Hydrated arsenate containing hydroxyl, bismuth-bearing and uranyl mineral
Crystal System: Isometric
Specific gravity: 5.7 calculated
Colour: Brown to lemon-yellow
Solubility: Slowly soluble in dilute hydrochloric acid
At the type locality, the Walpurgis Flacher vein, Weißer Hirsch Mine, Neustädtel, Schneeberg, Erzgebirgskreis, Saxony, Germany, asselbornite was found initially on a museum specimen, and later from a specimen at the locality as well formed translucent brown to lemon-yellow cubic crystals to 0.3 mm. Associated minerals include metauranospinite, uranophane, uranosphaerite and quartz (AM 69.565-569).
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