The RH occurrence is located in the southwestern head waters of Colonial Creek, approximately 8 kilometres southwest of the creek mouth.

The area lies within the Insular Belt and is underlain mainly by volcanic and crystalline rocks and minor sediments. Andesitic to rhyodacitic lava, tuff and breccia of the Lower Jurassic Bonanza Group overlie an assemblage of Paleozoic Sicker Group sediments and basalts and Upper Triassic Vancouver Group minor carbonate and clastic sediments. The Bonanza Group volcanics are coeval with, or genetically related to granodiorite stocks of the Jurassic Island Plutonic Suite, which intrude all rocks in the area.

Locally, copper and molybdenum mineralization occur as fracture fillings in Bonanza Group volcanics and in the Hart Lake Stock, an unofficial name for a small granite stock of the Island Plutonic Suite. Some mineralization occurs as replacements in limestone.

Work History

The area was originally staked in the early 1960s by Riocanex Ltd. During 1963 and 1964, Riocanex conducted geochemical sampling, limited geological and self-potenial surveys and drilling exploration. The claims were allowed to lapse and were staked in 1969 by Vanco Explorations Ltd. Vanco conducted geological, geochemical and ground magnetometer surveys over the "Lois" stock and the surrounding area. In addition, about 16 kilometres of induced polarization survey were run over the northern portion of the stock. In the mid-1970s, under a joint venture between Vanco and Esso Minerals, limited mapping and the drilling of a single 214-metre-deep diamond-drill hole were executed. The property was subsequently dropped. In 1984, Brinco Mining Ltd. optioned the property from Jim McDonald as part of a larger property extending north, south and east (see Iron Cap (MINFILE 092L 228) and Fang (MINFILE 092L 265)). The company conducted detailed geological mapping near Hart Lake on the Bozo 4 claim and reconnaissance mapping on the eastern portion of the claim. Gold Leaf Ventures optioned the property from Jim McDonald and during the 1988 and 1990 field season laid out a new grid in the Northwest portion of the Bozo claim, collected 663 soil samples and conducted 20 kilometres of ground magnetometer and VLF-EM surveys. During 2010 through 2012, Compliance Energy completed programs of geological mapping and rock, soil and silt sampling and 470 kilometres of airborne magnetic, electromagnetic and radiometric geophysical surveys on the area as the Nic Property. In 2019, First Geolas Consulting completed a minor program of prospecting and rock sampling on the area as the Nic property.