Geophysical surveys near Strontian, Highland Region

Reconnaissance VLF-EM and magnetic surveys have bean carried out over Ba-
Pb-Zn prospects in an area near Strontian in the Highland Region of Scotland.
Rather than attempting to detect the economic minerals directly, which is
unlikely to be practicable by geophysical methods, the trials concentrated on
exploration for the crush zones and associated Permo-Carboniferous basic dykes
which act as hosts to mineralisation. The results are encouraging, with the
VLF-EM method proving effective in delineating crush zones while magnetic
traverses detected the basic dykes. To the east of Bellsgrove mine a crush zone
and dyke extend eastwards along the strike of the Strontian Main Vein; however,
to the west of the Whitesmith mine the evidence of a westward extension of the
Main Vein is insubstantial. A number of crush zones and associated dykes have
been identified in the Corrantee-Whitesmith area. Probable ext_ensions are
indicated to a number of known veins in the vicinity of the Fee Donald mine.
The rss~llts merit geophysical, geological and possibly geochemical follow-up.