UPDATE 2-Molycorp warns of weak revenue, cash crunch; shares fall
January 23, 2013 at 13:06 PM EST
*Sees additional $80 mln in costs for mine-expansion project. Jan 23- Rare earth producer Molycorp Inc warned of significantly lower revenue and cash flow for the first half of the year and said it will not generate enough money to fund the expansion of its main mine in California.