Wuhuaite occurring at Baishuijiang, Lueyang County, Shanxi Province, is a kind of material for stone carving.It has kaolinite as the major mineral compo- sition; and also contains small or negligible amounts of limonite,hematite, barite; alunite, gibbsite and cazbon materials. Chemical composition of kaolinite is SiO2 45.54 %，TiO2 0.05%，A1203 39.21%，Fe2O3 0.21%，Fe0 0.068%，MnO 0.016%，Ca0 0.22%，Mg0 1.33%，H2O+ 13.72%，K20 0.06% and Na2O 0.036%， totally 100.46%. Its crystallochemical formula is (Al3.985Fe(+3)0.013)3.988Si3.923O10(OH)8.Unit cell parameters: ao=5.142±0.006; bo=8.947±0.011; Co=7.363±0.009A; a=91º42´±11´; β=104º22'±11';γ=89º37±11'; V=328.007±0.503A.This paper alsb provides data of kaolinite obtained by various means such as X-ray powder diffraction, differential thermal analysis, infrared spectroscopic analysis and electron microprobe analysis, which prove it to be a kind of kaolinite with high order of degree and good crystalliuity. Formed in a specific geological environment, wuhuaite belongs to hard clay without natural plasticity and has hard, fine and smooth quality suitable for carving.Composed of clay minerals,it is a natural material for stone carving.