Dividend-Lakeview Mine, Osoyoos, Osoyoos Mining Division, British Columbia, Canadai

Regional Level Types
Dividend-Lakeview Mine	Mine (Inactive)
Osoyoos	Town
Osoyoos Mining Division	Division
British Columbia	Province
Canada	Country

The past producing Dividend-Lakeview mine is located on the eastern slopes of Mount Kruger, 3.75 kilometres south-west of Osoyoos, British Columbia. The property described herein extends southward to the USA border. This posting refers to the original Dividend-Lakeview deposit sensu stricto of Cockfield (1935) and several adjacent claims of later date.
There is a description of the area on the British Columbia “Minfile” site, current to 2008, to which interested readers are referred; selected excerpts are quoted below:
“The regional geology of the Dividend-Lakeview area consists of medium to coarse-grained granodiorite of the composite Middle Jurassic Similkameen batholith. To the west this includes alkali syenite and nepheline syenite of the Kruger intrusion. The Fairview intrusion outcrops to the north. The Similkameen intrusion extends from 10 kilometres north of the Canada-United States border, south into Washington state. The granodiorite is grey-green, medium to coarse grained and dominantly composed of quartz, plagioclase and hornblende. The Similkameen batholith has intruded metasediments and metavolcanics of the Carboniferous to Permian Kobau Group. Intensely folded and metamorphosed micaceous quartzite, greenstone, phyllite, chlorite or mica schist with intercalations of dioritic rocks and sparse limestone lenses comprise lithologies. To the west lie a series of highly sheared schists, greenstones and quartzites known informally as the Kruger Schists. The greenstone has been highly sheared in many areas associated with emplacement of the Similkameen intrusion and other intrusions. Shear zones strike southeast and dip moderately to steeply northeast and southwest. Local variations occur however. Limestone form discontinuous lenses which have been totally recrystallized near ore-bearing horizons.
Silicification composed of quartz pods, stringers and veins is common throughout the greenstone and in quartzite near the southwest corner of the Gold Hill claim. Minor carbonate is also present.
The Dividend-Lakeview deposit is considered a high temperature replacement deposit in limestone of the Kobau Group. The Lakeview ore shoot is described as being hosted in a quartz vein structure in a sericitized and chloritized contact phase of metavolcanics and quartz diorite and diorite intrusion (Assessment Report 9180). Within the property, there are also andesitic to basaltic flows, which are propylitically altered to epidote, calcite, chlorite and pyrite. At the main Dividend-Lakeview workings, greenstone contains a 1 to 3 metre thick marble lens. The greenstone has a weak to moderate developed schistosity, which is overprinted by epidote stockwork and intense chlorite-carbonate alteration. Quartz-calcite veins with pyrite, chalcopyrite with minor malachite and azurite cut sheared volcanics and extend well beyond the limits of skarn overprinting. The trend of the ore structure is southeast and dips southwest. The ore shoots rake to the southwest along dragfold structures. Ore shoots were up to 15 metres long and 2 metres width.
Skarn mineralization at the Dividend-Lakeview occurrence consists of massive pyrrhotite, pyrite, chalcopyrite and arsenopyrite which preferentially replaces marble. Skarn in the surrounding greenstone contains garnet, epidote, chlorite, ferro-hastingsite, actinolite, quartz, calcite, magnetite and wollastonite. Massive magnetite with minor chalcopyrite associated with dark brown garnet occurs in a mine pillar at the limestone-volcanic contact. Elsewhere the garnet is pale amber, euhedral, anisotropic, fine to medium grained and contains concentric growth rings. Electron microprobe analysis of garnets identify them as grandites. Other minerals present in variable amounts include sericite, sphene and clay. Opaque minerals identified include magnetite, ilmenite, pyrrhotite, pyrite, marcasite, hedleyite, native gold and bismuth. Skarn mineralization has been traced over a considerable distance along a westerly strike from the Dividend-Lakeview pit. The linear trend of mineralization and association with intense shearing indicates a structural control.”
Comments by Giles Peatfield on some of the minerals reported from the locality:
Actinolite: Reported by Di Spirito, et al. (1986), in thin section.
Amphibole group: Ettlinger and Ray (1989) reported that in material studied by them “A deep green pleochroic amphibole is the most abundant [amphibole]; preliminary analyses indicate it to be a chlorine-rich ferrohastingsite which is also observed at other gold-enriched skarns in British Columbia . . . .” My colleague Dr. J. Douglas Scott has pointed out that “ferrohastingsite” is not a valid species – perhaps the mineral in question is potassic-chloro-hastingsite?
Augite: Reported by Di Spirito, et al. (1986), in thin section.
Bismuth?: Reported by Ettlinger and Ray (1989), but see following note.
Bismuthinite: Reported by Menzies (1949) who noted that it was X-ray confirmed by Dr. R. M. Thompson. Is this what Ettlinger and Ray called bismuth?
Chlorite group: Numerous workers have referred to this material as “chlorite”, but there is no more specific data available for the locality.
Chloritoid?: Di Spirito, et al. (1986) reported this, but gave no details. I regard it as tentative.
Diopside: This was reported in thin section by Cockfield (1935).
Garnet group: Most workers here report “garnet”. Ettlinger and Ray (1989) reported that “Electron microprobe analyses of garnets from the mine area identify them as grandites, ranging from Ad 32 to Ad 93 mole percent . . . .”
Gold: Menzies (1949) found very small grains of gold in pyrite, reporting that “The largest particle of gold found measured 58 microns by 29 microns.”
Hedleyite: Ettlinger and Ray (1989) reported this Bi telluride in skarn.
Jarosite?: Di Spirito, et al. (1986) reported jarosite as a yellow alteration product, but gave no supporting data. I would regard it as possible for the locality, but more work would be necessary to assign a precise mineral name.
Plagioclase: Cockfield (1935) reported that the plagioclase he studied was “. . . highly altered to sericite, but of about the composition of andesine.” Other workers simply described altered plagioclase.
Powellite: Stevenson (1943) reported powellite as an alteration product of molybdenite.
Pyroxene group: Di Spirito, et al. (1986) reported “augite” in thin sections.
Sillimanite: Di Spirito, et al. (1986) reported sillimanite in thin sections.
Tetrahedrite group: Menzies (1949) reported that “Tetrahedrite is a common mineral found in association with magnetite.” No other workers identified tetrahedrite from the property.
Wollastonite: Reported by Cockfield (1935) in thin section.
Zoisite: McKechnie (1964), in describing thin section examination, mentioned that “Epidote and zoisite are present to prominent.”

Comments by Giles Peatfield on rock types reported from the locality:
Granite: Stevenson (1943) described a pink intrusive rock as “alaskite”.
Quartzite : This rock type was reported by most workers, but Carpenter and Crowe (1987) commented that “The presence of phyllitic units and micaceous bands within the “quartzite” lend a bedded or banded appearance to the exposures. Despite this appearance however, it is most probable that all of the “quartzites” are a result of varying degrees of silicification.”
Serpentinite: Di Spirito, et al. (1986) described a highly altered rock as “serpentine”.
Most of the rock type designations are field names.

Other Databases

Link to British Columbia Minfile:	082ESW001

References