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File Created: 07-Dec-2010 by Laura deGroot (LDG)
Last Edit:  05-Nov-2021 by Garry J. Payie (GJP)

Summary Help Help

NMI
Name MT Mining Division Liard
BCGS Map 094N094
Status Showing NTS Map 094N14W
Latitude 059º 54' 11'' UTM 10 (NAD 83)
Longitude 125º 22' 11'' Northing 6642973
Easting 367457
Commodities Barite Deposit Types E17 : Sediment-hosted barite
Tectonic Belt Foreland Terrane Ancestral North America
Capsule Geology

The MT showing consists of nodular barite and thin pyrite horizons in carbonaceous shale and siltstone. This mineralization is hosted by the Besa River Formation and found along a west facing valley, approximately 22 kilometres southwest of Beavercrow Mountain and north of the Scatter River. The area is underlain by several units: carbonate of the Upper Silurian to Middle Devonian Dunedin Formation; shale and siltstone of the Upper Devonian Besa River Formation and Mississippian sandstone, siltstone and shale of the Mattson Formation. Rocks strike northerly, dip gently to the east and are part of a westerly directed thrust panel which carries units as old as Cambrian in the hanging wall.

Nodular barite is found over a four-metre interval in the upper part of the Besa River Formation where nodules can reach 30 centimetres in diameter and comprise up to 15 per cent of the rock. Many of the nodules contain vugs lined with fine, prismatic, needle-like crystals consistent with barite, although their composition has not been confirmed by x-ray diffraction. These vugs also give off a very strong fetid to petroliferous odour when broken. Approximately 60 metres stratigraphically above the nodular barite are found several horizons of bedded pyrite from 1 to 20 centimetres in thickness and traceable for over 30 metres in places. These horizons are also associated with iron carbonate nodules.

The area was previously explored for SEDEX mineralization and is located a few kilometres north of the SCAT minfile occurrence (094N 010) consisting of low-grade zinc, lead concentrations in iron carbonate nodules together with barite nodules, all of which are hosted by the Besa River Formation.

This area was originally staked in 1972 by Pan Ocean Oil Ltd., Frontier Resources and Bow Valley Exploration to cover barite and fluorite showings in the Dunedin Limestone formation. The ground was staked as the Scat claims by Utah Mines in late October, 1981 to cover anomalous stream sediment samples obtained during the 1980 and 1981 regional reconnaissance program. In 1982, the Utah program consisted of a soil sampling survey on a 500 x 100 metre grid, rock chip sampling and stream sediment sampling. Geological mapping at a l:10,000 scale was also completed.

In 2010, Fillipo Ferri led a Geological Survey of BC mapping crew in the western Liard Basin, during which they discovered barite and sulphide mineralization (MT showing), similar to that of the Scat occurrence (094N 010).

Bibliography
EMPR ASS RPT 10810
EMPR FIELDWORK 2011-1, p.23
GSC Map 1955A

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