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File Created: 24-Jul-85 by BC Geological Survey (BCGS)
Last Edit:  30-Nov-96 by Keith J. Mountjoy(KJM)

Summary Help Help

NMI
Name HOMESTEAD (M47), WARRIOR FR. (L.2749), REAR GUARD FR. (L.2750), HOMESTEAD FR. (L.2061), ELKHORN Mining Division Osoyoos
BCGS Map 082E021
Status Showing NTS Map 082E05W
Latitude 49º 16' 06" N UTM 11 (NAD 83)
Longitude 119º 49' 58" W Northing 5461148
Easting 293931
Commodities Nickel, Copper Deposit Types I06 : Cu+/-Ag quartz veins
L01 : Subvolcanic Cu-Ag-Au (As-Sb)
M02 : Tholeiitic intrusion-hosted Ni-Cu
Tectonic Belt Intermontane Terrane Plutonic Rocks, Okanagan
Capsule Geology

The Homestead showing is located at 1000 metres elevation on a western tributary of Olalla Creek, 3 kilometres northwest of Olalla, British Columbia. Little information could be found about this occurrence, therefore its location is approximated.

The Homestead Fraction (Lot 2059) claim was first reported Crown granted in 1903 to Jas.M. Sharp and W.J. Brewer. The Warrior (Lot 2749) and Rear Guard (Lot 2750) Fraction claims were Crown granted to W.J. Brewer. In 1928, W.C. McDougall and associates owned the Homestead and Elkhorn claims. A short 7.6-metre tunnel was driven. G.M. Explorations Ltd. conducted geochemical soil sampling and 51.8 metres of diamond drilling on the property in 1967.

The Homestead occurrence is underlain by pyroxenite of the ultramafic to alkaline Middle Jurassic Olalla intrusion. This intrusion has intruded a sequence of oceanic sediments and volcanics of the Carboniferous to Triassic Shoemaker and Old Tom formations. Black to green chert, light grey quartzite and minor limestone lenses comprise the dominant lithologies. The Shoemaker and Old Tom formations form a broadly folded, east-dipping sequence in the area. The Olalla intrusion consists of a magnetite-bearing pyroxenite peripheral zone to a diorite (or gabbro) and syenite core. The pyroxenite is composed primarily of augite with lesser magnetite. Coarse-grained syenite dikes occur at the contact with the peripheral pyroxenite zone.

The short tunnel driven in 1928 intersected segregations and stringers of pentlandite associated with pyrite and pyrrhotite hosted in pyroxenite of the Olalla stock. The pyroxenite is extremely fractures and faulted. The neighbouring Elkhorn claim is mainly underlain by quartzite of the Shoemaker Formation, which has been intruded by pyroxenite, gabbro and augite porphyry of the Olalla stock. Mineralization consists of lenticular segregations of pyrite, pyrrhotite, magnetite and sparse chalcopyrite in 60 to 120 centimetre wide fracture zones in quartzite and shear-hosted quartz veins. The host quartzite is heavily copper carbonate stained over 5 to 46 centimetre widths. The strike of the quartz veins is nearly perpendicular to quartzite beds near the pyroxenite contact.

Bibliography
EMPR AR 1903-247,249; 1904-226; 1907-220; *1928-261; *1967-219
EMPR ASS RPT 406, 14455, 17648, 19611
GSC MAP 341A; 538A; 539A; 541A; 628A; 15-1961; 1736A; 2389
GSC MEM 38; 179
GSC OF 481; 637; 1505A; 1565; 1969
GSC P 72-53

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