yes thats your rock texture
Just a few pointers from a mapper
the line down the middle of this texture http://img10.paintedover.com/uploads/10/hl_thingy.jpg is not promient, it might need to be 1/2 or 1 pixel wider
here is the glue orignal texture [Blocked Image: http://img32.exs.cx/img32/8999/untitled1001.jpg] orignaly texture its riped from is found here - http://img67.exs.cx/img67/903/c1a4b_w1high.jpg
Also Mike (I think its yours), i though your update on the stripe would not fit, but its good as a detail texture - http://www.spaceman.de/half-life/stripes2.jpg as you can see on the last page
And this one http://www.urban.pfmnf.com/jynx/duct_wall01.jpg is good, it fits well with random edge sizes, becuase of its size, when you use the "fit" command with hammer
Adam