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File Created: 18-Jul-2020 by Karl A. Flower (KAF)
Last Edit:  18-Jul-2020 by Karl A. Flower (KAF)

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NMI
Name INDATA SOUTH, SOUTHERN COPPER Mining Division Omineca
BCGS Map 093N034
Status Showing NTS Map 093N06W
Latitude 055º 22' 55'' UTM 10 (NAD 83)
Longitude 125º 20' 31'' Northing 6139791
Easting 351630
Commodities Copper, Gold Deposit Types
Tectonic Belt Intermontane Terrane Cache Creek, Quesnel
Capsule Geology

The Indata South occurrence is located on a gentle west facing slope, east of Albert Lake and approximately 3 kilometres west of the north west end of Indata Lake.

The area is underlain by sediments assigned to the Carbonaceous to Jurassic Cache Creek Complex and volcanic rocks similar to those of the Middle Triassic to Lower Jurassic Takla Group to the east. These groups of rocks are separated by the Pinchi fault zone, which traverses the area in a north-northwesterly direction and have been intruded by intermediate to felsic plutons and by ultramafic bodies. The oldest rock in the area is massive to well bedded, light to blue-grey Cache Creek limestone outcropping as prominent hills and bluffs. Much of the area between Albert and Indata lakes, however, is underlain by hornblende andesite flows and pyroclastics, including pillow breccia, tuff, tuff breccia and crystal lithic tuff. Small areas of dark amygdaloidal basalt flows have also been observed. Three intrusive suites have been mapped in the area. Hornblende diorite, the oldest intrusive unit, forms a pluton east of the occurrence and occurs as dikes. It is thought that this unit may be comagmatic with the volcanic rocks, as it does not intrude other rock types. Intruding both volcanic rocks and the diorite are dark green to black coloured, locally altered serpentinite (metaperidotite) and gabbroic bodies formerly assigned to the Middle Permian to Late Triassic Trembleur intrusions and now termed Mississippian to Triassic Oceanic Ultramafites. The youngest intrusive rocks in the area consist of coarse grained, light to reddish grey biotite quartz monzonite to granite.

Locally, road construction exposed a zone of silicified volcanic rocks hosting copper sulphides.

In 1998, samples are reported to have yielded from 0.39 per cent copper and 0.18 gram per tonne gold to 6.7 grams per tonne copper and 1.7 grams per tonne gold (Laird, B. L. (2018-08-06): NI 43-101 Technical Report on the Indata Project).

The area has been explored in conjunction with the nearby Indata (MINFILE 093N 192) occurrence and a completed property exploration history can be found there.

Bibliography
EMPR BULL 70
EMPR EXPL 1984-336,337; 1985-C330; 1987-C314; 1988-B137,B138,C178; 1996-C12; 1998-33-45; 2003-23
EMPR INF CIRC 2014-1, p. 5
EMPR OF 2000-19
GSC MAP 844A; 907A; 971A; 1424A
GSC MEM 252
GSC OF 3071
GSC P 42-7; 42-11; 44-5; 45-6
Morton, J.W. (2013): Summary Report 2013 on the Indata Property, for Eastfield Resource Ltd, October 21, 2013.
Johnston, R.J. (2015-05-19): NI 43-101 Technical Report on the Indata Property
*Laird, B. L. (2018-08-06): NI 43-101 Technical Report on the Indata Project

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