The Lady Diana occurrence is located on a south facing slope of Porphyry Ridge north of Kliyul Creek, approximately 15 kilometres east of Dortatelle Peak (Assessment Report 21521). The occurrence is approximately 1.5 kilometres southeast of the South Soup skarn occurrence (094D 105).
Regionally, the area lies within the Quesnel Terrane and is underlain by mainly submarine basaltic and andesitic island arc volcanics and sediments of the Upper Triassic Takla Group (Assessment Report 21394). These stratified rocks have undergone regional greenschist metamorphism and are cut by ultramafic to intermediate intrusions of Upper Triassic to Cretaceous age (Assessment Report 21394). The area is bounded to the west by the north trending Dortatelle fault. Smaller, more localized structures trend northwest.
Locally, the occurrence lies within a metamorphic aureole on the northern edge of the Early Cretaceous Kliyul Creek quartz diorite to granodiorite body. This intrusive body is typically light grey and medium-grained with equigranular intergrowths of plagioclase, quartz, potassium feldspar and biotite (Assessment Report 21521). The body exhibits a potassic zonation, which decreases in biotite and grain size and increases in potassium feldspar content from the center to the northern contact (Assessment Report 21521). This contact is sharp and locally offset by small northeast faults. The metamorphosed host rocks are Upper Triassic Takla Group volcanics which, in this area, are predominantly andesitic in composition. The rocks are cut by northwest trending faults.
The Lady Diana occurrence consists of a 200 by 200 metre stockwork zone hosting pyrite and chalcopyrite. The sulphides are found within quartz stringers, as disseminations and fracture fillings. (Assessment Report 21521). The zone parallels the intrusive contact and is bounded to the north by a northwest striking fault informally named the South Bear Creek fault (Assessment Report 21521). The mineralization is spotty and erratic. A grab sample assayed 2.48 grams per tonne gold, 44.8 grams per tonne silver and 2.698 per cent copper (Assessment Report 21521).
There are numerous occurrences of chalcopyrite with associated pyrite, located just to the east, north of the South Bear Creek fault. These occurrences are found in stringers and shears within andesitic volcanics. Sphalerite and galena occur locally with chalcopyrite in the shear zones (Assessment Report 21521).
In 1990, Teck Exploration Limited geologists Lynn Grexton and Paul Roberts, prospector Ted Archibald, and 2 geology students spent 363 man-days on the Porphyry Creek project. Claims included Karen3, Lady Diana 1-4,6, Bear, Kliyul, Emer 1-9 and Lemdi. This claim group contains the following mineral occurrences, 094C): Porphyry Creek (094C 007), Croydon (094C 008), Bloom Cirque (094C 039), Porphyry Creek Molybdenum (094C 065), Croydon North (094C 066), Sarah (094C 075), Bloom Cirque Skarns (094C 084), Raven (094C 127), South Sarah (094C 128), Jump (094C 154), Rave (094C 155), Lonely (094C 156); and 094D: Lady Diana (094D 092), South Soup (094D 105), Davie Creek Moly (094D 113), Aupper (094D 139), Karen Creek (094D 145), DBC (094D 177), UPC (094D 183). Teck staff collected a total of 558 rock, 1372 soil/talus fines, 22 silt, 74 moss matte, 7 pan and 10 water samples. An additional 1005 soil/talus fines samples were collected from the Raven grid. Twenty-two rock specimens were sent for thin section examination. Sixteen whole rock analyses were completed.
In 1992 Noranda carried out 1:5,000 scale geological and alteration mapping and in 1993, they drilled 6 reverse circulation holes on the Kliyul skarn zone (Assessment Report 23033) and followed up with an airborne magnetic, EM, and radiometric survey that extended to the south (Assessment Report 23379). This airborne survey also covered (or nearly covered) 25 MINFILE occurrences including South Soup (094D 105), Lady Diana (094D 092), Karen Creek (094D 145) and DBC (094D 177).
Refer to Croy (094D 015) and Soup (094D 105) for related geological and work history details of the Croy-Bloom property held by NorthWest Copper Corp. (Serengeti) from 2002 to date (2021).
On March 5, 2021, NorthWest Copper Corp. (formerly Serengeti Resources Inc.) and Sun Metals Corp. announced that they had completed their previously announced merger.
