The Flatrock occurrence is exposed in the creek bed of Flatrock Creek at approximately 1440 metres elevation, approximately 1.3 kilometres southwest of the creeks’ junction with the St. Mary River.
Regionally, the area is underlain by sedimentary units belonging to the Mesoproterozoic Purcell Basin (Purcell Supergroup). They include clastic and lesser carbonate rocks with minor mafic sills. The basal unit in the area is the deep water, quartzitic Aldridge Formation, overlain by shallow water clastic rocks of the Creston Formation that in turn are overlain by platformal Kitchener Formation clastic and carbonate rocks. The area is along the west limb of the Purcell anticline, a broad north-plunging fold structure that cores the Purcell Basin. Beds generally strike north-northeast and dip moderately to steeply west. The area is bracketed to the west by the north-northeast–trending Redding Creek fault and to the east by the north-northeast–trending Hall Lake fault. The area has been intruded by numerous Middle to Late Cretaceous granitic bodies that seal the major north-northeast faults.
Locally, the area is primarily underlain by medium-bedded phyllitic siltite and lesser slaty/schistose quartzites of the Mesoproterozoic Creston Formation. Iron carbonate minerals and calcite are locally present to abundant within some of these units as well as disseminated magnetite and ubiquitous sericite±chlorite. To the southwest, a fault slice of the Mesoproterozoic Kitchener Formation is exposed and comprises calcareous siltite and silty quartzite with some stromatolites. Immediately west of these units is a thick sequence of black phyllitic argillite with some interbeds of thick tabular siltite. Foliated, generally magnetic greenstone bodies are abundant on the claim block intruding all the stratigraphic units. They tend to be sill like but also occur as boudinaged strands within bedding-subparallel structural zones. They range in thickness from 30 centimetres to upwards of 10 metres thick. The area has been intruded by unfoliated gabbroic breccia to intermediate feldspar porphyry dikes occurring in close spatial relationship to unfoliated quartz-eye porphyry to aphanitic felsic dikes. Contacts of both dikes are not well exposed; however, they generally trend north-northeast subparallel to bedding.
Mineralization in Flatrock Creek consists of thin discontinuous veinlets/lenses(?) of pyrrhotite and/or sphalerite within a thinly bedded phyllitic argillite as well as a narrow boudinaged or folded zone of semi-massive sphalerite-galena-chalcopyrite. The strike length and overall stratigraphic width containing this style of mineralization is undetermined because it only crops out within the creek bed over an undetermined stratigraphic width. It does not, however, appear to be localized along a particular horizon; rather, it occurs across a broad thickness of stratigraphy. Flatrock Creek also contains numerous float boulders of pyrrhotite±chalcopyrite rich quartz veins up to 30 centimetres wide.
In 2019, three float samples (HSK-22 to -24) from the mineralized zone yielded from 1.86 to 4.06 per cent copper, trace to greater than 1.00 per cent lead, 0.09 to 0.40 per cent zinc, 16.8 to 33.5 grams per tonne silver and 0.05 to 0.11 gram per tonne gold (Assessment Report 39212).
In 2021, three float boulder samples (SK22 to SK24) yielded from 1.86 to 4.06 per cent copper, 16.8 to 206.0 grams per tonne silver and 0.06 to 0.90 gram per tonne gold (Assessment Report 40363).
Work History
In 2019 and 2020, DLC Resources Inc. completed programs of prospecting, geological mapping, geochemical (rock, silt and soil) sampling and 15.4 line-kilometres of ground magnetic and electromagnetic surveys on the area as the Hungry Creek property. In 2021, DLP Resources Inc. completed a 233.7 line-kilometre airborne magnetic and electromagnetic survey and two diamond drill holes, totalling 826.6 metres, on the Hungry Creek property. In 2022, DLP Resources Inc. conducted a further program of prospecting and rock sampling on the property. In 2024 DLP Resources Inc. conducted a regional reconnaissance prospecting program on the property.
