This is from MNR s quartly report Dec 2001 .It makes for some...

This is from MNR s quartly report Dec 2001 .
It makes for some very interesting reading in comparison to Tas s recent announcemnet of the marathon drillhole MSI . I ll be very interested to see the assay results of the hole.

MNR 2001 report
Prominant Hill
Drill hole DDH URN 1 intersected the following at the Prominent Hill prospect:
107 metres at 1.94% copper, 0.65 g/t gold, 1.6 g/t silver, and
152 metres at 1.1% copper, 0.61 g/t gold, 2.6 g/t silver, 267 ppm uranium.

The hole was drilled on the northern edge of a well-defined gravity anomaly which exceeds 2,000 metres length and varies in width from 150 to 400 metres approximately.

The geology and geochemistry encountered in this hole is typical of what would be expected from a mineralizing system similar to that at Olympic Dam.
Prominent Hill
Drill testing of the gravity anomaly at Prominent Hill resulted in significant intersections of copper-gold mineralisation within haematite breccias. The results were summarised in a release on 27 December which announced:
"The hole intersected, from surface, 108 metres of Mesozoic and Permian shale and sands before encountering basement (figure 2). The upper 92 metres of basement (108 - 200 metres) consist of brecciated, fractured and haematite-veined metasediments/tuffs, which convert, at 200 metres, to a haematite-silica breccia with highly altered haematite-sericite-silica clasts. The breccia extends to an in-hole depth of 581 metres, interrupted by an unmineralised dolerite dyke and weakly brecciated metasediment, over the interval 307 - 429 metres. The dyke is interpreted to be a late-stage, sub-vertical feature and thus to be significantly thinner in real width. At 581 metres, to the end of the hole (720 metres), interbedded volcanics, agglomerates and silica-haematite breccias with minor dolerite dykes were intersected.

As illustrated (Figure 2), the upper portion of the basement contains a 20 metre zone of enriched gold, averaging 3.03 g/t, with copper mineralisation commencing with the appearance of the matrix-supported haematite breccia at 200 metres. Copper occurs chiefly as chalcocite (Cu2S) to 450 metres where it is replaced by chalcopyrite (CuFeS2) and bornite (Cu5FeS4). Anomalous uranium (17 metres at 1398 ppm U) and fluorine are noted with the appearance of chalcopyrite. The most significant copper mineralisation occurs from 200 to 307 metres (107 metres at 1.94%, including 35 metres at 3.86% from 272 metres) and 429 to 581 metres (152 metres at 1.1%).

The contact between the younger sediments and basement is interpreted to be horizontal while those between the dykes and breccias are thought to be sub-vertical. The bedding/foliation within the lower volcanics is measured at about 60 degrees to the core axis with the suggestion that the hole has passed through a broad, steeply south-dipping fissure into the host volcanic rocks."