In slag. Colourless octahedral crystals of senarmontite, and yellow sulphur(?) crystals in other cavities. Maybe rosickýite? Senarmontite: Width 9mm. Stack of 54 images. “Sulphur”: Width 1.55. Stack of 16 images. I had to overexpose the sulphur photo to be able to capture the crystals deep inside a tiny cavity. Ex Jo Price Collection.