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1989年我们在广西德保矿区发现了钡毒铁石，其化学成分为（％）：BaO8．45，Fe2O335．10，As2O538．15，K2O0．14，Al2O30．07，H2O+18．48，总量为100．38。其理想矿物分子式为Ba0.5Fe4（AsO4）。（OH）4·7H2O，与德国产出的钡毒铁石的矿物分子式［BaFe4（AsO4）3（OH）5·5H2O］有一定的差异，是毒铁石［KFe4（AsO4）3（OH）4·7H2O］的钡端员矿物。该矿物是黄绿色、浅黄色，立方体晶形，硬度H=3，实测比重D=3．00，N=l．724～l．731，均质性，常见光性异常。粉晶X射线分析主要衍射强线（um）为：O．805（200）（99），0．563（220）（23），0．399（400）（47），O．326（422）（100），0284（44O）（73），0．241（542）（33），0．178（841）（23），等轴晶系，空间群为P43m，晶胞参数a=1．603nm。
In 1989, we found the barium toxin in the mining area of Debao in Guangxi Province. Its chemical composition is as follows: BaO8.45, Fe2O335.10, As2O538.15, K2O0.14, Al2O30.07, H2O + 18.48, Is 100.38. Its ideal mineral formula is Ba0.5Fe4 (AsO4). (OH) 4 · 7H2O, which is somewhat different from the mineral formula [BaFe4 (AsO4) 3 (OH) 5 · 5H2O] of the barium toxin produced in Germany. 7H2O] barium terminal mineral. The mineral is yellow-green, light yellow, cubic crystal form, hardness H = 3, the measured specific gravity D = 3.00, N = l. 724 ~ l. 731, homogeneity, common phototropism. Powder X-ray analysis of the main diffraction line (um): O. 805 (200) (99), 0.563 (220) (23), 0.399 (400) (47), O. (44) (73), 0.241 (542) (33), 0.178 (841) (23), an equiaxed crystal system, a space group of P43m, a unit cell parameter a = 1.603 nm.