The Lorax is a volcanogenic massive sulphide occurrence that is found within a block or pendant of metasedimentary and metavolcanic rocks engulfed in intrusive rock of the Cretaceous Coast Plutonic Complex. The complex consists of diorites and granodiorites. The pendant forms a northwest trending belt of metamorphic rocks comprised of Upper Triassic Karmutsen Group and Lower Cretaceous Gambier Group.

Prospecting in 1998 by Arnd Burgert while working on a Prospectors Assistance Program grant from the Ministry of Energy and Mines resulted in the discovery of a 0.2 metre thick sulphide lens, traceable over 8 metres. Burgert received a another grant in 1999 and his follow-up work led to the discovery of a series of en-echelon massive sulphide lenses about 175 metres to the south of (and down section from) the first discovery. The longest lens is 10 metres long and up to 1 metre thick. A 2001 prospecting grant to Burgert has allowed him to further define this mineral deposit.

The sulphides are fine to coarse grained, bedded, and weathered black, orange or red. The 1998 showing is hosted by impure quartzite. The 1999 showing occurs at the contact between a 200 metre thick section of mafic flows (footwall) and a unit dominated by mafic tuff and clastic sediments (hangingwall). A coarse grained marble lens occurring among the sulphide lenses is thought to be consistent with a carbonate exhalite. The 1999 showing is capped by a 0.2 metre thick felsic baritic tuff which in turn is overlain by mafic tuffs, felsic tuff and a 20 metre thick section of black, sulphidic, carbonaceous mudstone. The 1999 sulphide lens is zoned and contains pyrite and sphalerite with lesser chalcopyrite and galena, while the 1998 lens is devoid of galena, and exhibits no zoning.

The following analyses were reported in 1999 Assessment Report 26072 and in a forthcoming 2001 Assessment Report by Burgert. At the 1999 showing, peak values from among outcrop chip samples of at least 0.3 metres in length include 2.59 grams per tonne gold, 12.2 per cent zinc, 211 grams per tonne silver, 1.0 per cent (9950 ppm) copper, and 1.90 per cent lead. A weighted average of 11 chip samples aggregating 3.6 metres gave the following values: 3.1 per cent zinc; 17.8 grams per tonne silver; 0.3 per cent copper; 0.3 per cent lead. Chip samples aggregating 2.9 metres yielded a weighted average analysis of 0.67 gram per tonne gold.

Material in many chip samples is strongly weathered rock that has been leached in situ and the metals grades in the underlying fresh sulphides may be higher. Geochemical soil anomalies have been defined on a soil grid established around the showings.