Long-distance lateral magma propagation may reflect the complex interaction between regional tectonics and crustal uplift. Here, we report observations on Taxkorgan intrusive (TIC) of Central Pamir. TIC is a 70 km long, 10–18 wide, north-northwest–elongated body intruded into mid-upper crust in parallel with, close to, Kongur Shan Extensional System. New zircon U-Pb dating shows that syenite sa...

We investigated hellandite-group mineral phases from the Roman Region, alkali syenite ejecta, by multimethod analyses. They show a complex crystallisation history including co-precipitation of hellandite-(Ce) with brockite, resorption, sub-solidus substitution mottanaite-(Ce), exsolution perthite-like ferri-mottanaite-(Ce), overgrowth an oscillatory-zoned euhedral shell ferri-mottanaite-(Ce) an...