The Goldrop occurrence is 500 metres north of the confluence of Fourteen Mile and Whipsaw creeks, 16 kilometres southwest of Princeton.

The area is underlain by mafic to felsic volcanics and minor argillite of the Upper Triassic Nicola Group. These rocks are overlain by intermediate hornblende porphyritic flows of the Eocene Princeton Group at higher elevations on either side of Whipsaw Creek.

This occurrence is hosted in feldspar porphyritic andesite with minor volcanic breccia of the Nicola Group. The andesite occasionally contains zones of intense calcite veining, up to several metres wide. Individual zones are comprised of numerous narrow calcite veins (up to 0.5 metre), accompanied by minor silicification and chloritization. Mariposite is also present.

The zones of calcite veining are mineralized with massive pyrite and sphalerite, and minor chalcopyrite. This mineralization strikes west and dips steeply south. Diamond drilling has encountered such mineralization over widths of 0.5 to 2 metres. Drill core from one hole averaged 0.145 gram per tonne gold, 0.77 per cent copper and 8.85 per cent zinc over 1.83 metres (Assessment Report 20313, page 1, hole 89-1). A second hole analysed 5.59 grams per tonne gold, 0.40 per cent copper and 7.63 per cent zinc over 0.50 metres (Assessment Report 17619, page 5, hole 88-2).

A total of 345 tonnes grading 12.9 grams per tonne gold, 130.0 grams per tonne silver, 0.003 per cent copper, 0.27 per cent lead and 0.10 per cent zinc was mined in 1973 and 1974. M. Shewchuk drilled four holes totalling 581 metres between 1988 and 1990.