Elec-tron microprobe analyses of seven samples gave: Tl (19. 57 ), Pb (19. 01 ), As (34. 51 ), S(25. 91), Fe (0. 06), Sb (0.03), Hg (0. 07), Ag (0. 04) and Cu (0. 01), totaling (99. 21).

• 电子探针7个作品平均化学成分（重量%25）：Tl（19.；57），Pb（19