If you haven’t seen them before, there are two excellent BGS reports on the 1/10,000 maps that cover Nenthead-Alston area. They are:
CLARKE, S.M. 2007. The Geology of NY74SE, Nenthead, Cumbria. BGS Open Report, OR/07/033.
and
CLARKE, S. M. 2008. Geology of NY74NE, NW and NY75NE, SW and SE, Alston, Cumbria. BGS Open Report, OR/07/032.
both available (free) at:
http://nora.nerc.ac.uk/7887/1/OR07033.pdf and
http://nora.nerc.ac.uk/7886/1/OR07032.pdf Although strictly speaking the first report only applies to the 25 km2 covered by sheet, NY74SE much of the detail is applicable to adjacent areas and there is a rather nice map (Fig 5 p 52) that shows the fluorite/ baryte zone boundaries, the zinc zone and the major veins in the area extending from NY 690 505 in the NW to NY 826 410 in the SE ie over most of the ground that MINCO is likely to drill. There is also a cross section (Fig 4 p 51) that must run very close to the site of CA-001.
The second report is very similar but does include additional points such as references to the Whin Sill.
I've never met Nora Nerc but she sounds a canny lass!
Dave Greenwood