The Rose (L.124) and Thorn (L.125) magnetite occurrences are located on the north east side of the Gordon River, approximately 8 kilometres from its mouth. The Thorn showings are about 400 metres north of the Rose workings.

The area is underlain by a north west trending limestone roof pendant which intern is underlain by quartz diorite of the Mesozoic and/or Paleozoic Westcoast Complex.

Locally, magnetite occurs at or near the contact of the limestone roof pendant and the encompassing diorite.

There are at least 3 exposures of magnetite on the Thorn claim, the largest having a triangular shape measuring 24 by 18 by 12 metres. The smaller masses are vein-like stringers in limestone.

Work History

Two tunnels and a shaft were excavated on the Rose occurrence by 1902 and consisted of a 91-metre shaft with three crosscut drifts at the 30, 61 and 91 metre levels. The upper drift was 12 metres long, and the two lower drifts were 5.5 metres long. One drift was reported to have cut diagonally through 18 metres of ore mixed with country rock.

In 2003 through 2011, Emerald Fields Resource and Pacific Iron Ore Corporation completed various exploration projects in the area as apart of the Pearson Project. These included prospecting, diamond drilling, ground and airborne geophysical surveys, geological mapping and geochemical sampling. A grab sample, taken in 2004, of massive magnetite from a shaft on the Rose (L.124) occurrence assayed 61.6 per cent iron (Assessment Report 28059).