- Wide gold intercepts at shallow depths
- Up to 54m at 1.0 g/t gold from 8m depth down hole
- Includes higher grade up to 12m at 2.1g/t Au
- Further drilling strongly warranted
Gold intersections include -
- 7m at 1.3g/t Au from 128m depth (HSRC002)
- 13m at 1.2g/t Au from 87m depth (HSRC003)
- 54m at 1.0g/t Au from 8m depth (HSRC004)
o including 6m at 1.6g/t Au from 16m depth
o and 12m at 2.1g/t Au from 50m depth
- 1m at 4.3g/t Au from 37m depth (HSRC005)
- 10m at 0.7g/t Au from 56m depth (HSRC005)
- 5m at 1.2g/t Au from 59m depth (HSRC005)
Harry Smith Gold Prospect
At least two distinct gold-bearing quartz reefs occur at the Harry Smith prospect, termed here Golden Spray and Silver Spray (see Figure 1 in link below). The reefs were worked in three periods (1893-1902, 1911-1917 and 1937-1942) with a total recorded production of over 3,500 ounces of gold (Mines Record 2507). The first modern exploration was carried out by Shell Minerals (Higgins 1981) including drilling of 9 percussion holes in 1981. Several holes hit wide zones of mineralisation with the best intercept (PNG5, 46m at 1.3 g/t Au) drilled to the north of the Golden Spray workings.
The next important phase of exploration was carried out by Bolnisi Gold (Rangott 1996), who drilled 15 RC holes in 1995, recording numerous mineralised intercepts. In particular, the strong gold intercepts of GG95-2 (25m at 2.2 g/t Au from 16m depth) and GG95-13 (18m at 2.4 g/t Au from 73m depth) confirmed the potential of the Golden Spray area at the northwest end of the Harry Smith line of lode (see Figures 1, 2 in link below).
A review by Thomson concluded that the main Harry Smith - Golden Spray line of lode probably dipped steeply northeast, which differed from previous interpretations. The Company designed a program of southwest directed holes, in contrast to previous drilling which was directed northeast (see Figure 1 in link below).
The program was successful with all holes intersecting gold mineralisation. The northeast dip was confirmed at the Golden Spray end of the line of lode and additional gold was discovered to the northeast, notably in hole HSRC004 which recorded an intersection of 54m at 1.0 g/t Au from a depth of 8m. This intersection includes two higher grade zones - the deeper of which at 12m of 2.1 g/t Au corresponds to the northeast dipping Main line of lode. The shallower intercept of 6m at 1.6 g/t Au from 16m depth probably represents a separate splay zone.
The two other holes at Golden Spray confirmed the northeast dip of the Main line of lode with 13m at 1.2 g/t Au and 5m at 1.2 g/t Au. The higher grades (at ounces per ton gold) seen in the historic workings (Mines Record 2507) are probably confined to a high-grade shoot, which was not intersected in this program.
The picture at the southern end of the Harry Smith lode is more complicated with the intersection recorded in HSRC02 (22m at 0.5 g/t Au) considerably further west than anticipated. Further drilling is required both here and on the Silver Spray line.
The Golden Spray area will be the first priority for follow up, as it remains open along strike in both directions and at depth, with potential for multiple zones of mineralisation.
The Company considers that Harry Smith has good potential to generate significant open cuttable gold mineralisation as well as deeper high grade zones. Thomson will be prioritising this prospect for follow-up drilling which is anticipated to start in the second quarter of 2018.
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About Thomson Resources Ltd
Thomson Resources Ltd (ASX:TMZ) is an NSW active mineral explorer. Thomson has several tin projects (including an advanced project near Ardlethan), as well as gold, copper and zinc targets in a range of settings. Thomson has a good record of discovery, with multiple new Intrusion-Related Gold (gold with copper, lead, zinc, molybdenum, tungsten) systems discovered in the Thomson Fold Belt in the NW of the state.
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