org/min-294.html http://www.vietnamtudien.org/dnqatv/pic/bd2/b2s137... http://www.vietnamtudien.org/dnqatv/pic/bd2/b2s356... http://www.vietnamtudien.org/dnqatv/pic/bd2/b2s432...