The Princess Royal and Hazel occurrence is located east of McNab Creek, approximately 900 metres north of the creek mouth on Thornbrough Channel, Howe Sound.

The area is underlain by granodiorite of the Cenozoic-Mesozoic Coast Plutonic Complex, which contains a small pendant of Lower Cretaceous Gambier Group metavolcanic rocks.

Locally, a quartz vein, 15 to 20 centimetres wide, occurs in the granodiorite and is mineralized with sphalerite and pyrite. The vein is intermittently exposed over a length of 15 metres.

In 1979, Tri-Con Mining, on behalf of Silverado Mines, completed a program of silt and soil sampling on the area as the Adriana 1-9 claims.