First of all, the geocache is not located at the posted coordinates, but you must visit them to complete the geocache.
When walking up to the given coordinates, you may notice a small stream on the western side of the path. This stream has a very distinctive colour, because it is a Chalybeate spring, which means it contains a lot of one particular mineral.
1. The number of letters in the name of the element which is found in these oddly - coloured streams. Call this number: A.
2. What is the proton number of this element? Call this number: BC.
3 This element is in the Dth period of the periodic table.
The cache can be found nearby at:
N 51° 0(A+D).(A)(B-1)(C) W 000° 00.(2A)(C-2)(D+B)