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The Miocene Nyalam leucogranites from the South Tibetan Himalaya consist of two-mica leucogranite and tourmaline leucogranite, in which tourmaline is an important constituent in nodular tourmaline-quartz segregations. Within the two-mica leucogranite these nodules display two basic morphologies: rounded (2mg-ro type) and radial or dendritic (2mg-ra type). The nodules in the tourmaline leucogranite...
An integrated major element, trace and rare earth element, and stable isotope (B, Si, O and S) study has been carried out on the Houxianyu borate deposit, eastern Liaoning, China. The present-day mineralogy of the deposit is closely similar to that of magnesian skarn deposits and the borates are underlain by granite; however, the geochemical and isotopic evidence does not favour a skarn-type origin...
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