Is there anyone out ther hwoknows where i can find this or wher eit might drop from? I need some to make a piece of armor. Any & all help is greatly appreciated. Thanks again.

Like all the specialty leatherworking items, these are hard to come by.  You will need to go farm the rock elementals in the Badlands extensively if you wish to get four of these for the helm.

Everything you ever wanted to know about Cores of Earth can be found at http://thottbot.com/i7075, including the loot table.

Best of luck!

A good place IMO is far north west Sithilus. Off the rock elementals there. Even then, the drop rate is quite low. expect to farm only 2-3 every hour.

So if you're not >lv60, you're gonna need help, or wait until someone nice sells em cheap on AH. (unlikely as I said, the drop rate is low)

Personally if I was farming these to sell on AH, I'd expect a reasonably good return for my effort.

I got my Core from Silithus and Tanaris. Tanaris was mixed with Gusting vortexes (they give breath of wind) and land ragers. There is only a few of them on the map, but once u get to know the pattern of the circle it gets really easy. Best if ur a hunter for tracking.

I usually pick up a few every time I run through Maraudon