Characteristics of salt lake boron deposits and magnesium borate deposits of the Qinghai-Tibet Plateau, China

被引：4

作者：

Zheng Mian-Ping ^{[1
]}

Qi Wen ^{[1
]}

Yuan He-Ran ^{[1
]}

机构：

[1] Chinese Acad Geol Sci, Open Lab Saline Lake Resources & Environm, Beijing 100037, Peoples R China

来源：

Mineral Deposit Research: Meeting the Global Challenge, Vols 1 and 2 | 2005年

关键词：

salt lake; borate minerals; deposit; Qinghai-Tibet Plateau; Cenozoic;

D O I：

10.1007/3-540-27946-6_287

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

Source materials of boron in salt lakes of the Qinghai-Tibet Plateau were mainly derived from anatectic magma of the Cenozoic lower crust and geothermal water and formed borate deposits in lowstand lakes under terminal late Pleistocene-Holocene cold-semi-dry-cold conditions. Different salt lake hydrochemical types have different boron specializations. The borate minerals are dominated by sodium borate with subordinate sodium-calcium borate (ulexite) for carbonate-type salt lakes and by magnesium borate with subordinate calcium-magnesium borate and sodium-calcium borate for sulfate-type salt lakes. Under supergene conditions, borates are liable to secondary mineralization and carbonation. There are three types of magnesium borate deposits on the plateau: (1) pinnoite-ulexite deposits, (2) inderite-kurnakovite deposits, and (3) pinnoite-kurnakovite deposits.All of them have industrial value,and especially the second and third types can also be directly used as glass fiber material. These magnesium borate deposits have been mined substantially.

引用

页码：1123 / 1125

页数：3