Documental Report of Geological Field Investigation on “Red Feldspar” in Tibet, China

On the basis of lab researches performed in 2009 for the gemmological properties and compositions of peripheral materials of the "red feldspar of Tibet",the feldspar investigation team of National Gemstone Testing Center,China(NGTC) performed a field investigation on occurrence of international disputing about "red feldspar of Tibet" from the geology,mineral deposit,stratigraphy and geomorphology at the border area between Bailang county and Jiangzi county in Shigatse,Tibet(E29°04'01.5″,N89°20'54.8″) in May,2010.The feldspar investigation team interviewed the villagers of Mencuo and Zhalin villages,viewed the trade process and collected the "red feldspar" samples.The results show that the majority of "red feldspar" samples in the field were artificially placed on the ground surface and in the loose ground,which supports the previous deduction of lab researches in 2009.