基本解释：副钡长石
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BaO-Al_2O_3-SiO_2(BAS) glass-ceramics with stoichiometric and off-stoichiometric celsian composition were fabricated,doped with B_2O_3 for melting and sintering.用烧结法制备了化学计量比和高Ba含量的两组BaO-Al_2O_3-SiO_2(BAS)系微晶玻璃,采用差示扫描量热法(DSC)和X射线衍射分析(XRD)等手段研究了ZrO_2对BAS系微晶玻璃中六方钡长石析晶和六方钡长石向单斜钡长石晶型转变的影响。
The results show that BAS glass-ceramics with ZrO2 as nucleating agent crystallize quickly, hexacelsian nucleates from the glass at 850 ℃.结果表明:在850℃,BAS玻璃快速晶化析出六方钡长石;随着晶化时间的延长,六方钡长石逐渐向单斜钡长石转变;当晶化时间为24h时,六方钡长石完全转变为单斜钡长石。
BaO-Al_2O_3-SiO_2(BAS)glass-ceramics with stoichiometric and off-stoichiomctric celsian composition were fabricated.在化学计量比的BAS系玻璃中添加ZrO_2或者提高Ba含量,对六方钡长石的析出表现为促进作用,并且随着温度的降低或者析晶过程的进行,促进效果更加明显。
Based on the election microprobe(EMP) analyses of barite ore and host rocks of the Dahebian and Xinhuan barite deposits in eastern Guiahou,China,the paper reports hyalophane for the first time in the barite deposits,which is a typical low-temperature mineral,and its origin was analyzed based on its chemical composition,optical characters and correlation.通过对天柱大河边—新晃重晶石矿床系统的剖面勘查和采样分析,对矿石和围岩进行了系统的电子探针研究,发现在该矿床的矿石中广泛分布有钡冰长石。
