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File Created: 28-May-2016 by Karl A. Flower (KAF)
Last Edit:  13-May-2020 by Karl A. Flower (KAF)

Summary Help Help

NMI
Name OCTOBER DOME, OD-6 Mining Division Cariboo
BCGS Map 093A062
Status Prospect NTS Map 093A12E
Latitude 052º 39' 09'' UTM 10 (NAD 83)
Longitude 121º 41' 43'' Northing 5834414
Easting 588260
Commodities Gold, Copper Deposit Types L02 : Porphyry-related Au
K04 : Au skarn
Tectonic Belt Intermontane Terrane Quesnel
Capsule Geology

The October Dome (OD-6) occurrence is located near a small pond south of the Quesnel River, approximately 1.7 kilometres southwest of the junction of the Quesnel and Cariboo rivers.

The area is underlain by three main stratigraphic units: siltstone and sandstone, basaltic breccia and polymictic felsic breccia of the Upper Triassic-Lower Jurassic Nicola Group. Thin hornblende monzonite dikes have been recognized as cutting the Upper Triassic strata. An elongate, Early Jurassic, pyritic monzonite intrusion that strikes to the northwest has been emplaced within the lowermost sedimentary strata and basaltic breccia. Weak to moderate propylitic hydrothermal alteration has affected basaltic rocks. The dominant assemblage is epidote-calcite-magnetite-chlorite. Felsic breccia contains potassically altered clasts of syenite or monzonite, some with disseminated pyrite, but this alteration assemblage is thought to have occurred at the source of brecciation and not where these rocks were deposited.

Locally, as defined by drilling, the area is underlain by diorite and monzonite intrusions within hornfelsed sediments and propylitized basalts. Alteration is pervasive, comprising intense propylitic alteration with pyrite, epidote and minor chalcopyrite. Mineralization consists of massive magnetite skarn with semi-massive pyrite layers accompanied by chalcopyrite, epidote and garnet at the sediment/basalt contact over a width of up to 15 metres.

In 2013, diamond drilling yielded: (Assessment Report 34830)

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Hole From To Core length Gold

(m) (m) (m) (g/t)

OD-5 76 80 4 1.1

OD-5 232 250 18 0.5

OD-6 98 100 2 5.2

OD-6 108 110 2 1.1

OD-6 210 219 9 0.7

Incl. 212 215 3 1.3

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In 2005, the area was prospected and soil sampled as the Dome property. During 2009 through 2014, Bearing Resources and Glengarry Developments completed programs of soil and rock sampling, geological mapping, 10 diamond drill holes, totalling 2087.7 metres, and ground induced polarization and magnetometer surveys on the area as the October Dome property.

Bibliography
EMPR ASS RPT 27961, 33119, 33977, *34830
EMPR BULL 97
EMPR OF 1987-9; 1989-14, 20; 1990-31
EMPR P 1990-3
GSC MAP 12-1959; 1424A; 1538G
GSC OF 574; 844
Wetherup , S. (2011-03-14): Independent Technical Report – October Dome Property

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