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File Created: 07-Feb-2020 by Karl A. Flower (KAF)
Last Edit:  15-Feb-2020 by Karl A. Flower (KAF)

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NMI
Name TIP TOP (L.798), NORTH STAR (L.797) Mining Division Nelson, Trail Creek
BCGS Map 082F002
Status Showing NTS Map 082F04W
Latitude 049º 05' 26'' UTM 11 (NAD 83)
Longitude 117º 47' 05'' Northing 5437819
Easting 442708
Commodities Gold Deposit Types
Tectonic Belt Omineca Terrane Quesnel, Kootenay, Plutonic Rocks
Capsule Geology

The Tip Top (L.798) occurrence is located at an elevation of approximately 1120 metres on the north side of Columbia Kootenay Mountain and northeast of the community of Rossland.

Regionally, the area is underlain by the Lower Jurassic Elise Formation (Rossland Group) volcanic breccia, conglomerate and sandstone sequence, which dips uniformly at moderate angles to the west. Primary sedimentary structures indicate the beds face west and only small north-trending faults cause minor offsets. The Rossland sill of the Elise Formation forms an irregular mass of augite porphyry in the thin-bedded sedimentary and massive volcanic breccias and conglomerates. The sill is difficult to distinguish from the thermally metamorphosed Rossland Group rocks.

The Rossland Group rocks are intruded to the north by granodiorite of the Middle Jurassic Trail Pluton and to the south by quartz monzonite of the Early Jurassic Rossland Plutonic Suite, which is composed of a biotite-hornblende-augite monzonite stock. The contact with the monzonite is gradational and grades northwards into the volcanic conglomerate over 300 metres. A zone of thermal metamorphism has bleached the well-indurated hornfels of the Rossland Group, which contains pyroxene and garnet. A swarm of diorite dikes crosscut both the monzonite and Rossland Group rocks. Also, the Middle Eocene Coryell syenite intrudes the Rossland Group rocks to the south.

Locally, on the Tip-Top (L.798) Crown grant, quartz veins host massive pyrrhotite mineralization. See the Columbia-Kootenay (MINFILE 082FSW151) occurrence for more information on regional and local mineralization.

In 1986, a chip sample (83150C) of massive pyrrhotite and quartz vein material assayed 2.5 grams per tonne gold over 0.15 metre (Assessment Report 15432).

The area has been explored in conjunction with the nearby Columbia-Kootenay (MINFILE 082FSW151) past-producing mine since the late 1800s, with the Crown-granted mineral claims being staked in 1890.

During 1982 through 1986, Gallant Gold Mines Ltd. completed programs of rock and silt sampling, geological mapping, ground geophysical surveys and seven diamond drill holes, totalling 694.0 metres, on the area as the Georgia property.

In 2018, Currie Rose Resources Inc. completed a 164.8 line-kilometre airborne magnetic survey on the area.

Bibliography
EMPR ASS RPT 14236, *15432, 15743, 15865, 37909
EMPR BULL 74; 109
EMPR FIELDWORK 1987, pp. 19-30; 1988, pp. 33-43; 1989, pp. 11-27; 1990, pp. 9-31
EMPR OF 1988-1; 1989-11; 1990-8; 1990-9; 1991-2; 1991-16
GSC MAP 1518; 1504A
GSC MEM 77, pp. 54,130
GSC P 79-26
ECON GEOL Vol. 68, 1973, pp. 1337-1346

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