Some people have started to comment that my puzzles are becoming much too easy to solve.
So, in response, here is one that you may find a bit harder!
The true location of the cache is N 50 5A.BCD W 000 5E.FGH, where
A = Zr minus Co
B = Os
C = Th minus Ca
D = Ni
E = Pd
F = Cu
G = Fe
H = Ti plus Bi
A correct solution of the puzzle will give you a checksum (total of all 15 digits) equal to 47