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File Created: 13-Mar-1986 by Allan Wilcox (AFW)
Last Edit:  21-Apr-2021 by Nicole Barlow (NB)

Summary Help Help

BCGS Map 093N034
Status Developed Prospect NTS Map 093N06W
Latitude 055º 23' 39'' UTM 10 (NAD 83)
Longitude 125º 20' 14'' Northing 6141141
Easting 351975
Commodities Copper, Gold, Silver, Antimony, Lead, Bismuth, Tungsten, Zinc, Nickel Deposit Types I05 : Polymetallic veins Ag-Pb-Zn+/-Au
L04 : Porphyry Cu +/- Mo +/- Au
Tectonic Belt Intermontane Terrane Cache Creek, Quesnel, Plutonic Rocks
Capsule Geology

The Indata occurrence is located between Albert and Indata lakes, 4 kilometres south of the outlet of Tsayta Lake and approximately 40 kilometres east-southeast of Takla Landing. Interest in the area began in 1983, when a regional exploration program was conducted by Imperial Metals Corporation along the Pinchi fault zone. Results of the 1984 regional geochemical release served to focus this interest in the area of Radio Lake and eventually led to the discovery of in-situ mineralization.

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-northwest 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 because it does not intrude other rock types. Intruding both the volcanic rocks and the diorite are dark-green to black, 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.

Regionally, similar granites have been described as belonging to the Late Triassic to Early Jurassic Topley intrusions. At least two periods of faulting have affected volcanic rocks in the area. An early set of north-striking, east-dipping faults has been cut by predominantly east-striking, steeply dipping normal faults. The latter faults are thought to be post-mineralization because they tend to displace veins hosted by the north-striking faults. Copper mineralization is also hosted by fracture systems in the volcanic rocks thought to be set up by the emplacement of the diorite pluton.

Mineralization found to date is of two types: 1) polymetallic vein mineralization occurring within shallowly dipping, north-striking shear zones and 2) disseminated and fracture-controlled chalcopyrite-pyrite-pyrrhotite mineralization of porphyry-type within a granodiorite stock and enclosing volcanic rocks.

The polymetallic mineralization is characterized by up to 7.6-metre wide veins hosting zonally distributed, massive arsenopyrite with associated pyrrhotite, chalcopyrite, pyrite and local stibnite and galena in a quartz-carbonate gangue. Gold and silver associated with the sulphide mineralization occur in variable amounts, with gold to silver ratios increasing from south to north. Minor tetrahedrite, sphalerite, pentlandite, scheelite, bismuthinite and bismuth-telluride mineralization has also been noted locally. Wallrock alteration depends on rock type, with silicification prominent in volcanic rocks and talc alteration more prevalent in ultramafic wallrocks. The second type of mineralization is characterized by chalcopyrite (with or without pyrite) with attendant malachite and azurite as fracture coatings and as disseminations within propylitic altered (and locally silicified) wallrock.

Diamond drill hole 88-I-11, collared to test part of an 800-metre long geophysical/geochemical anomaly known as the Main zone, intersected a 1.2-metre wide quartz-sulphide vein grading 6.1 grams per tonne gold. The same drillhole also intersected disseminated sulphide mineralization within talc-carbonate–altered serpentinite 7 metres further down hole. A 6-metre wide sample across this mineralization graded 31.57 grams per tonne gold (George Cross Newsletter No. 172, 1988; Property File - Eastfield Resources Ltd. Newsletter).

At the north end of Albert Lake (the Lake zone), disseminated and stringer pyrite-chalcopyrite mineralization occurs in a shear zone in chlorite-epidote–altered basalt. A diamond drill hole intersection across 0.3 metre graded 1.95 per cent copper (Assessment Report 14074, Appendix III).

In 1996, Clear Creek Resources Ltd. drilled and intersected 96.5 metres of 0.12 per cent copper (George Cross Newsletter No. 72, 1998).

Wildrose Resources Ltd. and Clear Creek Resources Ltd. completed a 10-hole, 955-metre drill program in 1998. One hole intersected 0.20 per cent copper over 145.2 metres (George Cross Newsletter No. 72, 1998).

Helicopter-supported drill programs were completed on the Indata property in 1985, 1987, 1988 and 1989, and bulldozer-supported programs in 1996, 1998 and 2005. A total of 70 drillholes, totalling 6582 metres, had been completed on the Indata property to 2005. Of these, at least 42 targeted lode gold or copper-gold mineralization, with the vast majority of the holes being collared in the central portion of the property east of the main copper-in-soil anomaly at Albert Lake. The historical results include a high of 47.26 grams per tonne gold over 4 metres in hole 88-I-11. Of the 28 holes that tested porphyry-style mineralization to the east and north of Albert Lake, the best intersection was hole 1998-4, which intersected 148.2 metres of 0.20 per cent copper; the bottom 24.1 metres of this hole graded 0.37 per cent copper (Assessment Report 25508).

The following history with accompanying reported assays is taken from Assessment Report 27309. Exploration of the property began in 1984, with Imperial Metals Corporation staking the property. Following initial soil sampling and the staking of additional claims, a four-hole diamond drilling program was completed by Imperial to explore at depth copper mineralization seen in outcrop near the northeast side of Albert Lake. This program resulted in the discovery of low-grade chalcopyrite-pyrite mineralization (0.1 to 0.2 per cent copper) to depths of less than 100 metres from the surface. In 1986, Eastfield Resources Ltd. entered into a joint venture with Imperial and undertook a program of grid establishment, soil sampling and hand trenching and geophysical surveying, followed by diamond drilling in 1987, 1988 and 1989 and trenching with a bulldozer-mounted backhoe in 1989. The drilling programs resulted in the discovery of polymetallic quartz and quartz carbonate veins with elevated precious metal values (commonly in the range of several hundred parts per billion gold to 6 grams per tonne with the most significant intercept being 47 grams per tonne gold over 4 metres). These polymetallic veins, which generally strike north and dip to the east, are commonly enveloped by a zone of silicification. In 1995, after construction of a road through the southern part of the Indata property, a trenching program was completed adjacent to the northeastern part of Albert Lake, over the copper zone previously defined by soil sampling. One of these trenches (Trench 7) yielded an average of 0.36 per cent copper over a length of 75 metres. In 1996, Clear Creek Resources Limited carried out a small diamond drilling program in the area of anomalous copper in soils adjacent to the northeastern part of Albert Lake. Results of this program confirmed the existence of subsurface copper mineralization indicated by the results of Imperial Metals Corporation’s 1985 drilling but, in this area, it is of low-grade (0.1 to 0.2 per cent) over downhole lengths of up to 100 metres. A 1998 drilling program by Clear Creek confirmed and exceeded the 1996 drilling results and also established the presence of an unexposed altered granodiorite stock with copper mineralization adjacent to the eastern edge of Albert Lake. During road construction at that time, silicified volcanic rocks were exposed in a roadcut in the southern part of the existing grid. Grab samples showed the presence of copper sulphides along with enriched gold. Ten grab samples yielded an average value of 1.04 per cent copper and 0.39 gram per tonne gold.

In 2003, Eastfield Resources vended its Indata (MINFILE 093N 092) property, located 40 kilometres southeast of Takla Landing, to Castillian Resources Inc. and 16 kilometres of grid were established and cut, from which an 11.2-kilometre induced polarization survey was run. Soil sampling was completed on the 16-kilometre grid at 50-metre sample spacings. In all, 304 soil samples were collected. Results of the 2003 work have also outlined several new precious metal targets correlated with anomalous concentrations of arsenic and antimony and elevated chargeability responses.

In 2005, Eastfield Resources Ltd. and Castillian Resources Corp. amended the agreement to allow Aberdeen International Inc. the right to earn one-half of the interest being earned by Castillian Resources Corp. Two holes totalling 253.6 metres were completed. The best result obtained was a 12.4-metre interval starting at 18.4 metres that graded 0.12 per cent copper (Press Release, Eastfield Resources Ltd., August 23, 2005).

In 2006, Redzone Resources Ltd. optioned the Indata property. In 2007, a program of line cutting, soil sampling and mechanical trenching was completed by Redzone Resources Ltd. and Eastfield Resources Ltd. Testing of a 2003 induced polarization anomaly identified a new, 10-centimetre wide, polymetallic vein west of the previously known veins. Samples from the vein yielded values of up to 17.16 grams per tonne gold (Johnston, R.J. [2015-05-19]: NI 43-101 Technical Report on the Indata Property).

In 2008, Eastfield Resources Ltd. completed an induced polarization survey and 1035 metres of drilling. Highlights of this program include drillhole 08-02, which yielded 0.3 metre grading 8.2 grams per tonne gold, and drillhole 08-03, which intersected 0.5 metre grading 0.4 gram per tonne gold and 209 grams per tonne silver (Assessment Report 30549).

In 2010, Oceanside Capital Corp. optioned a 60 per cent interest in the Indata property. Through 2010 and 2011, Oceanside Capital Corp. completed an exploration program consisting of line cutting, soil sampling and induced polarization and magnetometer surveys. This program produced nine targets for future exploration including possible ophiolite-disseminated nickel deposits.

In 2012, Oceanside Capital Corporation and Eastfield Resources Ltd. constructed 3.2 kilometres of drill road access and six drill sites and collected 18 rock samples during the work, one of which yielded 0.78 per cent copper in a dacitic volcanic rock, a unit previously unknown on the property (Morton [Summary Report], 2013). The drill sites were still undrilled as of October 2013 reporting.

In 2013, a prospecting and rock sampling program was completed by Eastfield Resources Ltd., during which 29 additional rock samples, 61 silt samples and 52 soil samples were collected and analyzed. The most significant result was reported to be the discovery of additional copper-mineralized rubble samples in the vicinity of, and to the south of, the 2012 sample (0.78 per cent copper). Grid lines in this area of the claim are reconnaissance in nature but are now thought to identify a previously unknown copper target, again following a granodiorite-volcanic contact.

In 2019, Property Potash Corp., on the behalf of Eastfield Resources Ltd., completed a program of geological mapping, geochemical (rock and soil) sampling and trenching on the Indata property. The porphyry-type mineralization of the Lake zone, on the northeast corner of Albert Lake, was found to extend for 800 metres south from the 2012 drilling area, with samples yielding up to 0.48 per cent copper and 0.22 gram per tonne gold (Assessment Report 38744). A new road into the Northwest Limestone area (northwest Indata property) cut through an arsenic-antimony-lead-zinc-gold-manganese soil anomaly. Anomalous geochemical values were reported from roadcuts of brecciated limestone (karst?), with values of greater than 1 per cent manganese, 942 parts per million zinc, and 432 parts per million antimony (Assessment Report 38744). Although precious metal values from the zone are low, the geological setting and geochemistry are similar to that of manto-type mineralization present on the Stardust (MINFILE 093N 009) property, 20 kilometres to the north.

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
EMPR PF (Vancouver Stockwatch Sept.23, Oct.29, Dec.3, 1987; *Eastfield Resources Ltd. Newsletter; see Nifty, 093D 006 - Wildrose Resources Ltd. Corporate Information; 1989 Snapshot Review Form; Wildrose Resources Ltd. (2003): brochure)
EMPR PF Placer Dome (Placer Dome (1988): Diamond Drill Logs, DD 87-I-01 to 87-I-06 - Indata; Placer Dome (1988): Diamond Drill Logs, DD 88-I-01 to 88-I-06 - Indata; J.G. Payne (1987): Indata Petrographic Descriptions - 1985-87; G.L. Garratt, Eastfield Resources (1989): Notes - Indata Project; Eastfield Resources (unknown): Pole - dipole array, Grid A, north and south; G.L. Garratt (1989): News Release - Indata Project; M. Smith (1988): Field Note book - Indata Project; Eagle Mapping Services (1987): Topographical Map of Schnapps Claims; Eagle Mapping Services (1987): Generalized Geology, A and B grid areas, Schnapps claims; Eastfield Resources Ltd. (1987): Soil and rock chip sampling map of Eva; Eastfield Resources Ltd. (1987): Proposed work - Bruce Creek map; E. Kimura (1988): Indata Diamond Drill Hole Sludge Results; Eastfield Resources Ltd. (1988): Geochemical Lab Reports, Indata; Unknown (1988): Diamond Drill Hole Assays - Indata; Eastfield Resources (1988): Notes on Hole Sample Specimens; Eastfield Resources (1988): Notes on IP Survey; Chemex and Acme Labs (1988): Certificate of Analysis - A8822337; Eastfield (1988): Diamond Drill Hole section 87-1-02, 87-1-04 and 88-1-22 map; Eastfield (1988): Diamond Drill Hole section 87-1-03 map; Eastfield (1988): Diamond Drill Hole section 88-1-01 and 88-1-02 map; Eastfield (1988): DDH section 87-1-05 and 87-1-06 map; Eastfield (1988): DDH section 88-1-03, 88-1-04 and 88-1-05 map; Eastfield (1988): DDH section 88-1-06 and 99-1-21 map; Eastfield (1988): DDH section 88-1-09 and 88-1-08 map; Eastfield (1988): DDH section 88-1-09, 88-1-10 and 88-1-11 map; Eastfield (1988): DDH section 88-1-12 and 88-1-13 map; Eastfield (1988): DDH section 88-1-14 map; Eastfield (1988): DDH section 88-1-15 map; Eastfield (1988): DDH section 88-1-16 map; Eastfield (1988): DDH section 88-1-17, 88-1-18 and 88-1-23 map; Eastfield (1988): DDH section 88-1-20 map; Eastfield (1988): DDH logs, DD 85-1-01 to 85-1-04; unknown (1989): Indata 1989 Summary Report, Volume 3-B, Drillhole Logs for 1989)
GSC MAP 844A; 907A; 971A; 1424A
GSC OF 3071
GSC P 42-7; 42-11; 44-5; 45-6
GCNL #196, 1987; #172,#234, 1988; #53(Mar.17), #129(Jul.7), 1997; #4(Jan.7), #39(Feb.25), #72(Apr.15), #220(Nov.17), 1998
N MINER Oct.3, 1988
PR REL Eastfield Resources Ltd./ Wildrose Resources Ltd. Apr.14, 2003; Eastfield Resources Ltd./ Castillian Resources Inc. Apr.25, Sept.14, 2003; Castillian Resources Inc. Jul.30, Nov.11, 2003, Oct. 27, 2004; Eastfield Resources Ltd. May 2-8, 2004; Aberdeen International Inc./Eastfield Resources Ltd. Mar.14, May 31, Jul.14, Aug.23, 2005; Max Resource Group Jan.7, 2009; Oceanside Capital Corp./Eastfield Resources Ltd. Feb.21, 2012
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