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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  12-May-2023 by Nicole Barlow (NB)

Summary Help Help

NMI
Name ROMAN, MAIN, ROAM, WATSON, EAST, BARITE Mining Division Liard
BCGS Map 104P098
Status Prospect NTS Map 104P15E
Latitude 059º 59' 54'' UTM 09 (NAD 83)
Longitude 128º 35' 16'' Northing 6651297
Easting 522994
Commodities Silver, Lead, Zinc, Copper Deposit Types E14 : Sedimentary exhalative Zn-Pb-Ag
I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt Omineca Terrane Slide Mountain
Capsule Geology

The Roman prospect is located on the southwest bank of the Liard River, approximately 10 kilometres southeast of the town of Watson Lake, Yukon. Exploration of the prospect has included areas across the Liard River and into the Yukon.

The Watson Lake region lies within the Omineca tectonic belt of the Canadian Cordillera, to the east of the Tintina Northern Rocky Mountain Trench, and contains three assemblages: the Cassiar terrane, Earn Group and Slide Mountain terrane. Regional mapping by H. Gabrielse of the McDame (1963) and Watson Lake (1967) map areas has identified predominantly Proterozoic to Mississippian marine sedimentary rocks with some Jurassic to Neogene intrusions (Assessment Report 37891).

Bedrock exposure on the property is limited to shorelines and in the Liard Canyon, where beds of predominantly shale, argillite, slate, mudstone and sandstone are well exposed along the steep canyon walls. Outcrops along the canyon on the British Columbia side of the border were first mapped as Sylvester Group by Gabrielse (1963) and described as being similar to the limestone-quartzite-siltstone-slate sequence on the Alaska Highway. The same outcrop in the canyon on the adjoining map sheet to the north was subsequently mapped by Gabrielse (1967) as Cambrian-Ordovician dark-grey and black, non-calcareous argillite, slate and phyllite. Recent mapping by the British Columbia Geological Survey has identified Devonian-Mississippian Earn Group strata in the Liard Canyon and an overlying, possibly Mississippian-Permian chert unit (Ferri et al., 1997; Assessment Report 37891).

The Main showing is hosted by units of phyllite, sandstone with quartzite and black shale of the Cambrian to Mississippian Road River and Earn Groups. The showing is highly altered (iron oxidation), bleached and structurally deformed with shearing and thrust faulting.

The Main showing is located on the south bank of the Liard River and consists of lenses of massive, very fine-grained galena and sphalerite hosted in grey calcareous mudstones. The zone, in particular the sandstone unit, is highly silicified and hosts a network of quartz veinlets. The lenses are 20 centimetres wide and exposed above the river for a distance of approximately 10 metres. A typical assay from these lenses is 277 grams per tonne silver, 46.3 per cent lead and 22.6 per cent zinc (Assessment Report 34021). Approximately 100 metres east, a zone of silicification at the contact between shales and quartzite contains patches of galena, sphalerite and tetrahedrite. A channel sample across 0.6 metre from this zone yielded values of 282 grams per tonne silver, 0.2 per cent copper, 24.95 per cent lead and 2.23 per cent zinc (Assessment Report 34021). Several selected grab samples from the Main showing were collected; sample M 02 assayed 149 grams per tonne silver, 4.39 per cent lead and 5.65 per cent zinc and sample MS 04 assayed 361 grams per tonne silver, 3.88 per cent lead and 2.70 per cent zinc (Assessment Report 34021).

On the north shore, opposite the Main showing, a 15-metre thick unit of chert and calcareous grit occurs at a shale and sandstone interface. The grit contains rounded chert pebbles and elongate shale clasts in a sandy matrix. Quartz lenses and cross fractures in phyllite are mineralized with argentiferous galena and locally with tetrahedrite.

Mineralization observed elsewhere on the property includes traces of galena, sphalerite, chalcopyrite and tetrahedrite and is associated with narrow quartz veins and quartz stockwork. These veins generally strike east to northeast and dip steeply, or are concordant with bedding.

The earliest reference to exploration in the area was made by G.M. Dawson in 1886, who noted argentiferous galena in the lower Liard Canyon.

In 1962, the Jim and Moose claims were staked by F. Lutz to cover two showings on the Liard River. Between 1965 and 1975 the claims were staked several times under different names. Minor trenching was conducted in 1969, 1971 and 1973.

In 1979, the area was staked as the Roman 1-16 claims by J. Melynchuck and optioned to St. Joseph Exploration. Geological mapping and geochemical soil sampling were performed in the Barite showing area (Yukon).

In 1980, Logan Mines optioned the property and drilled two holes totalling 123.1 metres at the Barite showing in the Yukon. A limited Electromagnetic 16 survey was performed around the Main showing, located in British Columbia.

In 1981, Logan Mines conducted 9.2 kilometres of soil sampling and magnetic surveying in the Barite and Main showing areas. Detailed geological mapping and sampling of the showings was also performed.

In 1983, the Rom and Man claims in the Yukon and the Rom 2 and Vent 19 claims in British Columbia were staked adjacent to the original Roman 1-16 and Rom 50 claims.

In 1984, Billiton Canada Ltd optioned the property and carried out 65 kilometres of grid line cutting, induced polarization, resistivity, electromagnetic (VLF and HLEM), magnetometer and gravity surveys over a major part of the property. A geochemical orientation survey was also completed.

In 1985, an access road from Lucky Lake on the Alaska Highway to the West showing was constructed by J. Melnychuck.

In 1986, Samarkand Resources optioned the property and performed 46 kilometres of line cutting, Genie EM (horizontal loop), electromagnetic (VLF) and proton magnetometer surveying. Geological mapping and sampling are also conducted. In the same year, the JM 1 and 2 claims were staked by Melnychuck in British Columbia, to the south of the existing claim group.

In 1996, KRL Resources Corp staked the ground and performed airborne and ground geophysics, soil geochemistry and minor prospecting. The Luck 1-10 and Lee 1-20 claims adjoining KRL's property were optioned from Nu Lite Industries. A program of follow-up backhoe trenching was conducted in the fall.

In 1997, KRL Resources completed diamond drilling, totalling 748 metres, in five holes, plus trenching and soil sampling. Holes 1, 2 and 3 tested geophysical anomalies along the west side of the Liard Canyon; holes 4 and 5 were drilled on-strike with a barite vein exposed on the south cliff face of the Liard River.

In 2011, reconnaissance surveys consisting of preliminary mapping and sampling on the eastern portion of the Roam Watson mineral claims (British Columbia side) was conducted by J.T. Shearer and D.G. Cardinal.

In 2012, several days were spent prospecting and mapping outcrops along the Liard River and particularly around the Main showing (British Columbia side) and Barite showing (Yukon side) on behalf of Homegold Resources Ltd.

In 2018, a sampling program collected 35 rock samples for portable XRF analysis on behalf of Homegold Resources Ltd. Most samples were from known zones near the banks of the Liard River.

Bibliography
EMPR ASS RPT *9855, *12731, *17618, 25065, *25516, *33454, *34021, *37891
EMPR BULL 107, p. 105
EMPR EXPL 1981-137
EMPR FIELDWORK 1987, pp. 245-248
EMPR GEOS MAP 1998-10
EMPR OF 1989-19; 1996-11; 1997-14; 2000-22
EMPR PF (Prospectus - Samarkand Resources Inc., 1987)
EMPR PFD 20185
GSC MAP 1110A
GSC MEM 319
GSC OF 2779
Harms, T.A. (1986): Structural and Tectonic Analysis of the Sylvester Allochthon, Northern British Columbia, Implications for Paleogeography and Accretion, Ph.D. Thesis, University of Arizona

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