GM 40396 REPORT ON THE SYENITE NEAR THE GOODWOOD RIVER I

REPORT ON THE NEAR THE GOODWOOD RIVER QUEBEC

EXPLORATION PERMIT 670

NTS 23 0 ,/ 4

WORK PERIOD: 14 July 1982 to 14 July 1983

REPORT DATE: September 1983

Ministère de l'Énergie et des Ressources Gouvernement du Québec Service de la Geoinformatioti 4 JAN, 1984 DATE No G.M 40396 ..,.~,..~

A. Barry S.L. Fumerton i

SUMMARY AND RECOMMENDATIONS

Three closely spaced nepheline syenite bodies have been found 75 km northwest of Schefferville. They were emplaced in the Superior Basement and are deformed and metamorphosed by the Kenoran Orogeny. Only three (3) main petrographic phases have been recognized, the main leuco-nepheline syenite (essexite) phase, a mela-nepheline syenite (ijolite) minor phases, and a mixed leuco-nepheline syenite/ pegmatite phase. The bodies are crudely zoned with nepheline being greatest in the cores and ranging from 0 - >60% nepheline. Other related alkalic rocks such as are not known but may exist some distance from the nepheline syenite.

No further field work is recommended at present on the nepheline syenite itself, but regional reconnaissance for other alkalic rocks should continue. ii

CONTENTS

PAGE

LIST OF MAPS IN BACK POCKET LIST OF FIGURES iv

INTRODUCTION 1 OBJECTIVES 2 RECONNAISSANCE EXPLORATION 2 Boulders 2 Aeromagnetic Anomalies 4 LOCATION AND ACCESS 4 GENERAL GEOLOGY 5 Migmatite 5 Granitic Rocks 6 Granitoid rocks and Gneisses 6 Nepheline Syenite 7 Pegmatite 11 STRUCTURE AND AGE 14 GEOLOGICAL DISCUSSION AND CONCLUSION 14 WORK AND COST SUMMARY 17 REFERENCES 18

Appendix I - Analytical Results 19 Appendix II - Modal Analyses 30 iii

LIST OF MAPS

In back pocket

S CALE

1 Distribution of Nepheline Syenite boulder 1:250 000

2 Aeromagnetic Anomalies Investigated 1:250 000

3 Detail geology N.W. Sheet 1:10 000

4 Detail geology S.E. Sheet 1:10 000

5 Reconnaissance Geology 1:50 000 LIST OF FIGURES

1 Location of the nepheline syenite

2 Geological sketch map body no. 1

3 Geological sketch map body no. 2

4 Geological sketch map body no. 3 (Lac Langis)

5 Mineralogical Modes

6 Mineralogical Norms and Rock Classification 1

INTRODUCTION

During IOC's systematic mapping program in 1951, Dr. S.A. Ferguson noted the occurrence of nepheline syenite boulders. These boulders were found to be most abundant west of Eclipse Lake but were also known from southeast of Eclipse Lake and north of Purdy Lake. Ferguson mentioned the economic potential of nepheline syenites and recommended additional work to pursue this aspect. At that time non-ferrous deposits were of little interest to IOC and no follow-up work was undertaken.

Such boulders are mentioned in Currie's (1976) description of the Seward Group lavas and sills within the Labrador Trough, where it is suggested that there might be a relationship bet- ween these sills, lavas and the nepheline syenite.

The existance of nepheline syenite boulders near Eclipse Lake was brought again to the attention of IOC in 1981 by J. Gittins. A brief reconnaissance of the area by IOC in 1981 located some of the original boulder fields, but did riot find the source. In 1982 this reconnaissance work was continued and resulted in the discovery of three nepheline syenite bodie . The discovery was made by checking anomalies on recently published federal aeromagnetic map (GSC 1982) , "up ice" on the alledged ice direction from the known boulder fields. Priority was given to anomalies coincident with the syenite occurrence reported by Baragar (1967). Numerous other aeromagnetic anomalies and circular structure were also checked but without success. Initial reconnaissance geological mapping of these nepheline syenite occurrences was followed by more detailed mapping; the result of this work is summarized here. 2

In July 1982 IOC was granted an exploration permit by the Quebec Government. This permit (EP 670) covers all known occurrences of nepheline syenite. (Fig. 1)

OBJECTIVES

The principle objective of investigating these previously unknown nepheline syenite bodies is to increase our knowledge of alkalic rocks in the area. It is hoped that such knowledge will aid in the discovery of more economically interesting related rocks, be they kimberlites, carbonatites, or peralkaline granites. The secondary objective is to assess the economic potential of the nepheline syenite itself.

RECONNAISSANCE EXPLORATION

Boulders

Initial exploration efforts in the nepheline syenite project were directed towards duplicating the observations of Dr. Ferguson, particularly near Eclipse Lake.

West and south of Eclipse Lake the boulder field was roughly delineated. Within the area examined the size and abundance of nepheline syenite boulders generally increase towards the known nepheline syenite occurrences. No nepheline syenite boulders were found south and east of the presently known syenite bodies. 67°30' LAC LE HE L LU VA FER LAKE

1 \ f CANOE LAKE FLYCAMP LAKE

t

EXPLORATION PERMIT 670

3°0O"- —55°00'

KEY ~ PROVINCIAL BOUNDARY *%. — — e SECONDARY ROADS ~• LSCHEFfERV1LLE 9 •0 1 SCALE } y It II RAILWAY `•~~• X~•

O NEPHELINE SYENITE

67°30' FIGURE: I LOCATION OF THE NEPHELINE SYENITE 4

Aeromagnetic Anomalies

Most of the circular and linear aeromagnetic anomalies recorded on the federal maps immediately west of the Labrador Trough were inspected during the reconnaissance exploration. The majority are located over:

1.'mantled mi gmati to domes; 2. medium-grained weakly foliated granitoids, probably granodioritic to tonalitic in composition, and

3. narrow deeply incised valleys located over basement faults or later dykes.

Only two of the aeromagnetic anomalies investigated are in part coincident with the nepheline syenite bodies.

LOCATION AND ACCESS

The nepheline syenite occurrences described in this report are situated some 75 km (45 miles) northwest of Schefferville (Fig. 1) and are contained within the Flycamp Lake map sheet NTS 23'0'/4.

Present access to most of the area is possible with float equipped aircraft, but the northwestern part of the area is most efficiently accessed by helicopter. The nearest road is approximately 15 km from the centre of the permit. This road is part of IOC's exploration development road network related to the iron ore deposits.

1

5

GENERAL GEOLOGY

Three closely spaced and probably related, nepheline syenite bodies have intruded into the rocks of the Superior Province near its eastern margin with the northwest trending Labrador Trough. These rocks, which are migmatites and granites, have formed part of a stable basement since the Kenoran orogeny and are referred to as the Basement Complex by Baragar (1967) . All rocks within this basement are complexly folded and granitic rocks commonly occur within the core of tectonic domes. According to Baragar this deformation occurred under upper amphibolite to granulite facies of metamorphism.

The five rock types recognized during the course of mapping are listed below in inferred chronological order:

Youngest 6 5 Pegmatite 4 Nepheline syenite 3 Granitoid 2 Granite/granodiorite Oldest 1 Migmatite

Migmatite

Migmatite of various composition and texture is inferred to be the oldest rock within the exploration permit. Typically it is a textural metatexite with a fine-grained to medium-grained biotite gneiss paleosome, and the neosome is a fine-grained, quartz, feldspar pegmatite. Baragar (1967) classified this rock as banded gneisses and gives a more extensive description. (Baragar 1967, p. 12). 6

Granitic rocks

Three separate granitic bodies are known to occur within the exploration permit. Granodiorite occurs in all three, but in the body adjacent to the Lac Langis nepheline syenite body (# 3) the granodiorite core is mantled by a zone of monzodiorite in contact with the nepheline syenite.

The granodiorite is typically non-foliated, equigranular and contains 15-25% quartz, 20-30% K-feldspar, 60-70% , 5-10% biotite and 2-3% and amphibole combined. In addition, accessory amounts of apatite, and zircon occur in this unit. The monzodiorite is very similar to the granodiorite but contains very little or no quartz, and the contact between the granodiorite and monzodiorite appears to be gradational. It is not known whether this compositional difference is a primary feature associated with the granodio- rite body, or some secondary feature such as alkali metasomatism of the granodiorite caused by the nepheline syenite.

Granitoid rocks and gneisses

Two types of granitoid rock and biotite gneiss have been recognized, both occur as xenoliths of varying size within the nepheline syenite. The most abundant (lb) is a friable, biotite-rich variety that occurs in the two larger nepheline syenite bodies. Typically it consists of feldspar, biotité (10-20%) , magnetite/ (5-10%) , and trace amounts of quartz. In outcrop it commonly has a rusty stain.

The second variety is a much more competent and massive rock which typically consists of plagioclase, biotite (5-10%), magnetite/ilmenite (<2%) and variable amounts of quartz (<5%). In some places there is no quartz but aggregates of fine grained alteration minerals possibly derived from nepheline grains. 7

These xenoliths are interpreted to be altered equivalents of the surrounding migmatites and granitic rocks.

Nepheline syenite

The three bodies found so far, which occur in close proximity to each other, are different in size and character. The largest, number 1 (Figures 1 and 2) underlies approximately 10 km2. The smallest, number 2 (Figures 1 and 3) occupies less than 2 km2, but may be connected at depth to body number 3 (Figures 1 and 4) , which has a surface area of approximately 6 km2.

On a regional scale the contacts of the nepheline syenite parallel the banding and foliation in adjacent rocks, but in detail the migmatitic banding is locally oblique to the contacts of the nepheline syenite. This was observed on the SW contact of body number 1 (<40°) and in the southern part of body number 3 (-90 °) :This in addition to the existence of a nepheline syenite dyke within the migmatite, and of granitoid xenoliths within the nepheline syenite bodies indicates that the nepheline syenite intruded the Superior Basement.

Petrographically three main types of nepheline syenite are recognized, leuco-nepheline syenite (essexite) , a mela-nepheline syenite (ijolite; see rock classification, Fig. 5, 6) and nepheline syenite complexly interbanded with feldspar veins. The melacratic phases are rare and may be auto-xenoliths and/or - dykes. Cross-cutting intrusive relationships were observed within the bodies, but it proved impossible to map the various magmatic phases. Consequently the mapping is primarily based on the nepheline content estimated in the field, with arbitrary divisions at 5, 20, 40 and 60% nepheline.

KEY 6 Gabbro 5 Pegmatite 4 Nepheline Syenite a) 5% >- Np (Nepheline) b) 20%_>Np>-5% ------r-5= :A c) 40%>_ Np>_ 20% 'r _ • - ~ ,' ••. 4b d) 60% > Np >_ 40% .... •83 -•• •82 e) Np 2:60% ..• ...c==..5 •ia ', 84 ..... c~ 3 Granitoid / •. • t 4d'••. ~ \ • 22-23 ~/ ~ ' ~3 ...... 1`3 ;' 2 Granite 3 I Migmatite• • 75 4c JIl. Poison

Lake ~ 3 ~09 4d ' • Sample (NF 04975) \` ` ..;: 75 ".4d ç`J3 d a / '74 • Geological Contacts ....' 3 •86 •..4d''' Ikm .21 1 / • c.:- 4c . , 4b s7_• 7 7 / 2 / I ~. / ` / ` 5 ./ -- ' / i FIGURE: 2 IRON ORE COMPANY OF CANADA Geological Sketch Map NEPHELINE SYENITE PROJECT Body No I (Poison Lake) N.T.S. 23 0/4W A. BARRY MAPPED BY: S. L. FUMERTON

DECEMBER 1982 KEY

6 Gabbro 5 Pegmatite 4 Nepheline Syenite a) 5% ?Np (Nepheline) b) 20%>_ Np >_ 5% c) 40%>Np >_ 20% d) 606/. ?Np? 40% e) NP ?.60% 3 Granitoid ~r 2 Granite t Migmatite (

• Sample (NF 049751 75

2 • Geological Contacts

M~ ~~ Ikm 5`~ 5\`i..

• FIGURE: 3 IRON ORE COMPANY OF CANADA Geological Sketch Map NEPHELINE SYENITE PROJECT Body No 2 (Spook Lake) N.T.S. 23 0/4E : A. BARRY MAPPED BY S. L. FUMERTON

DECEMBER 1982 KEY

6 Gabbro 5 Pegmatite 4 Nephetine Syenite a) 5'/a >_ Np (Nepheline) b) 20%>Np>-5'/0 c) 40% Np ?_ 20% C d) 60% > Np >_ 40% e) Np ? 60'/0 •90 3 Granitoid \d •'•• . 2 Granite s;{. 4 c t Migmatite A '. •96 ~•9%~~'•. ~ 5 •. ~ '~I..•~ ~13 99. 94 Sample (NF 04975) •75 „ 5•' âc ~ 4c : ;4e • /11 Geological Contacts ' i4b 3~ 93!S ----~4Ç+ ,,,5 , . ., ...... --- -~- -- 4c ..... 4d• 7 ' .g~- --- 1km 1 e9. • 8 8 4 d 2

~ 2 2

FIGURE: 4 IRON ORE COMPANY OF CANADA

Geological Sketch Map NEPHELINE SYENITE PROJECT Body No 3 (Lac Langis) N.T.S. 23 0/4E

MAPPED BY: A. BARRY S. L FUMERTON

DECEMBER 1982 11

The grainsize varies between 0.3 - 15 mm but mafic minerals rarely exceed 5 mm. Compositionnally the rock is highly variable (Figures 5 and 6 and Appendix 1) and tends to be richer in nepheline in the centre of the bodies and consists of nepheline, perthite, biotite, clinopyroxene, opaques (magnetite) and apatite. Modes (Appendix 2) indicate that field estimates err slightly but erratically on the high side for nepheline and are not precise, but never-the-less the trend towards high nepheline content in the centre of the bodies is real. The nepheline is altered in varying degrees to cancrinite and other fine grained related minerals, though commonly these alteration products have recrystallized into coarser prismatic minerals with preferred orientations, possibly under prograde metamorphic conditions. Perthite is locally recrystallized to microcline and plagioclase. Biotite and magnetite are conspicious by their common deeply embayed "corroded" grain outline. Clinopyroxene is usu.11y poikilitic and rarely altered to arvedsonite, or mantled by riebeckite needles preferentially orientated parallel to each other.

A conspicious feature is the occurrence of crystollographic distortions in most felsic mineral phases and micro shear zones with associated comminution.

Pegmatite

Pegmatite bands and lenses are widely distributed within the nepheline syenite where they are typically <10 cm thick have diffuse boundaries and can form up to 50% of an outcrop. They are formed primarily of medium-to coarse-grained feldspar microline and plagioclase with accessory biotite and magnetite.

Alternatively large pegmatite lenses occur near the contacts of the syenite bodies or more rarely within them. These are very coarse grained <20 cm, have some monomineralic bands up BIOTITE NEPHELINE CHLORITE

FELDSPAR MAFICS MAGNETITE PYROXENE ILMENITE AMPHIBOLE

O MODES OF STAINED SLABS

• MODES OF THIN SECTIONS

FIGURE: 5 MINERALOGICAL MODES AND ROCK CLASSIFICATION NEPHELINE NEPHELINE L LUCITE LEUCITE

20

FOI DO LITE URTITE • IJOLITE MELTEIGITE

AO

of. FOID • FOID QO MONZO SYENITE MONZO DIORITE

( ESSEXITE ) i0

N • • ÿ • •

• •

• • FOID FOID FOID A BEARING BEARING • BEARING B SYENITE MONZONITE MONZO DIORITE

FELDSPAR MAFICS ALKALI FELDSPAR PLAGIOCLASE

• NEPHELINE SYENITE A = FOID BEARING ALKALI FELDSPAR SYENITE

• PEGMATITE B. FOID BEARING DIORITE /GABBRO

FIGURE: 6 MINERALOGICAL NORMS AND ROCK CLASSIFICATION 14

to 3 m long and are composed of feldspar and biotite (-10%) , with nepheline, pyroxene, amphibole, pyrite/pyrrotite plus magnetite as accessory phases varing from zero to a few percent. Locally the nepheline grains have been completely altered to fine grained analcite.

STRUCTURE AND AGE

The existence of a strong lineation and foliatibn within the nepheline syenite, best developed near the contacts, parallel to the lineation and foliation within the basement granitic rocks indicates that the nepheline syenite has been tectonic- ally deformed. This is also supported by what may be folded dykes/banding, distorted crystalographic structures, and micro shear zones within the syenite. Together with the evidence for metamorphism this suggests that the nepheline syenite was subjected to the Kenoran Orogeny the last major thermo-tectonic event which affected the Superior Province. Also this is consistent with the K/Ar age determination of 2398 ± 72 m.a. for one sample of nepheline syenite obtained for IOC by Telydene Isotopes Ltd. Baragar (1967) reported i a comparable 2365 m.a. K/Ar age for adjacent gneisses.

GEOLOGICAL DISCUSSION AND CONCLUSION

The nephline syenite boulders have been known since the 1950's but not their source. As the greatest known concentration of boulders in that period was near Eclipse Lake which is within the Labrador Trough, the possibility that the nepheline syenite was emplaced within the Kaniapiskau Super Group was considered. Furthermore, this occurrence was tentatively correlated with nepheline syenite sills emplaced in the Kaniapiskau supracrustals 15 prior to the peak of deformation which affected rocks within the Trough (Currie 1976).

After the nepheline syenite source was located within the Superior Province, the age and tectonic relationships were not obvious to W.R.A. Baragar, K.L. Currie, J. Gittins or IOC and several possibilities were considered. Firstly, the nepheline syenitè was part of a northeast trending belt related to the major magnetic anomaly at Wakuach Lake NE faults cutting the Labrador Trough (? and Strange Lake) . Secondly, the nepheline syenite was part of the'northeast trending alkalic rocks of the pre-Grenville Gardar Province (Baragar 1982 written communication). Thirdly, the nepheline syenite was related to the northwest trending Labrador Trough, either in its incipient or final phases.

The first suggestion that none of'these hypotheses were correct, and that the nepheline syenite predated any hypothesis, were the noted metamorphic textures of the nepheline syenite (Gittins 1982 written communication), the tectonic deformation observed in the field, and confirmed by the K/Ar age determination similar to the surrounding gneisses. In addition to the age discrepency, there is also no apparent structural relationship relating the Goodwood River nepheline syenite to the other alkalic i rocks. Consequently these nepheline syenites must be regarded as isolated occurrences or part of a new, as yet unidentified, Archean suite of alkalic rocks unrelated to the younger alkalic suites.

In conclusion, the nepheline syenite bodies near the Goodwood River intruded the basement rocks of the Superior Province, and like the host rocks were metamorphosed and deformed during the Kenoran Orogeny. Furthermore, these- rocks are unrelated to other known alkalic rocks in the area, and whether they are 16

isolated occurrences or part of a larger alkalic province is presently unknown. Any genetically related tectonic structures have in all probability been obliterated by the Kenoran Orogeny. Elsewhere in Canada, Archean miaskitic nepheline syenites are rare and apparently occur as isôlated intrusions of restricted composition (e.g. Poohbab Lake and Sturgeon Lake intrusions, in Ontario). However, age considerations aside, nepheline syenite is common in alkaline provinces which contain carbonatites (e.g. Coldwell and Kapuskasing alkaline provinces in Ontario, Currie 1976).

17

WORK AND COST SUMMARY - EP670 - ENDING DECEMBER 1982

LABOUR

Days

S.L. Fumerton 36 $ 4,505.87 A. Barry 60 6,119.43 L. St-Gelais 38 3,476.02 G. Cyr 30 2,064.16 E. Foreman 15 2,312.11 R. Boucher 13 1,777.73 A. Mailloux 4 571.93

$ 20,827.25

TRANSPORTATION

Fixed Wing 5.71 hrs @ $ 175/hr $ 999.00 Helicopter 37.64 hrs @ $ 292.13/hr 10,995.00

$ 11,994.00

CAMP OPERATION

Camp Operation and Supplies $ 2,243.52

CHEMICAL ANALYSES

Analyses, $ 738.45 Geochronology 500.00

CONSULTANT

J. Gittins $ 600.00

OTHER SEPT-ILES COST PRORATED $ 10,719.86

TOTAL $ 47,623.08

REQUIRED EXPENDITURE $100/km2 $ 10,000.00

SURPLUS EXPENDITURE TO DECEMBER 1982 $ 37,623.08 18

REFERENCES

Baragar, W.R.A. (1967). Wakuach Lake Area, Quebec Labrador (211) GSC Memoir 344.

Currie, K.L. (1976). The alkaline rocks of Canada. G.S.C. Bulletin 239.

Ferguson, J. (1964) . Geology of the Ilfmaussaq alkaline intrusion South Greenland, GrOlands Geologiske undersogelse Bulletin 39.

Ferguson, S.A. (1951). Report on the geology of Eclipse Lake and Purdy-Ritchie Lakes areas. Unpublished I.O.C. report D240-51D.

GSC - QMRIN, (1982). Aeromagnetic Map 23'0' Rivière Swampy Bay Map 7423G. 19

APPENDIX I

ANALYTICAL RESULTS

Chemical analyses, grouped according to field classification

Nephe line syenite

4a 0 - 5% nepheline 5 - 20% nepheline c 20 - 40% nephe line d 40 - 60% nepheline e >60% nephe line

TABLE I.1 Analyses from Unit 4b 1.2 Analyses from Unit 4c I.3 Analyses from Unit 4d I.4 Analyses from Unit 4e I.5 Analyses from ijolites 1.6 Analysis from granitoid xenolith 1.7 Analyses from pegmatites r.8 Duplicate analyses sample NF0 49 70 I.9 Duplicate analyses sample NF0 49 7 4 I.10 Duplicate analyses sample NF0 49 81 20 TABLE I . 1

CHEMICAL ANALYSES FROM THE 5 - 20% NEPHELINE (UNIT 4b)

PORTION OF THE NEPHELINE SYENITE

SAMPLE # 04987 BODY • 1

% Si02 53.4

TiO2 0.30

A1203 24.8

Fe203 3.90

Fe0 -

Mg0 0.64

Mn0 0.04

CaO 0.86

Na2 10.5

K20 4.93

P,205 0.02

LOI .39

TOTAL 99.9

ppm Rb 120

Sr 1730

Zr 0

Analysis by X-Ray Assay Laboratories, August 1982 21

TABLE 1.2

CHEMICAL ANALYSES FROM THE 20 - 40% NEPHELINE PORTION OF THE NEPHELINE SYENITE (UNIT 4c)

SAMPLE I 04708+ 04714+ 04715+ 04716+ 04717+ 04718+ 04721' 04970' 04971+ 04975+ 04976' 04982* 04983* 04986* 04991* BODY 2 1 1 1 1 1 1 3 1 1 1 1 1 1 1

L Si02 49.0 57.7 56.0 55.7 55.4 55.6 57.1 54.5 57.1 56.0 57.1 56.0 58.6 57.3 58.3

TiO2 0.57 0.23 0.26 0.24 0.21 0.26 0.49 0.36 0.50 0.31 0.38 .19 0.40 .34 0.59

A1203 19.4 20.4 20.5 21.3 21.2 21.4 21.3 22.2 21.4 22.2 22.2 '21.4 21.0 21.8 19.9

Fe203 11.2 3.87 5.31 4.03 4.06 4.13 4.49 1.49 5.12 3.30 3.40 . 4.29 5.00 3.70 5.67

Fe0 2.1

Mg0 1.89 0.65 0.85 0.66 0.78 0.66 0.73 1.15 0.74 0.58 0.78 0.90 0.55 0.91 1.06

Mn0 0.11 0.03 0.04 0.03 0.04 0.03 0.05 0.04 0.05 0.03 0.03 0.04 0.05 0.02 0.07

Ca0 4.59 1.33 1.42 1.37 1.66 1.39 0.67 0.63 0.41 0.92 0.41 2.04 0.35 0.59 0.15

Na20 7.96 8.76 8.95 9.56 9.44 9.49 7.96 9.13 7.94 9.13 8.82 9.46 7.98 8.59 7.93

K20 3.07 5.21 4.84 5.18 5.26 5.23 .4.89 5.00 5.46 5.15 5.01 5.34 5.65 5.55 5.29

P20s 0.60 0.02 0.10 0.12 0.16 0.11 0.05 0.34 0.08 0.24 0.07 0.26 .01 0.13 0.01

LOI 0.69 0.54 0.31 0.23 0.16 0.31 0.62 1.16 0.62 0.85 0.85 0.08 .85 0.47 0.31

CO2 0.5

TOTAL 99.2 98.8 98.7 98.5 98.5 98.7 98.7 98.1 99.6 98.9 99.2 100.1 100.5 99.7 99.4

ppm Rb 140 160 180 190 200 180 270 150 190 160 280 180 190 ' 120 220

Sr 340 580 620 630 790 650 '- 2070 1820 1100 1510 1550 680 780 2120 490

Zr 90 20 80 50 10 20 0 50 40 0 0 0

Y - 20 0 0 0

Nb - 30 ... . . :.

Ba 2360

Cr <20 <20 <20 <20 <20 <20 <20 50

+ Analysed by X-Ray Assay Laboratories, September 1982 * Analysed by X-Ray Assay Laboratories, August 1982 22

TABLE 1.3

CHEMICAL ANALYSES FROM THE 40 - 60% NEPHELINE PORTION

OF THE NEPHELINE SYENITE (UNIT 4d)

SAMPLE 4 04713* 04974* 04974* 04981* 04981* 04984** 04985** 04988** 04989**, 04990** 04995** 04996** 04997**` BODY 3 1 1 3 3 1 1 3 3 3 3 3 3

% Si02 52.5 53.0 54.0 51.2 51.2 56.7 53.2 51.0 51.2 '52.7 51.1 53.4 50.1 TiO2 0.44 0.47 0.36 0.43 .39 0.22 0.25 0.55 0.56 ' 0.29 0.41 0.19 0.54

A1203 21.5 23.4 23.3 24.5 24.6 21.3 24.8 20.4 21.4 ,24.4 24.6 24.2 - 21.2

Fe203 5.24 5.32 2.2 4.33 1.9 3.87 3.19 7.02 6.21 4.58 4.31 3.06• 7.02

Fe0 - 1.6 2.1

MgO 1.46 0.76 0.81 1.14 1.17 0.82 0.59 1.83 1.68 0.39 1.15 0.62 --- 1.98

Mn0 0.07 0.04 0.03 0.04 0.04 0.04 0.02 0.09 0.09 0.03 0.04 0.02 0.11

Ca0 2.31 0.47 0.71 0.55 0.71 1.63 0.43 3.47 2.66 0.48 0.53 0.38 3.60 Na20 8.96 10.0 10.1 10.7 10.8 9.44 10.7 8.45 8.89 10.5 10.4 10.5 9.03 K20 4.43 4.78 4.81 4.55 4.32 5.14 5.27 4.40 4.20 4.79 4.73 4.97 4.16 P205 0.36 0.04 0.05 0.22 0.29 0.20 0.02 0.47 0.42 0.03 0.16 0.03 0.52 LOI 0.70 0.54 0.93 0.54 1.16 0.00 0.77 0.39 0.70 0.70 0.62 0.93 0.30 CO2 0.6 0.3 -

TOTAL 98.3 99.2 98.9 98.4 98.7 99.5 99.4 98.3 98.2 99.0 98.3 98.3 98.9

ppm Rb 120 130 130 140 150 170 150 110 110 110 140 160 100

Sr 2450 1160 1290 1750 1800 870 1320 2110 2110 2110 1440 690 1970

Ir 10 20 50 40 0 0 0 0 .0 0 20

Y 0 10 0 160

Nb 20 20 30 -

8a 910 1760

Cr <20 50 40

* Analysed by X-Ray Assay Laboratories, September 1982

** Analysed by X-Ray Assay Laboratories, August 1982 23

TABLE I . 4

CHEMICAL ANALYSIS FROM THE >60% NEPHELINE PORTION

OF THE NEPHELINE SYENITE (UNIT 4e)

SAMPLE 04994 • BODY 3

% Si02 50.6

TiO2 0:23

A1203 25.4

Fe2O3 .3.32

Fe0

Mg0 0.64

Mn0 0.02

Ca0 1.19

Na20 11.3

K20 4.48

P205 0.03

LOI 1.00

Total 98.3 ppm

ppm Rb 120

Sr 1290

Zr 0

Analyses by X-Ray Assay Laboratories, Aug. 1982 24

TABLE I.5

CHEMICAL ANALYSES FROM IJOLITES

SAMPLE # 04979 04992 BODY 3 3

% Si02 45.2 45.9

TiO2 0.81 .62

A1 203 17.0 13.8

Fe203 11.8 • 9.88

Fe0

Mg0 4.39 9.80

Mn0 0.19 0.17

Ca0 6.58 8.13

Na20 7.70 4.79

K20 3.94 4.42

P205 0.41 0.02

LOI 0.39 0.85

ppm Rb 180 140

Sr 260 120

Y - 0

Zr 120

Analyses by X-Ray Assay Laboratories, August 1982

25

TABLE I.6

CHEMICAL ANALYSIS FROM A GRANITOID XENOLITH

WITHIN THE NEPHELINE SYENITE

SAMPLE # 04993 BODY 3

% Si02 55.5

Ti02 b.65

A1 203 19.2

Fe203 . 6.30

Fe0

Mg0 2.86

Mn0 0.11

Ca0 2.14

Na20 6.55

K20 4.17

P205 .21

LOI 1.47

TOTAL _ 99.4

ppm Rb 200

Sr 1170

Zr 200

Analysis by X-Ray Assay Laboratories, August 1982 26

TABLE I.7

CHEMICAL ANALYSES FROM THE PEGMATITES

ASSOCIATED WITH THE NEPHELINE SYENITE INTRUSIONS

SAMPLE # 04973+ 04998* 04999* BODY 1 2 2 UNIT 5b 5a 5a

% Si02 64.5 57.0 49.7

TiO2 0.30 0.63 .34

A1203 17.7 17.7 23.3

Fe203 3.28 10.4 6.82

Fe0 -

Mg0 0.68 0.63 1.46

Mn0 0.03 0.15 .07

Cao 0.57 1.42 6.50

Na20 7.48 6.95 _ 4.85

K20 5.11 3.74 3.61

P205 0.01 0.02 .22

LOI r 0.16 0.77 3.70

TOTAL 99.9 99.5 100.8

ppm Rb 170 - 140 180

Sr 190 710 1540

Y 0 0 60

+ Analysis by X-Ray Assay Laboratories, September 1982

* Analyses by X-Ray Assay Laboratories, August 1982 27 TABLE 1.8 DUPLICATE ANALYSES OF NEPHELINE SYENITE

Sample NF 04970

X Ray Sept. Barringer

% Si02 54.5 51.4 TiO2 .36 .367 A1 203 22.2 24.2 1.49 Fe203 4.10 Fe0 2.1 Mg0 1.15 .884 Mn0 .04 .0444 Ca0 .63 .80 Na20 9.13 12.8• K20 5.00 4.45 P205 .34 .35 LOI 1.16 ,.97 CO2 .5

Total 98.1 100.37

ppm Be .9 Cd <7 Cr 50 25.8 Co 22 Cu 5.9 Pb <5 Ni 9 Nb 30 Ba 2360 1560 Rb 150 Sr 1820 1490 Th 15 Zr 50 28 V 30.7 Y 20 Zn 43 28

TABLE I.9 DUPLICATE ANALYSES OF NEPHELINE SYENITE

Sample NF 04974

X Ray, Sept. X Ray, Aug. •Barringer

% Si02 53.0 54.0 55.9 TiO2 .47 .36 .337 A1 203 23.4 23.3 23.7 Fe203 5.32 2.2 3.29 Fe0 1.6 Mg0 .76 .81 .536 Mn0 .04 .03 .0356 CaO .47 .71 .88 Na20 10.0 10.1 12.1 K20 4.78 4.81 5.14 P205 .04 .05 .08 LOI .54 .93 .66 CO2 .06

Total 99.2 98.9 102.66

ppm Be .7 Cd <7 Cr 50 21.3 Co 22 Cu 3.3 Pb <5 Ni 8 Nb 20 Ba 910 944 Rb 130 130 Sr 1160 ". }290 1020 Th 16 Zr 20 18 V 30 Y 10 Zn 27 TABLE I.10 29

DUPLICATE ANALYSES OF NEPHELINE SYENITE

Samele NF 04981

X Ray, Sept. Barringer

% Si02 51.2 54.1 1102 .39 .314 A1203 24.6 22.4 Fe203 1.9 3.04 Fe0 2.1 Mg0 1.17 .791 Mn0 .04 .0465 Ca0 .71 .72 Na20 10.8 9.33 K20 4.32 5.01 P205 .29 .41 LOI 1.16 :89 CO2 .3

Total 98.7 97.05

ppm Be .3 Cd <7 Cr 40 18.1 Co , 22 Cu 2.2 Pb <5 Ni 8 Nb 30 Ba 1760 2340 Rb 150 Sr 1800 1580 Th 23 Zr 50 13 V 22.4 Y 160 Zn 44 30

APPENDIX 2

MODAL ANALYSES

Point counted modes made on stained slabs or thin section MINERALOGICAL MODES

SAMPLE 04987 04708 04709 04710 04721 04970 04971 04975 04976 UNIT 4b 4c 4c 4c 4c 4c 4c 4c 4c

% Quartz

Microcline 64 Pertite 45 45 58 69 78 79 70 47 Plagioclase 3 <1 11 6 Nepheline 46 33 5 17 12 26 18 21 28

Pyroxene <1 15 30 3 2 Amphibole

Biotite 5 2 4 - 11 3 8 <1 2 16

Mag/Ilmen <1 4 Tr 1 1 Tr 2 1 1z Apatite 1 1 2 Tr

Alteration Phases 3 1 Tr 2 5 12 Sphene Tr ♦ Table cont.

04983 04986 04991 04974 04981 04984 04985 04988 04989 UNIT 4c 4c 4c 4d 4d 4d 4d 4d 4d

Q

M 89

Pe 70 68 40 54 56 55 41 51 P1 4 3

Np 18 22 3 53 32 36 41 34 36 Px <1 7 12 5 Am

Bio 6 6 5 3 8 2 9 6 M/1 3 2 3 Tr 1 2 <1

Ap 1 1 1 Alt 2 2 1 3 Sp Table Cont.

04990 04995 04996 04997 04994 04979 04992 UNIT 4d 4d 4d 4d 4e Urtite Urtite

4

M 2

Pe 41 40 26 43 30

Pl 9 10 4 Tr

Np 44 50 58 30 56 49 32

Px 17 33 42 w

Am

Bio 1 11 , 2 7 4 14 26 Tr M/1 21 Tr 1 12 11 z

Ap 11 1

Alt 1 1 3 4

Sp