| 维苏威和武尔卡诺火山碎屑物中磷灰石挥发组分的研究 |
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| 引用本文： | 刘羽,Stoppa F.维苏威和武尔卡诺火山碎屑物中磷灰石挥发组分的研究[J].矿物学报,2011,31(2):180-184. |
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| 作者姓名： | 刘羽 Stoppa F |
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| 作者单位： | 福州大学紫金矿业学院,福建福州350108; |
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| 基金项目： | 福建省矿产资源重点实验室研究基金 |
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| 摘 要： | 磷灰石中挥发分的类质同象替换可以反映其结晶时岩浆体系的成分特点。采用扫描电镜、能谱、电子探针、X射线单晶晶胞参数测定和红外、拉曼光谱,对维苏威和武尔卡诺火山碎屑物中磷灰石进行了初步研究,发现其Ca、P位置上不出现替换,主要替换形成于通道位置上。武尔卡诺磷灰石低硫富Cl,晶胞参数c/a值很小,在低压高温下形成;而维苏威磷灰石含硫稍多,通道离子主要由OH-F组成,形成于压力较大、温度较低的环境,Cl趋向于在早期喷发物中富集,而F则趋向于在晚期喷发物中富集。
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| 关 键 词： | 磷灰石 挥发分 结构通道 替换 |
Investigation of Volatile Compositions in Apatites from Vesuvio and Volcano Islands |
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| LIU Yu,Stoppa F.Investigation of Volatile Compositions in Apatites from Vesuvio and Volcano Islands[J].Acta Mineralogica Sinica,2011,31(2):180-184. |
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| Authors: | LIU Yu Stoppa F |
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| Institution: | LIU Yu1,STOPPA F.2 (1.College of Zijin Mining,Fuzhou University,Fuzhou 350108,China,2.Dipartimento Scienze della Terra,Università G.d'Annunzio,Chieti 66013,Italy) |
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| Abstract: | Volatile compositions in apatite can indicate magma evolution and eruptive-chamber modelling.The volatile in apatites from Vesuvio and Volcano islands was studied with SEM/EDS,EPMA,XRD and IR and Raman spectroscopy.It is found that main substitution among F-OH-Cl ions occurs in structural channel,and there is little substitution for the Ca sites and tetrahedral sites.The apatite from Volcano Island contains less S and much Cl,and with a small cell parameter ratio c/a,indicating the condition of lower pressu... |
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| Keywords: | apatite volatile structural channel substitution |
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