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- Title
The South Tally Pond project: a high-grade, polymetallic VMS discovery.
- Authors
Copeland, David A.
- Abstract
The South Tally Pond VMS Project is located approximately 20 kilometres southwest of the Duck Pond Mine. The property is underlain by Cambrian to Ordovician bi-modal volcanic and sedimentary rocks of the Tally Pond Volcanic Belt. The property is host to the Lemarchant Zone which is currently defined via surface geological mapping and geophysics over a strike length of 1.5 kilometres and has been tested by broad spaced reconnaissance style drilling (15 holes) by Noranda from 1988 to 1993. The Lemarchant Zone is centred within the larger Lemarchant alteration zone that extends for greater than 5 kilometres and is up to 700 metres wide. The zone comprises precious-metal rich massive, semi-massive and stringer sulphide mineralization that lies at a gently to moderately east dipping, north-south striking mafic (hangingwall) - felsic (footwall) volcanic contact. Base and precious metal mineralization is marked by an exhalative zone exhibiting increased concentrations of barium and barite deposition. Historic diamond drilling has returned values that include 7.4% Zn, 6.3% Pb, 0.6% Cu, 11.4 g/t gold, and 1515.0 g/t silver over 0.6 metres (LM91-01); 1.53% Zn, 59.8 g/t Ag, and 6.1 g/t Au over 3.8 metres (LM92-08); 4.5% Cu, 5.70% Zn, 0.33% Pb, 272.5 g/t Ag, and 1.06 g/t Au over 0.3 metres (LM92-07), and up to 18.7% Ba. At the time it was interpreted that the down-dip extent of the mineralization was limited due to offset along the shallow west dipping Lemarchant Fault. Paragon commenced drilling (6 holes for 2,848 metres) in August 2007 with the objective of tracking mineralization down dip of the previous shallow drilling, to understand the geometry and offset along the inferred Lemarchant Fault, and track the mineralized felsic stratigraphy at depth along the zone. Drilling by Paragon has outlined high grade precious metal-rich massive sulphides that assay as follows: 7.49% Zn, 0.77% Cu, 0.07% Pb, 40.29 g/t Ag, and 1.21 Au over 5.05 metres from 164.5 to 169.55 metres (LM07-13); 5.26% Zn, 1.06% Cu, 1.52% Pb, 92.56 g/t Ag, and 0.85 g/t Au over 5.40 metres from 203.5 to 208.9 metres (LM07-14); 9.46% Zn, 0.81% Cu, 2.13% Pb, 73.44 g/t Ag, and 1.85 g/t Au over 14.60 metres from 219.0 to 233.6 metres (LM07-15); and 12.38% Zn, 0.45% Cu, 2.61% Pb, 50.32 g/t Ag, and 0.74 g/t Au over 14.6 metres from 236.0 to 250.6 metres (LM07-17).
- Subjects
SEDIMENTATION &; deposition; MINES &; mineral resources; VOLCANIC ash, tuff, etc.; SEDIMENTARY rocks; CAMBRIAN stratigraphic geology; ORDOVICIAN stratigraphic geology
- Publication
Atlantic Geology, 2008, Vol 44, p55
- ISSN
0843-5561
- Publication type
Article