Without going into too much detail, yes, yes there are. The easiest way to deal with them is by using the built-in codes from CJB's x-ray and Zombe's modpack to disable those features; besides that, using a mod that disrupts x-raying by making all blocks appear as ores when in this mod can help, such as Ore Obfuscator.
EDIT: This will not solve all problems; the best methods fail in regards to this, and you should have a detection mod available to show unlikely rates of acquisition.
The main page has a Tekkit page that shows all mods included.
For those unable to go the the homepage themselves: Tekkit. (Hint: Scroll down on this page)