Geological Investigations of the Context of Quartzite-hosted Zn-Pb Mineralization, Sito-Adams Lakes Area, Wollaston Domain (parts ofNTS 74A-4 and -5)

G.D. Delaney and D. Savage I

Delaney, G.D. and Savage, D. (1998): Geological investigations of the context of quartzite-hosted Zn-Pb mineralization, Sito­ Adams.lakes area, Wollaston Domain (parts ofNTS 74A-4 and -5); in Summary of Investigations 1998, Geological Survey, Sask. Energy Mines, Misc. Rep. 98-4.

1. Introduction the Sito West showing and mapped the geology of the surrounding area as part ofan M.Sc. thesis project at Five weeks during the summer of 1998 were spent the University of Saskatchewan. In 1977 and 1978, examining the context of Zn-Pb mineralization in the Potter mapped the area between Sito and Fable lakes. vicinity of Sito Lake near the southeast side of the This work formed the basis for an M.Sc. thesis at the Wollaston Domain (Figure I). This area contains eight University of Regina (Potter, 1980) and was a base metal occurrences, including some sandstone component of a study of base metal mineralization in hosted Zn-Pb ones, which, although of significant the Wollaston Domain by Coombe (1977, 1978a, b, grade and thickness, are subeconomic (Coombe, 1994). and 1994; Potter 1977, 1978). This work concludes the field work phase of a long­ term project aimed at a better understanding of the stratigraphic context of base metal mineralization in b) Mineral Exploration Activity Paleoproterozoic supracrustal rocks along the In 1971, Zn-Pb mineralization was discovered on the southeastern side of the Wollaston Domain (Delaney, peninsula in Sito Lake by Eric Partridge and Associates 1993, 1994; Delaney et al., 1995, 1996, 1997). This working with Wollex Exploration on behalf of the report summarizes some of the key aspects of CanDel-Husky consortium (SEM Assessment File stratigraphic relationships in the Sito Lake area and 74A-04-0008). The initial discovery, known as the Sito presents a preliminary synthesis of the stratigraphic West Showing, was followed by that of several other context of base metal mineralization in the Wollaston showings in the area between Robyn Lake in the Domain. northeast and Fable Lake in the southwest. Follow-up work included prospecting, trenching, geological Geological mapping focused on the area encompassing mapping, geochemical surveys, magnetometer, EM Sito and Adams lakes with the purpose of reviewing and SP surveys, and diamond drilling at the Sito East and augmenting observations of previous workers (i.e. and Fable Lake showings (SEM Assessment Files 74A- Potter, 1980). In addition, most showings were briefly 04-0009, -0010, -0011, -0012, -0013, and -0014; 74A- examined, as was selected core from recent diamond 05-0031, -0032, and -0034). Although this work drilling. As a part of this work, D. Savage is defined three significant occurrences of sandstone­ undertaking a B.Sc. thesis investigation under the hosted Zn-Pb mineralization-the Fable Lake, Sito East, direction of Dr. K. Ansdell at the University of and Sito West showings-none proved to be economic. Saskatchewan. The purpose of his study is to better In 1979, Mark V Petroleums and Mines Ltd. completed understand the nature, origin, and economic an airborne EM and mag survey over the Sito Lake significance of a thin unit oflayered garnet-pyroxene­ area. In 1980, Pressuag Ltd., entered into a amphibole rock in pelitic sedimentary rocks near the joint venture agreement with partners Mark V base of the Paleoproterozoic sedimentary succession. Petroleums Ltd. and Saskatchewan Mining Previous workers have suggested that this distinctive Development Corporation, to earn an interest in their unit is a variety of iron formation. Sito Lake area properties. A subsequent exploration program by Mark V included a lake sediment geochemical survey, ground EM and magnetometer 2. Previous Work surveys, and diamond drilling which focused on an area southwest of the Sito East shm-ving (SEM a) Scientific Assessment File 74A-05-0043). In t 990, Falconbridge acquired four claims over an area that encompassed the In 1973, Fuh (1976) mapped the east halfofthe Robyn Lake, Sito East, and Sito West showings. In Pylypow Lake (NTS 74A-5) at a scale of I :63,360. The 1991 , Noranda optioned the Falconbridge ground and east half of the Hewetson Lake map-sheet (NTS 74A- staked additional claims encompassing the showings to 4) was included in I: I 00 000 scale mapping of the the southwest, including the Fable Lake area. Foster Lake (south) and (northwest) areas in Subsequent follow-up work, that concluded in 1994, 1974 by Ray ( 1981 a). In 1972, Harper ( 1975) studied included geological mapping, boulder prospecting,

I Department of Geological Sciences, University of Saskatchewan, I 14 Science Place, Saskatoon. SK S7N 5F2.

Saskatchewan Geological Survey 29 WOLLASTON DOMAIN PETER LAKE DOMAIN Proterozoic Reworked Archean I L Proterozoic

CJ Granfte/granodlorlte FY,,: 1 Mofle/ telslc gneisses Wollastor, Lake and granltolds - Mylonfte Paleoproferozolc - Courtenay/Cairns Fold Baff ~ Rfft nil and rift cover supracrustal rocks Paleoproferozolc - Wollasfon Supergroup D Alkose/ calcareous arkose f?&d Fanglomerate/ conglomerate -·------? Unconformity ?------

~- : - ~ Quartz muscovite schist S Peltte/ psammlte ------·--- Unconforml1y ------Archean

U Fe/sic granltold ROTTENSTONE DOMAIN Paleoproterozo/c " 00 rJ',,~~ Granite (vi/BJ

10 20 30 _ __l____ L__ _ __ . J km

110 I02' 60"r------~---,60·

ATHABASCA BASIN

58"

106'00

MINERAL OCCURRENCES O Marina (Pb-Zn) 9 George Lake (Zn-Pb) 9 HUis Lake (Zn-Pb) 0 Janice Lake (Cu-Ag) 6) Simon (Pb-Zn) 8 Sito Lake (Zn-Pb) 9 Joannie (Zn) Figure 1 - Geological sketch map of the east-central part of the Wollaston Domain showing the location of the Sito Lake area. Al, Anderson Lake Inlier; HI, Hewetson lake Inlier; SI, Sito Lake Inlier; Fl, Fraser Lakes Inlier; JI, Johnson River Inlier; and NFSZ, Needle Falls shear zone. trench mapping and sampling, ground geophysical 3. Local Geology surveys, and diamond drilling in the vicinity of the Fable, Sito West, Sito East, and George showings, as a) Stratigraphy well as other geophysical and geological targets (SEM Assessment Files 74A-04-0020 and -0021; 74A-05- The Sito Lake area, near the southeast side of the 0044, -0045, and -0046). Although this work helped to Wollaston Domain, is underlain by a succession of better understand the context of mineralization at some metamorphosed and deformed Paleoproterozoic of the know showings, no new mineralization was sedimentary rocks in synformal keels flanked and defined. segmented by northeast-trending inliers of Archean granitoids in the cores of anticlines. These rocks have been subjected to at least four episodes of deformation and two episodes of upper amphibolite to lower

30 Summary offnvesllgations / 99H granulite facies metamorphism (Potter, 1980; Harper, observed by the authors was about 10 m and structural 1975; Coombe, 1994 ). attenuations are common along strike. To the northeast of Sito Lake, this subunit was observed along the The Archean inliers range in size from the few northwest side of the Anderson Lake Inlier by the kilometre-long unnamed bodies to the southeast of senior author during reconnaissance mapping in the Adams Lake to those that are several tens of kilometres summer of 1994. Geochemical analyses of a sample long, such as the Hewetson Lake and Anderson Lake suite from that area revealed some contained elevated inliers. There are compositional heterogeneities within to anomalous concentrations of Cu, Pb, Zn, Sr, V, Ba. individual Archean inliers and also between them. For and Au. Although no similar trace element data are example, although much of the Sito Lake Inlier is a available for exposures in the Sito-Fable lakes area, homogenous, coarse-grained, leucocratic granite, near Potter ( 1980) did present limited whole rock analyses. its margins it is locally highly strained and contains xenoliths and enclaves of fine-grained, calc-silicate­ The gamet-pyroxene-amphibole gneiss, which because bearing quartzofeldspathic paragneiss. The hooked­ of its unique character serves as an important shaped tail, that extends to the northeast from the main stratigraphic and geophysical marker, has been part of the inlier, is a fine-grained, leucocratic to interpreted to be a variety of silicate facies iron mesocratic, quartzofeldspathic granitoid. The unnamed formation (Potter, 1980). As noted in the introduction, inlier on the southeast side of Adams Lake includes D. Savage will be studying this unit to better some coarse-grained granite phases, but most of it is a understand its origin and economic significance fine-grained granitoid composed of 5 to 15 percent especially with respect to the Zn-Pb mineralization. biotite and locally magnetite, and in parts, as much as This study will include geochemistry and thin section 40 percent quartz. On a larger scale, much of the work. northwest half of the Anderson Lake inlier is a coarse­ grained leucocratic to mesocratic granite to The uppermost part of the basal pelitic unit comprises a granodiorite whereas most of the southeastern half is succession of garnet porphyroblastic biotite gneisses layered, fine-grained quartzofeldspathic paragneiss and schists that contain variable amounts of cordierite (Delaney, 1994). Potter ( 1980) and others observed and sillimanite. Potter ( 1980) estimated that this unit white granitic gneisses containing quartz-feldspar­ ranges from 150 to 500 m in thickness. sillimanite nodules at several places along the contact between the Archean inliers and the Paleoproterozoic The psammitic unit is exposed along Porcupine Creek, sedimentary rocks. These have been interpreted as in the Sito Lake area, and to the south of the study area derived from a regolith. along the west side Foster River in the vicinity of Fable Lake (Coombe, 1994). Th is distribution is much more The detailed stratigraphy developed by Potter ( 1980; restricted than that of the underlying pelitic gneiss unit. Coombe, 1994) for the sedimentary succession was The psammitic unit includes, at the base, a rusty adopted, in this study, with minor modifications. In the weathering succession of graphite- and pyrite-bearing vicinity of Sito Lake, these rocks are divided into a arkose with subordinate intercalated biotitic gneisses, basal pelitic unit and an overlying psammitic unit. subarkose and quartzites. These are overlain by a sequence of rusty brown weathering, hypersthene­ The basal pelitic unit, which Potter ( 1980) estimated to bearing biotite and gamet-biotite gneisses. be 300 to 500 m thick, is subdivided into three parts. The lower subdivision comprises pelitic and A mixed sequence of arkose, subarkose, quartz arenite psammopelitic gneisses; rare beds of quartzite, and graphitic garnet-sillimanite-bearing biotite gneiss subarkose, and arkose are intercalated in the sequence. comprises the uppermost subunit. This includes a thin, Some parts contain calc-silicate minerals. The pelitic well-layered sequence of subarkose and quartz arenite gneisses are medium-to coarse-grained biotitic that hosts Zn-Pb mineralization at a number of sites. quartzofeldspathic gneisses with porphyroblasts of one These rocks are only exposed in the cores of synclinal or more of the following: sillimanite, garnet, and keels such as that along Pine Creek and the one on the cordierite. Typically they contain minor disseminated, peninsula at Sito Lake where the Sito West showing fine-grained graphite, although locally, concentrations occurs. Limited exposure and the complications of of up to 15 percent have been observed (SEM multiple-phases of folding and faulting hinder a Assessment File 74A-04-002 I). thorough understanding of the relationships between the various rock types in this subunit. For example, at Overlying the basal succession is a narrow interval of the Sito West Showing previous workers (Harper, dark brown to maroon, layered garnet-pyroxene­ 1975; Potter, 1980) have interpreted structural data to amphibole gneiss. The composition of individual layers demonstrate that the showing is exposed in an ranges from those that are almost monomineralic anticlinal culmination within a larger syncline. In that garnet, pyroxene, or amphibole to those composed of scenario the mineralized quartz arenite and subarkose various mixtures of these minerals as well as biotite are underlain by si llimanite porphyroblastic arkose and and quartz. Potter ( 1980) noted chert layers in some overlain by graphitic gamet-biotite schist and gneiss. A outcrops. This subunit also contains disseminated review of core from recent diamond drilling by magnetite imparting elevated magnetic susceptibility Noranda Exploration (DOH FR 94-5; SEM Assessment values when compared with the adjacent pelitic and File 74A-05-0046), however, revealed that the showing psammopel itic gneisses. Although Potter ( 1980) actually occupies a tight syncline. The psamm itic unit reported thickness of up to 50 m. the greatest thickness

Saskatchewan Geological Surve_v 31 reflects a unique depositional environment restricted to subarkosic clasts (Delaney et al., 1995; l 996, 1997; the Sito-Fable lakes area. Tran et al.. this volume). b) Structure Some units in the Wollaston supracrustal succession exhibit gradual to abrupt facies changes both along and This structural style is the product of at least three across strike. One example, referred to in the previous episodes of folding (Potter, 1980). The first event, DI, paragraph, is the conglomerate at the base of the upper which is recognized throughout much of the Wollaston calcareous arkose assemblage, along the southeast side Domain (Lewry and Sibbald, 1980), is attributed to of the domain. In the Janice Lake area, this unit is thermal reworking of basement and the emplacement characterized by northwest to southeast facies changes. of granitoid gneiss domes to a level at or near the In the northwest it comprises a fanglomerate, at least contact between basement and the Paleoproterozoic l km thick, characterized by an intact framework of cover. DI formed rare small-scale isoclinal folds and a angular boulder-sized clasts of arkose (Delaney 1994, prominent foliation that is typically parallel to original Delaney et al., 1995); to the southeast, its consists of layering. The second event, 02, refolded DI structures several thinner tabular- and wedge-shaped bodies of into tight northeasterly trending folds with anticlinal conglomerate intercalated in arkose. Significant facies closures cored by Archean granitoids and intervening changes occur along strike to both the northeast and synforms containing Paleoproterozoic sedimentary southwest. Several tens of kilometres to the southwest, rocks. In the Sito Lake area, the plunge of these folds is in the Daly Lake area, the conglomerate is a relatively commonly moderate to steep to the northeast. This thin unit of mostly subangular to subrounded pebble­ contrasts with adjacent parts of the Wollaston Domain and cobble-sized clasts of arkose, subarkose, and where the plunge of these folds is generally shallow. In quartzite (Money, 1966; Ray, 1981 b; Tran et al., this addition to large-scale folds and numerous small-scale volume). folds which mimic them, 02 also produced a strong mineral lineation which is very common in the Some facies variations, particularly those in the basal granitoid rocks of the Archean inliers. A second pclitic assemblage, appear related to a basin foliation, S2, in the supracrustal rocks is developed architecture defined, at least in part, by Archean locally. A strong linear fabric associated with the granitoids that now occupy the cores of northeast­ strained margins of the granitoids is also probably trending antiforms. For example, in the Fraser Lakes related to 02 as are ductile to brittle-ductile shear area, Delaney et. al., ( l 996) demonstrated that the zones in the supracrustal rocks. Other than minor folds synclinal embayment along the southeast side of the that strike at 080° and refold the northeast-trending F2 Archean Fraser Lakes Inlier is a structurally modified folds at the Sito West Showing (Harper, 1975), original feature that controlled the deposition of evidence of 03 folding is sparse and consists of rare restricted facies. The localization of quartzite-hosted small-scale crenulation folds that plunge steeply to the Pb-Zn mineralization along the northwest side of the east. Late north-northwest-trending sinistral brittle Johnson River Inlier was also interpreted to be faults formed subsequent to the last episode of folding. controlled by original depositional embayments into the inlier.

The sedimentary succession in the Sito Lake area is 4. Wollaston Stratigraphy and the Context of included in the basal pelitic assemblage. Parts of this the Sito Lake Area succession at Sito Lake, such as the graphitic pelites Recent investigations in the eastern part of the and psammopelites in the basal pelitic unit, are found Wollaston Domain, (Delaney et al., 1995, 1996, and throughout much of the eastern Wollaston Domain. 1997; Tran and Yeo, 1997; Tran etal., this volume) Some units, however, are apparently more restricted in have refined understanding of stratigraphic distribution. An example is the layered gamet­ relationships and led to new insight into the pyroxene member which apparently extends only to depositional history of the Wollaston supracrustal the northwest side of the Anderson Lake In lier. Many succession (Yeo, this volume). Previous workers of the units which comprise the upper psammitic unit, recognized that throughout much of the Wollaston including the mineralized quartzites, are apparently Domain the supracrustal succession comprises two restricted to just the Sito-Fable lakes area. To the west, distinct assemblages. Ray ( 1979) named these rocks a sequence of arkosic gneisses containing elliptical the Wollaston Group and characterized them as clots of quartz and sillimanite, is correlated with the comprising a basal pelitic succession overlain and, in upper psammitic unit (Potter, 1980). This arkosic part, intercalated with a thick succession of arkose and gneissic unit is widespread throughout much of the minor conglomerate that locally contains calc-silicate eastern part of the Wollaston Domain. For example it rocks. These will be referred to as the basal pelitic can be traced along much of the northwest side of the assemblage and the upper calcareous arkose Johnson River Inlier (Delaney et al., 1996). assemblage in the following discussion. More recently it has been demonstrated that there is an unconformity and indeed a major temporal break between these two 5. Mineralization assemblages. Along some parts of the southeast side of the domain this break is marked by conglomerate Eight occurrences of base metal mineralization have characterized by a framework of mostly arkosic and been discovered in the Sito-Adams lakes area. Five of these, Sito East, Sito West, Robyn, George, and Fable,

32 Summary of fnvesliKations / 998 are characterized by bedded quartzite containing showings in the sediments which immediately overlie di sseminated Zn-Pb mineralization Two of the other it. showings, the Sito South and the Sito SW are characterized by disseminations and fractures fillings The Duddridge Lake area, near the southwest end of of sphalerite in boulders of green pegmatite. The Tosi the exposed part of the Wollaston Domain, straddles showing consists of chalcocite and chalcopyrite in a the unconformity between a heterogeneous granitoid sheared graphitic quartzite in the basal pelitic unit. For terrane to the east, and a 60 km long strip of unique more detailed information the reader is referred to the sedimentary rocks to the west. The sedimentary previously referenced Assessment files and reports by succession, referred to as the Meyers Lake Group, Harper(1975),Potter (l977, 1978, 1980),andCoombe includes a basal quartz-pebble conglomerate, overlain ( 1994). by quartzite, then pelitic sediments, followed by a thick sequence of arkose, conglomerate, and grit with intercalated pelites. The conglomerate and grit are 6. Stratigraphic Context of Base Metal tentatively correlated with those in the Jan ice Lake area. The Thor Cu-U prospect, the only significant Mineralization in the Wollaston Domain showing in the Duddridge Lake area, comprises Recent studies (Delaney, 1993, 1994; Delaney et al., copper-uranium mineralization within irregular 1995, 1996, 1997), have provided a much clearer carbonaceous lenses in arkose overlying the understanding (cf. Coombe, 1994) of the stratigraphic conglomerate. context of most base metal occurrences in supracrustal rocks of the Wollaston Domain. Virtually all of the c) Sedimentary Exhalative Zn-Pb economically significant base metal occurrences are found along the southeast side of the domain. This The Courtenay Lake-Cairns Lake Fold Belt, along the distribution refl ects not only distinct phases in basin east side of the Wollaston Domain, comprises a unique evolution, but also specific locales in the architecture succession of Paleoproterozoic supracrustal rocks of the evolving basin. The fo llowing summarizes the deposited in a rift settin g (Scott, 1970; Karup-Moller, main types of sed iment-hosted base metal 1970; Coombe 1977, 1978a and b, 1994; Lewry et al. , mineralization. 198 1; Delaney et al., 1997). The basal rift-fill part of the succession, which rests unconformably on Paleoproterozoic and Archean granitoids and a) Sandstone-hosted Zn-Pb and Pb-Zn paragneiss, comprises arkoses, conglomerates, and Two groups of sandstone-hosted Pb-Zn or Zn-Pb bimodal volcanics (Fossenier et al., 1995; MacNeil et occurrences in the basal pelitic assemblage are al.. 1997) overlain by quartz arenites. These rocks are recognized. One group, found along the northwest side capped by a thick rift-cover succession of graphitic of the Johnson River Inlier, is characterized by Pb-Zn mudstones, variab ly calcareous, fi ne-grained in quartzites at or near the unconformity between the siliciclastic rocks, rare carbonates, iron formation, and basal pelitic assemblage and the Archean granites of arkoses. A number of key indicators suggest that the the in lier. The mineralized quartzites appear to be fin e-grained siliciclastic rocks of the Spence Lake localized in original depositional embayments into the Formation, in the upper part of the rift cover inlier. Examples of this type are the Marina and Hills succession, are favorable for Sedex-type base metal Lake occurrences (Figure I). minerali zation. These include (Delaney et al., 1997; Delaney, 1998; Ti sdale et al. . 1997): The second group comprises Zn-Pb mineralization hosted in quartzites of the upper psammitic unit of the I) oxide and silicate facies iron formation formed basal pelitic assemblage in the Sito Lake area. These from venting hydrothermal solutions at the quartzites are of limited distribution, occurring in sedi ment-water interface, proximity to the Hewetson Lake In lier in particular 2) evaporitic minerals associated with the iron where there are adjacent inliers to the northwest. formation and interpreted to be derived from saline brines, b) Sediment-hosted Stratiform Copper 3) restricted sub-basins that would have been Two distinct occurrence types are recognized; the Cu­ amenable for the containment of a sulphide lens, Ag mineralization at Janice Lake (Figure I) and the 4) periods of low sedimentation that wou Id allow the Cu-U mineralization at Duddridge Lake. accumulation of uncontaminated massive sulphides. and In the Janice Lake area, over 20 copper occurrences are associated with conglomerate/fanglomerate and 5) zinc- and lead-rich pyritic mudstones interpreted overlying sediments at the base of the upper calcareous to be the dista I expression of a massive sulphide arkose assemblage (Delaney, 1994; Delaney et al., lens. 1995). Basin geometry influenced a major control on Add itional ev idence of the high-Sedex potential of the mineralization as most showings occur in the proxim al fold belt is fo und in quartzites of the Souter Lake parts of a thick red bed fanglomerate as irregular patchy Formation at the top of the rift fill succession . These concentrations or as sediment-hosted stratiform host the George Lake (Figure l) deposit of 5 million tonnes of2 .65 percent Zn and 0.35 percent Pb

Saskatchewan Geological Survey 33 (Coombe, 1994; Karup-Moller and Brummer, 1970). Investigations 1997, Saskatchewan Geological This mineralization is interpreted by us to have formed Survey, Sask. Energy Mines, Misc. Rep. 97-4, from the precipitation of sulphide-bearing p90-IOI. hydrothermal waters moving through the quartzite. Delaney, G.D., Maxeiner, R.O., Rawsthorne, M.L .. Reid, J., Hartlaub, R., and Schwann, P. ( 1995): 7. Acknowledgments Geological setting of sediment-hosted copper mineralization in Janice Lake area, Wollaston Wayne Darch , Noranda Exploration Co. Ltd., is Domain; in Summary of Investigations 1995, thanked for discussions on the geological context of Saskatchewan Geological Survey, Sask. Energy the mineralization and access to confidential Mines, Misc. Rep. 95-4, p30-48. information. Dean Gerhardt provided invaluable help during field work. Delaney, G.D., Tisdale, D., and Davies. H. (1996): Stratigraphic relationships and base metal mineralization in the lower Proterozoic 8. References supracrustal assemblage along the Archean Johnson River Inlier, Wollaston Domain, Coombe, W. (1977): La Ro nge-Wollaston belts base Saskatchewan; in Summary of Investigations metals project: George, Hills, Johnson and Kaz 1996, Saskatchewan Geological Survey, Sask. lakes and Geikie River areas; in Summary of Energy Mines, Misc. Rep. 96-4, p3-I I. Investigations 1977 of the Saskatchewan Geological Survey, Sask. Dep. Miner. Resour., Fossenier, K., Delaney, G.D., and Watters, B.R. p85-104. (1995): Lithogeochemistry of volcanic rocks from the Lower Proterozoic Courtenay Lake Formation, - --=--- - ~(1978a): Wollaston base metals project, Wollaston Domain; in Summary of Investigations Spence Lake area; in Summary of Investigations 1995, Saskatchewan Geological Survey, Sask. 1978, Saskatchewan Geological Survey, Sask. Energy Mines, Misc. Rep. 95-4, p49-60. Dep. Miner. Resour., Misc. Rep 78-10, p92-97. Fuh, T. (1976) The Geology ofthe Pylypow Lake Area _ ___ _ (1978b): Wollaston base metals project, (east half), Saskatchewan; Sask. Dep. Miner. Duddridge Lake to Meyers Lake; in Summary of Resour., Rep. 174, 12p. Investigations 1978, Saskatchewan Geological Survey, Sask. Dep. Miner. Resour., Misc. Rep 78- Harper, C.T. (1975): The Geology of the Zinc-lead 10, p98-I 08. Deposit at Sito Lake, Northern Saskatchewan; unpubl. M. Sc. thesis, Univ. Sask., 73p. _ _ _ _ _ (1994): Sediment-hosted Base Metal Deposits of the Wollaston Domain, Northern Karup-Moller, S. ( 1970): Geology of the Compulsion Saskatchewan; Sask. Energy Mines, Rep. 213, River Fold Belt; Western Miner, v43 , no 2, p35- 108p. 5 l.

Delaney, G.D. (1993): A re-examination of the context Karup-Moller, S. and Brummer, J.J. ( 1970): The ofU-Cu, Cu, and U mineralization, Duddridge George Lake zinc deposit, Wollaston Lake area, Lake, Wollaston Domain; in Summary of northeastern Saskatchewan; Econ. Geo!., v65, Investigations 1994, Saskatchewan Geological p862-874. Survey, Sask. Energy Mines, Misc. Rep. 93-4, p53-6 I. Lewry, J.F., and Sibbald, T.1.1. ( 1980): Thermotectonic evolution of the Churchill Province in northern _ _ _ _ _ (1994): Geological setting ofsediment­ Saskatchewan; Tectonophysics, v68, p45-82. hosted copper mineralization in the area southwest of Janice Lake, Wollaston Domain; in Summary of Lewry, J.F., Thomas, D.J., Rees, C.J ., and Roberts, K. Investigations 1994, Saskatchewan Geological (1981): Geology of an area around Compulsion Survey, Sask. Energy Mines, Misc. Rep. 94-4, Bay, Wollaston Lake; Sask. Miner. Resour., Rep. p53-61 . 205, 27p.

- ~ ~~- -( 1998): The Paleoproterozoic Courtenay MacNeil, A., Delaney, G.D., and Ansdell, K. ( 1997): Lake-Cairns Lake Fold Belt, Wollaston Domain, Geology of the Courtenay Lake Formation in the Saskatchewan: An area of high Sedex potential; Cook Lake area, Wollaston Domain, northern Abstract Volume, GAC/MAC Annual Meeting, Saskatchewan; in Summary of Investigations May 1998, Quebec City, Abst. Vol., v23, p A-43. 1997, Saskatchewan Geological Survey, Sask. Energy Mines, Misc. Rep. 97-4, p 115-1 20. Delaney, G.D., MacNeil, A.J., Jankovic, Z., McGowan, J. , and T isdale, D. ( 1997): Geological McGowan, J. , Delaney, G.D., and Ansdell , K. ( 1997): investigations in the Courtenay Lake- Cairns Lake The Jansem 2 Cu-Ag showing, Janice Lake area, Fold Belt and the Hills Lake embayment. Wollaston Domain; in Summary of Investigations Wollaston Domain, Saskatchewan; in Summary of

34 Summary of Investigations ! 998 1997, Saskatchewan Geological Survey, Sask. Energy Mines, Misc. Rep. 97-4, p121-1 24.

Money, P.L. ( 1966): The Geology of the Daly Lake (east half) Area, Saskatchewan; Sask. Dep. Miner. Resour., Rep. 108, 48p.

Potter, D. (1977): La Ronge-Wollaston belts base metal project: Sito Lake area; in Summary of Investigations 1977 of the Saskatchewan Geological Survey, Sask. Dep. Miner. Resour. , pl05- 110.

(1978): Wollaston base metals project, Sito Lake area; in Summary of Investigations 1978, Saskatchewan Geological Survey, Sask. Dep. Miner. Resour. , Misc. Rep. 78-10, pl09-1 l2.

(1980): Zinc-lead Mineralization in the ---Wollaston Group stratigraphy, Sito-Fable Lakes Area, Saskatchewan; unpubl. M.Sc. thesis, Univ. Regina, I J9p .

Ray, G.E. (1979): Reconnaissance bedrock geology, Wollaston Lake east (part ofNTS area 64L); in Summary of Investigations 1979, Saskatchewan Geological Survey, Sask. Miner. Resour., Misc. Rep. 79-IO, p 19-28.

- --:---,--o-ccc-- ( 1981 a): Geology of Part of the Foster Lake (South)-La Ronge (Northwest) Area (NTS areas 73P-1 3E, -14 and 74A-2,-3,-4E); Sask. Miner. Resour., Rep. 185, 31 p.

- ~~_(198lb): Bedrock Geology and Geochemistry, Daly Lake (West) Area and Part of Middle Foster Lake Area (NTS area 74A-1 2W and part of area 74A-I I W); Sask. Miner. Resour., Rep. 208, 34p.

Scott, 8 .P. (1970): The Geology of the Combe Lake Area, Saskatchewan; Sask. Dep. Miner. Resour., Rep. 13 5, 32p.

Tisdale, D.T., Delaney, G.D., and Ansdell, K . (1997): The iron fonnation member of the Spence Lake Formation, Paleoproterozoic Courtenay Lake­ Caims Lake Fold Belt, Wollaston Domain, Saskatchewan; in Summary of Investigations 1997, Saskatchewan Geological Survey, Sask. Energy Mines, Misc. Rep. 97-4, pl02-114.

Tran, H. and Yeo, G. (1997): Geology of the Burbidge Lake- northern Upper Foster Lake area, eastern Wollaston Domain (NTS 74A- I 4 ); in Summary of Investigations 1997, Saskatchewan Geological Survey, Sask. Energy Mines, Misc. Rep. 97-4, p72-89.

Saskatchewan Geological Survey 35