Jan 17 (Reuters) - Australia's Lynas Rare Earths reported a nearly 4% rise in its second-quarter sales revenue on Friday, helped by optimised product mix, with favourable foreign exchange rates further adding onto its revenue rise.

The world's largest producer of rare earths outside of China said its sales revenue rose to A$141.2 million ($87.69 million) in the three months to Dec. 31, compared with A$136.2 million a year ago.

That missed Visible Alpha consensus estimate of A$154 million.

($1 = 1.6103 Australian dollars)

(Reporting by Aaditya Govind Rao and Rajasik Mukherjee in Bengaluru; Editing by Alan Barona)

((mailto:Aaditya.govindrao@thomsonreuters.com))