摘要
雅山黄玉锂云母花岗岩是雅山复式岩体的最晚阶段岩体 ,具较高的磷含量 (WP2 O5 =0 .1 5%～ 0 .55% ) ,长石矿物是磷的主要赋存矿物 ,磷以PAlSi-2 替换方式进入长石结构中 ;锆石是雅山花岗岩重要的稀有元素副矿物之一 ,它除了高度富铪、铀外 ,与一般锆石相比 ,还表现出显著富磷的特征 ,P2 O5含量变化主要为WP2 O5 =0 .2 3 %～ 4 .96%。磷主要以 (Y ,HREE ,Fe) 3 + P5+ (Zr,Hf) 4+ -1Si4 + -1、Al3 + P5+ Si4 + -2 、P5+ Al3 + Si4 + -1Zr4 + -1等替换方式进入锆石晶格中。富磷锆石是岩浆高度演化的结果 ,可以看成是高磷花岗岩的一种特征矿物。
The Yashan topaz lepidolite granite was emplaced at the latest stage of the composite batholith, and has a high phosphorus content (0.15～0.55 wt%). Feldspars are the main reservoir of whole rock phosphorus, and the phosphorus goes into feldspar's structure by way of PALSi 2 substitution. The zircon is one of the important rare element accessory minerals in the Yashan topaz lepidolite granite. In addition of being rich in Hf and U, it is highly rich in phosphorus, different from ordinary zircon, and its P 2O 5 contents vary mainly in the range of 0.23～4.96wt%. The phosphorus goes into zircon's structure mainly by way of (Y,HREE,Fe) 3+ P 5+ (Zr,Hf) 4+ -1 Si 4+ -1 , Al 3+ P 5+ Si 4+ -2 or P 3+ Al 5+ Si 4+ -1 Zr 4+ -1 substitution. The P rich zircon is the product of a highly evolved magma, and is might be one of the important characteristic minerals in the high P granite.
出处
《矿物学报》
CAS
CSCD
北大核心
2000年第1期22-27,共6页
Acta Mineralogica Sinica
基金
国家自然科学基金!(批准号 :49673 183和 4963 2 0 80 )资助
关键词
富磷锆石
黄玉钾云母花岗岩
矿物
P rich zircon
Al 3+ P 5+ Si 4+ -2 substitution
P 5+ Al 3+ Si 4+ -1 Zr 4+ -1 substitution
