The Evening property is situated on the south side of Carpenter Creek, near the headwaters of Tributary Creek at 1738 metres elevation above sea level in the Slocan Mining Division. The property includes the Evening and Jennie Crown grants and the Margaret Fractional Crown grant. The underground workings are on the Evening claim and extend south on to the Margaret claim.
In 1902 the Evening claim (Lot 3169) was Crown-granted to D.D. Mann and P. Burns, and the Jennie (Lot 3172) to P. Burns. The Margaret Fr. (Lot 5536) adjoins to the south. The only development work reported was carried out by lessee G.T. Gormley of Sandon during 1913-14. The workings include open cuts and 2 adits, one on each side of the ridge. Some ore was shipped at that time. Cairns (1935) reports production to March 1911.
The property subsequently was combined with the Carnation group, also owned by the Mann interests, who incorporated Carnation Silver Lead Mines, Limited in January 1929. Kelowna Exploration Company, Limited purchased the claims in 1945 as part of the Carnation group. Extensive geological surveys were carried out in subsequent years. In 1949 a crosscut adit was driven southerly through the west end of the Evening claim in search of the downward extension of the Carnation lode (see 082FNW048).
Silmonac Mines Limited was incorporated in 1963 to acquire the property. The company name was changed in 1977 to Silvana Mines Inc. The activity by this company was directed towards the Mascot group adjoining to the east (see 082FNW050).
Regionally, the area lies on the western margin of the Kootenay Arc, in allochthonous rocks of the Quesnel Terrane. In the vicinity of the occurrence, the Quesnel Terrane is dominated by very fine grained clastic sedimentary rocks of the Upper Triassic Slocan Group that include locally weakly metamorphosed argillite, quartzite, limestone and some tuffaceous rocks. These sedimentary rocks are intruded by dikes, sills and stocks of varied composition and origin. Permian and/or Triassic Kaslo Group metamorphosed volcanic rocks occur to the north of the Slocan Group rocks. Middle Jurassic Nelson intrusions are immediately south of the Slocan Group and are inferred to be the source of granitic to pegmatitic sills and dikes found in the area. The Nelson intrusions comprise at least six texturally and compositionally distinct phases ranging from diorite to lamprophyre. The most dominant phase is a medium to coarse grained potassium feldspar porphyritic granite (Paper 1989-5).
The occurrence is hosted by predominantly interbedded black argillite and medium to dark grey quartzite and argillaceous quartzite of the Slocan Group. Argillaceous limestone, limestone and slate are also found in varying proportions in the sequence. The sedimentary rocks have been folded, fractured, faulted and regionally metamorphosed to greenschist facies. The regional northwest trending asymmetric Slocan syncline is thought to be Middle Jurassic and is the first recognizable deformation in the sequence. Several fault structures are evident and host vein mineralization. Later stage normal and thrust faults and shearing have chopped, deformed and remobilized the veins and mineralization. Horizontal displacement can be several metres to over 90 metres. Drag features are also present.
The occurrence consists of a fissure vein that strikes 065 degrees and dips 45 degrees southeast. The vein is 20 to 30 centimetres wide and has been mined for about 100 metres along strike. The fissure is mostly filled with crushed wallrock. Bands of galena and sphalerite 2 to 5 centimetres wide occur in a gangue of quartz, calcite and oxidized sulphide material (probably pyrite).
Production from the occurrence before 1911 to 1914 yielded 253,961 grams of silver and 11,092 kilograms of lead from 57 tonnes mined.