A fractional crystallization model for the deposition of argentian tetrahedrite
A fractional crystallization model for the deposition of argentian tetrahedrite
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DOI：
10.2113/gsecongeo.79.3.448
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发表时间：
1984-05
期刊：
影响因子：
5.8
通讯作者：
C. Hackbarth;U. Petersen
中科院分区：
文献类型：
--
作者：
C. Hackbarth;U. Petersen
对天然热液四面体的电子显微探针分析表明，大多数样本的成分是异质的。显示三种常见固溶体的天然四面体的简化公式为 (Cu, Ag) 10 (Fe, Zn) 2 (Sb, As) 4 S 13 。每个样本中 Ag 和 Sr 的变化呈正相关。然而，不同样品的线性相关性的数学斜率和截距是不同的，并且样品的整体成分随着矿床内的位置而变化。对来自爱达荷州科达伦、秘鲁奥尔科潘帕和朱尔卡尼的四面体进行了近 5,000 个新的点分析，以记录这些观察结果。当特定的沉积位点在不同时间接收到或多或少演化的流体时，单个样本内的异质性可能会出现。--修改后的期刊摘要。
Electron microprobe analyses of natural hydrothermal tetrahedrites reveal that most specimens are heterogenous in composition. A simplified formula for natural tetrahedrite, showing the three common solid solutions, is (Cu, Ag) 10 (Fe, Zn) 2 (Sb, As) 4 S 13 . Variations in Ag and Sr are positively correlated within each individual sample. However, the mathematical slopes and intercepts of the linear correlations are different for different samples, and the bulk composition of the samples varies with position within the ore deposit. Nearly 5,000 new point analyses are presented for tetrahedrites from Coeur d9Alene, Idaho, and Orcopampa and Julcani, Peru, to document these observations. Heterogeneity within a single sample could arise when a particular depositional site receives more and less evolved fluids at different times.--Modified journal abstract.