The MELON occurrence is located southeast of Long Lake, approximately 7 kilometres east of the community of Horsefly and 33 kilometres southeast of Likely.

Copper mineralization is associated with the Triassic-Jurassic monzonitic to dioritic Lemon Lake stock, which occurs within volcanic rocks of the Nicola Group in the central Quesnel belt. The stock has intruded Upper Triassic basalt and overlying Lower Jurassic breccias containing felsic volcanic and plutonic clasts. These latter breccias are partly coeval with, and form an apron about, the felsic stock. Both the volcanic and the intrusive rocks have alkalic to sub-alkalic compositions with shoshonitic affinities.

The volcanic rocks adjacent to the stock and parts of the stock itself have undergone propylitic alteration, characterized by the development of calcite, chlorite and epidote. Zeolite alteration in places may also be of hydrothermal origin. Biotite alteration and secondary potassium feldspar is commonly associated with copper mineralization in syenodiorite and monzonite. Copper mineralization also occurs sparsely in the surrounding volcanics. Weakly anomalous gold values have been determined in propylitized volcanic rocks surrounding the stock. Mineralization consists of chalcopyrite, bornite, malachite, pyrrhotite, magnetite, pyrite and molybdenite.

Mapping on the Lemon Lake property in 2007 and 2010 determined that copper and gold mineralization occurs exclusively in the Mesozoic Lemon Lake stock in the western half of the property and is associated with moderate to strong potassic alteration. Outcrops of volcanic rocks are limited to the east side of the property, and include both flow and pyroclastic rocks. Flow rocks consist of pyroxene- and olivine-phyric basalt and plagioclase-phyric andesite. Pyroclastic rocks are predominantly polymictic lapilli tuff, with a pyroxene-phyric, andesitic groundmass. Volcanic breccia, pillow basalts and mafic tuff are common, as are felsic tuffaceous breccias, lithic tuffs, tuffaceous sandstone and siltstone (Assessment Report 31864).

In 1969, percussion drilling yielded up to 0.09 per cent copper over 7.5 metres (Property File - Mt. Calvery Resources Ltd. [1981-01-01]: Data Compilation - Lemon Lake Cu/Au Prospect).

In 1992, a reverse circulation drill hole (LRC92-3) intercepted 3.03 metres yielding 0.41 per cent copper with 0.96 gram per tonne gold and 15 metres yielding 0.13 per cent copper with 0.37 gram per tonne gold (Assessment Report 22850). The drill hole also returned 0.26 per cent copper and 0.78 gram per tonne gold over 6.1m starting from 36.6 m depth, near the bottom of the hole.

In 2022, HQ diamond drill hole LL-22-02 tested the potential vertical extension of the mineralization reported in reverse circulation hole LRC92-3 in a potassium feldspar altered monzonite. The hole intersected largely unaltered gabbro for most of its length with minor pyrite chalcopyrite mineralization associated with chlorite-calcite altered and brecciated faults near surface at 27-33 metres downhole and another from 124-140.80 metres downhole. The best intercept from 129.8 to 131.82 metres downhole graded 0.343 per cent copper 1.162 grams per tonne gold (Assessment Report 41445).

WORK HISTORY

Since the 1960s, the Lemon Lake area has been explored for gold and silver potential. Historical work includes geophysical surveys, soil and rock sampling, prospecting, geological mapping, trenching and reverse circulation, percussion and diamond drilling.

In 1992, J.R. Kerr completed an exploration program of geochemical soil sampling, geophysical EM surveys and diamond drilling on the Melon claims. In 1994, Canim Lake Gold Corp. completed geophysical surveys over the area.

In 2008, Cedar Mountain Exploration Inc. ran programs of rock, till and stream sampling and the interpretation of 2003 airborne radiometric and magnetic surveys resulting in nine targets for follow-up investigations. A geological mapping program was carried out over the Lemon Lake property in 2010. In 2011, Metalogic Exploration Inc. undertook a ground IP (induced polarization) and magnetic survey over the western part of the Lemon Lake pluton, west of the Pine prospect.

In 2018, Evrim Exploration Canada Corp. conducted a program of prospecting, soil and rock sampling, mapping and IP modelling over the Lemon Lake property. In 2021, Orogen Royalties Inc. (formerly Evrim Exploration) and property option holders conducted a program of geological mapping, rock sampling/hand trenching, airborne magnetic/VLF survey, petrology and evaluation of historical drill results and geochemical and geophysical data compiled from previous programs. This data was applied to define drill targets A (CZ prospect area), B (southwest of CZ prospect) and C (Melon-Pine area) on the Lemon Lake property.

In 2022 and 2023, two HQ diamond drill holes were completed by Orogen Royalties, one in the CZ prospect area (Target A), 1.5 kilometres north-northwest of the Melon occurrence and one in the Melon prospect area (Target C) (Assessment Report 41445).

In September 2025, Prospect Ridge Resources Corp. acquired, from Orogen Royalties Inc., a 100 per cent interest in the 26.46 kilometre² Camelot Project (formerly Lemon Lake property) and commenced a diamond drill program on targets A and B, extending from the southern tip of Lemon Lake northeastward to the CZ prospect area (PR REL Prospect Ridge Resources Dec. 22, 2025).

Refer to PINE prospect (Minfile 093A 002) for a more complete history of exploration on the Lemon Lake property.