Building blocks for the new LDS hall
Deseret News 1Jun99 C6
By Alan Edwards:

IDAHO FALLS, IDAHO -- The new assembly building of The Church of Jesus Christ of Latter-day Saints is being faced with granite acquired as loose stones from Little Cottonwood Canyon. This is the same stone from which the Salt Lake Temple was built. Idaho Travertine in Idaho Falls, Idaho has the contract to quarry 14,000 to 21,000 tons of granite from Little Cottonwood Canyon, haul it to their cutting facility, cut it into approximately 1,129 pieces and deliver it to the Salt Lake construction site. Idaho Travertine is operating 24 hours a day, six days a week to meet the material demands of the construction deadline of April 2000 General Conference of The Church of Jesus Christ of Latter-day Saints.

Webster's New Collegiate defines travertine as crystalline calcium carbonate...formed by deposits from spring waters.