摘要
甘肃玉门发现的白钠镁矾矿产于玉门市花海芒硝矿床的下部。矿物呈白色、透明的短柱状，粒径０．２～０．８ｍｍ。实测维氏硬度为１３９ｋｇ／ｍｍ２，相当摩氏硬度２．８。Ｘ射线粉晶衍射主要数据（）为５．４８７（１０）、３．９９３（１０）、２．５８８（１２）、１．３６８（４）。晶胞参数α＝１１．１２６。化学成分为Ｎａ２Ｏ＝１７．３２，ＭｇＯ＝１１．９４，ＳＯ３＝４７．６２，Ｈ２Ｏ＝１９．３２。根据分析结果计算矿物化学式：Ｎａ２ＳＯ４·ＭｇＳＯ４·４Ｈ２Ｏ。
Astrakhanite ores were founded in Yumen,Gansu.They exist underneath Hua Hai mirakilite mineral deposit.They are with white and transparent and in short columns.The diameter of pellet are from 0.2mm to 0.8mm,its HO being 139kg/mm2,and HV2.8.Main datas of Xray crystal constant diffraction ( ) are 5.487(10),3.993(10)、2.588(12)、1.368(4).The parameter of crystal cell is 11.126.Its chemical compositions are Na2O17.32,MgO 11.94,SO347.62,H2O19.32.According to the analytical result and calculation,its chemical formula is Na2SO4.MgSO4.4H2O.
出处
《甘肃科学学报》
1996年第1期89-91,共3页
Journal of Gansu Sciences
