MacAgeMap is a Mac OS X (Tiger or later) application to calculate age maps from Thorium, Uranium and Lead intensity maps. This powerful and user- friendly software (with full Macintosh user interface, build with Cocoa) can be used for monazites, tiny Rare Earth Element phospates, which are common in a wide range of rock types. This program is currently still under development and not for public free download. Contact me if you are interested in this software.