The CARIBOO RAND prospect lies 12 kilometres southeast of Horsefly, 40 kilometres northeast of 150 Mile House and 58 kilometres east of Williams Lake. Road access is via the Likely – Horsefly road from 150 Mile House to Horsefly, then the 108 Road 9.4 kilometres to Walters Lake Road, then 14.4 kilometres to the centre of the property.

The property lies within the Quesnel Trough which is comprised of Triassic Nicola Group marine sediments, volcanics and volcaniclastics intruded by Late Triassic to Early Jurassic monzonitic intrusions. These rocks are typically overlain by Eocene calc-alkaline volcanics and sediments of the Kamloops Group and Miocene flood basalts of the Chilcotin Group. The property is largely underlain by the Eocene and Miocene cover rocks with small erosional windows of monzonite. The Takomkane batholith lies immediately to the south of the property, though the erosional window on the Megaton claims may be part of this batholith.

Outcrop exposure on the Cariboo Rand property is fair to poor where mapping has identified three primary units: basaltic lava, a siltstone to sandstone unit and a monzonite intrusion. As well, one exposure of gabbro was noted, though it may be a coarser porphyritic phase of the basalt. Bedrock mineralization is concentrated in the Landing zone (Megaton North) on the Megaton claim and was discovered by H.J. Wahl and J. Brown-John in 2002. Wahl’s 1996 exploration program led to the discovery of the Landing zone where the original trenching consisted of a continuous 160 metre long trench (Trench 1). The Landing zone is a substantial zone of leached, oxidized gossan within strong to weakly altered, highly fractured granodiorite of the Takomkane batholith. The zone extends westward for greater than 500 metres from the Cariboo Rand prospect, and is open in all directions. In 2002, Trench 1 was re-opened and resampled where a series of quartz veins with intense argillic alteration envelopes and flat to gently west-dipping attitude occurs. These veins, at 1 to 3 metre intervals, number three to four within a 12 metre vertical interval. Copper mineralization, consisting primarily of malachite and azurite is common; native copper and chalcocite have also been observed. There appears to be a strong concentration (remobilization?) of copper approximately three to eight metres below present surface, suggesting a relationship with the water table. In 2006, a grab sample from trench 1 analysed 2.25 per cent copper and 0.11 gram per tonne gold; in 2002, grab samples from Trench 1 analysed up to 4.9 per cent copper and 0.48 gram per tonne gold (Assessment Report 29322).

Samples from excavations at the Landing zone in 2007 returned weighted averages ranging from 57 parts per million copper to 0.618 per cent copper for the individual trenches (Assessment Report 29804). The 2008 drilling program confirmed the presence of low-grade copper mineralization over an area measuring 800 by 200 metres. Most of this mineralization to depths ranging from 176-190 metres was in the form of native copper.

Highlights from the 2008 drill program at the Landing zone included two intersections of 0.19 per cent copper over 13.89 metres and 22 metres respectively, in hole MT08-7A and 0.10 per cent copper 53 metres in hole MT08-11 (Assessment Report 30561).

WORK HISTORY

In 1996, H.J. Wahl and J. Brown-John conducted the first work program on their Megaton and TNT projects. They completed hand trenching and preliminary excavator trenching on a gossanous copper zone in the Takomkane batholith and obtained several encouraging results with copper values from 18 parts per million to 1.07 per cent and gold values from 1 part per billion to 4.38 tonne. In 2002, Wahl and Brown-John completed excavator trenching and enzyme leach surveys. Trenching located the copper-gold Landing zone, hosting a series of flat lying subparallel quartz veins in intense argillic alteration envelopes.

In 2006, Wahl and Brown-John continued with the trenching program. They completed 410 metres of exploration trail in April and a further 200 metres of exploration trail in July. They also dug trenches at three locations along the new roads and recorded copper values from 270 ppm to 0.805 per cent and gold values from 0.01 to 0.12 gram per tonne gold (Assessment Report 25084).

In 2008, Wahl and Brown-John drilled 20 HQ/NQ diamond drill holes, at the Landing Zone, totalling 4313.6 metres. Copper mineralization was encountered in each of the 17 of the total of 20 holes that intersected the monzonite intrusive.

In 2012, Wahl and Brown-John commenced programs of mapping, silt, till and rock sampling and trenching on their Megaton claim, in an area southwest of the Cariboo Rand Landing zone (see Megaton Minfile). A successful drilling program was achieved at Megaton South in 2013.

In 2016 and 2020, Consolidated Woodjam Copper Corp. carried out IP/Resistivity surveys over four areas of their large consolidated property. One of these was the Woodjam Southeast zone IP grid extended onto the Megaton Option towards hole MT13-04. The IP survey of the Megaton Area and extending east from the Woodjam Southeast zone shows a broad linear chargeability anomaly on the 200 metre and 400 metre depth slices that extends 3.7 kilometres to onto the Megaton Option and towards the Cariboo Rand (Assessment Report 39382).

In December 2022, Consolidated Woodjam Copper Corp. became a wholly-owned subsidiary of Vizsla Copper Corp. (PR REL Vizsla Copper Corp. Dec. 13, 2022).