Board Thread:Questions and Answers/@comment-2.103.80.36-20130408162600/@comment-3552584-20130408172845

I think that the issue stems from those RedPower ores having the same base ID# of 254, but different damage values to distinguish them. The ID#s used in Tekkit are as follows:
 * 254 - Ruby Ore
 * 254:1 - Green Sapphire Ore
 * 254:2 - Sapphire Ore
 * 254:6 - Tungsten Ore
 * 254:7 - Nikolite Ore