Lucky detour science skill question

Hello, I have two questions regarding the Lucky detour science explorer skill.
First, according to this link http://www.settlersonlinewiki.eu/guides/explorer/ in the medium search there is a 2.7% for finding 50 granite and a 1.4 % chance for finding 100 granite. Does the lucky detour increase the chance of finding the 50 or 100 granite ?
The second question is that if the chances of finding granite are increased, then does anyone know what are the new percentages of finding the other other resources in the medium search (gold, marble, hardwood)

I am also wondering that I could also be completely off track on this, and the granite find is separate from the normal finds and, similar to some geologists skills, sometimes gives extra granite ON TOP of the normal treasure find. I would rather have someone tell me I have completely misunderstood this, than finding out after I have committed my manuscripts into the skill tree.

Thanks.

There is a guide coming out within the next few days, could be even today... watch for LordStevie's New guides on Explorer / Halloween as well!

If Granite chance is 'increased' the other resources chance needs to 'decrease' something got decreased and we don't know what the % are. Would be helpful to know what the new % chances are.