'Institute of Geological Sciences of the National Academy of Sciences of Ukraine'
Abstract
Geochemical studies in the Teign Valley, em?loying
stream sediment and soil samples, have indicated extensions
of barytes mineralisation some 2. 5 km north and 1.2 km
south of the formerly mined strike length. Ba-Pb-Zn
mineralisation is now known to extend over a total length
of 12. 3 km and over a width rarely less than O. :; km,
. though ore bodies large enough to be worked occur only
intermittently within this belt.
The part of the southern extension lying outside the
Dartmoor National Park was investigated by a programme
of deeper sampl~ng using a "'ltrac percussive drill to
obtahl powdered rock sampt"t:o for assay. To the south of
Hennock village a balytes-rich zone has been defined, some
1.2 km long and 260 m wide, within which narrower
high-grade deposits are indicated.· Base metal analyses
suggest that this barytes is relatively free from serious
sulphide contaminants but, in some cases, the iron oxide
ccntent is appreciable and the ore is highly discoloured
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