Chromian muscovites and epidotes from Outokumpu, Finland
Chromian muscovites and epidotes from Outokumpu, Finland
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产自芬兰奥托昆普的铬白云母和绿帘石
DOI：
10.1180/minmag.1987.051.362.14
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发表时间：
1987
影响因子：
2.7
通讯作者：
P. Treloar
中科院分区：
文献类型：
--
作者：
P. Treloar
摘要芬兰的Outokumpu区域是与大量硅酸盐和与大量硫化物沉积有关的大量硅酸盐和氧化物相值得注意的。在本文中，介绍了富含CRICH的阶段的富含CRICH阶段，并介绍了棉植物基团。在八面体位点，麝香木型相显示的A1最大替代为A1，最大为24.7 wt。％CR2O3。指示了这种极端组成和紫红色的麝香箱之间的明显完全固体解决方案。 ClinosoIte类型相具有最大15.4 wt。％CR2O3，其组成接近Ca2cral2si3O12（OH）。与云母一样，指示了临床岩结构中Al的Cr的完整固体溶液。
Abstract The Outokumpu region of Finland is notable for the large number of Cr-rich silicate and oxide phases associated with the massive sulphide deposits. In this paper analyses of Cr-rich phases in the epidote-clinozoisite and muscovite groups are presented. The muscovite-type phase shows a maximum 80% substitution of Cr for A1 on octahedral sites with a maximum 24.7 wt.% Cr2O3. Apparent complete solid solution between this extreme composition and the fuchsitic muscovites is indicated. The clinozoisite type phase has a maximum 15.4 wt.% Cr2O3, with a composition close to Ca2CrAl2Si3O12(OH). As with the micas, complete solid solution of Cr for Al in the clinozoisite structure is indicated.