ROME (Reuters) -Parts of a mountain glacier collapsed in the Italian Alps on Sunday amid record temperatures, local authorities said, killing at least six people and injuring eight. The Trento provincial government said rescue operations were in progress after a large “ice avalanche” involving hikers, adding that there was likely to be a “heavy toll”. The avalanche took place on the Marmolada, which at more than 3,300 metres is the highest mountain in the Dolomites, a range in the eastern Italian Alps straddling the regions of Trento and Veneto. Injured people were taken to hospitals in the ne…