Rensselaer Semi-Weekly Republican, Volume 36, Number 67, Rensselaer, Jasper County, 15 April 1904 — Trees Turned to Opal. [ARTICLE]

Trees Turned to Opal.

Most people have heard of the petrified forest of Arizona, but few are •ware of the existence of another petrified forest In Montana, of equal extent and more remarkable than in Arizona. The Arizona petrified forest Is peculiar for the reason that entire trees and logs have been turned to agate by the~action of the elements. That of Montana is still more remarkable, for the reason that trees and logs have been changed to 'opal iustead of to agate, making a peculiar and beautiful ornamental stone. It is not unusual to find logs and trees converted to agate, chalcedony, silica and quartz; but, aside from the Montana petrified forest, there is probably not another example of opalized wood in the world. >;