The Lasca 2 showing is located near the headwaters of Lasca Creek, 15 kilometres east of Nelson.

The area is underlain by porphyritic hornblende granodiorite of the Nelson batholith of the Late to Middle Jurassic Nelson Intrusions. Small rafts and roof pendants consisting of Lower Jurassic Ymir Group and Lower Cambrian metamorphosed sediments occur in the batholith.

The Lasca number 2 vein is a 0.6 to 1.5-metre wide quartz vein exposed for 402 metres along strike within Ymir Group metasediments. The vein at surface is, locally, only 1.4 metres from the contact with the granodiorite. The vein strikes from 160 to 175 degrees with a westerly dip of 35 to 67 degrees. A shear zone occurs up to 0.40 metre in width on each side of the vein. The vein contains less than 5 per cent pyrite, pyrrhotite, and rare sphalerite with possibly some tetrahedrite. The sulphides are distributed erratically within the shear and quartz gangue. A sample from the vein at an adit assayed 2.9 per cent lead and 0.07 per cent zinc, 0.135 gram per tonne gold and 95.4 grams per tonne silver (Assessment Report 12940).

Nearby are a couple of associated and parallel veins from which 1983 samples assayed up to 21.7 grams per tonne gold and 364.74 grams per tonne silver, but these assays were not confirmed by 1984 sampling (Assessment Report 12940).