RPT ON GEOL MAPPING/VLF-EM SUR/MAG SUR ON WEST …

22
31C12SEM49 2.10682 MARMORA 010 RECEIVED nrc 24 1987 MINING IANOS SECTKJi MgflT MALQMB CLAIMfl MARMORA TOWNSHIP EASTERN ONTARIO REPORT ON GEOLOGICAL MAPPING VLF-ELECTROMAGNETIC SURVEY AND MAGNETIC SURVEY - by - C. R. Bowdidqe, M.A., Ph.D. December 1987

Transcript of RPT ON GEOL MAPPING/VLF-EM SUR/MAG SUR ON WEST …

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31C12SEM49 2.10682 MARMORA 010

RECEIVEDnrc 24 1987

MINING IANOS SECTKJi

MgflT MALQMB CLAIMfl

MARMORA TOWNSHIP

EASTERN ONTARIO

REPORT ON GEOLOGICAL MAPPING

VLF-ELECTROMAGNETIC SURVEY

AND MAGNETIC SURVEY

- by -

C. R. Bowdidqe, M.A., Ph.D.

December 1987

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During the summer of 1987, the Malone West property was subject to a

preliminary exploration programme of line cutting, geological mapping, and

geophysical surveying with VLF-EM and magnetometer. This report briefly

describes the results of the survey work, and outlines the geology and mineral

deposits of the region. The potential for gold mineralization is discussed.

PROPERTY t LOCATION AMD ACCttflB, TQPQQRXPHY

The property consists of 10 unpatented mining claims, with a nominal area of

50 acres each, for a total of 500 acres, in lots 13 to 15 of concessions VIII

and IX of Marmora Township. Claim details are as follows:

Claim no. Fraction Lot Concession

EO 898502EO 898503EO 960094EO 960095EO 960096EO 960097EO 960098EO 960099EO 960100EO 960101

NE/ 4SE/ 4NV/4SW/4NE 7 4SE/ 4ME/4SE/ 4SV/4NV/4

15151515151514141313

IXIXIXIX

VIIIVIIIVIIIVIIIVIIIVIII

The claims are located approximately 200 km by road north-east of Toronto, and

about 5 km north of Highway 7. Access to the property from Highway 7 is by

Hastings County road 11, through the village of Deloro, and towards Malone. A

track running west from the road, about BOO metres south of Malone, leads

along the northern boundary of the claims. An abandoned C.N.R. track crosses

the western part of the property. This road-bed can be used by automobiles in

the summer. It is entered at a road crossing l km north of Malone.

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Scale 1:63,360 After Wilson (1940)

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2

the summer. It is entered at a road crossing l km north of Malone.

The entire property is covered with bush, and the topography is irregular,

with numerous knolls up to 20 metres in height. Much of the lower ground

consists of swamp, and there are several beaver ponds. Some areas appear to

have been logged in the past, and are now covered with young plantations of

white pine.

HT8TQBV AMP BBlVIQUfl MQBK

The history of the Deloro gold mining camp has been reviewed by the writer in

an earlier report (Malone Gold Prospect, Marmora Township, Report on Geolog

ical Mapping, VLF-Electromagnetic Survey, and Magnetic Survey, February 1987),

and will not be repeated here.

There is no record of previous work on the present property in the literature.

Nonetheless, there is ample evidence of prospecting in earlier years, with

several trenches in the western part of the property, which were located on or

close to picket lines. No doubt more could be found by diligent searching.

There is no evidence of gold mineralization, however, and it is assumed that

the trenches date from the last century, when it was normal for trenches to be

opened on quartz veins, without the support of gold assays.

qgQLQOY

The property lies within the Grenville structural province of the Canadian

Shield. The area is underlain by highly metamorphosed metasediments, with a

wide variety of intrusive lithologies. The eastern part of the property is

underlain mainly by felsic intrusive rocks of the Malone Pluton, an

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3

Irregularly shaped body about 4 km long by 2 km wide. It Is believed to be a

satellitic intrusion to the Deloro Pluton, a circular mass of granite and

syenite 12 km in diameter (see figure 3). The strike of the meta&edintents

around the Deloro Pluton is almost always parallel to the intrusive contact.

The dominant type of metasediment in the area is an impure marble.

The property was mapped on a grid of picket lines laid out at 100 metre line

spacing. Traverses were made along the lines, with side excursions where

there were obvious outcrops off the lines. Exposure is generally so good that

it was not considered necessary to map every outcrop.

Calcareous Metasediments are grey to brownish on a weathered surface, and vary

from massive to locally well-bedded. The grain size is almost always coarse.

Some varieties are iron-rich and have a distinctly rusty appearance on a

weathered surface. The principal impurities in the carbonate rocks are

argillitic seams and diopside-rich bands.

Siliceous Metasediments are impure feldspathic quartzites, often almost

massive in appearance, and are seldom well-bedded. They are typically fine

grained. In some outcrops, these siliceous rocks are interbedded with the

calcareous meta-sediments.

Felsic Intrusive Rocks of the Malone Pluton are extremely heterogeneous. They

appear to be mainly of syenitic composition, with local development of quartz-

rich phases. The colour varies from grey to pink, and the grain size varies

from coarse to extremely fine, often over short distances. The finer-grained

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varieties are often porphyritic. In a general way, It appears that the coarse

varieties predominate in the eastern part of the property. Certainly, on the

adjoining property to the east (the Malone Claims), all the felsic intrusive

exposures consist of coarse-grained syenite.

Mafic Intrusive Rocks of the Malone Pluton vary from gabbro to diorite. They

are usually medium- to coarse-grained, dark grey to black, massive rocks. In

places they are sheared to a schistose amphibolite. In some areas, they have

been subject to an intense carbonate alteration, but without loss of the

original structure or texture in outcrop.

As mentioned above, the east half of the property is underlain mainly by

intrusives of the Malone Pluton, and the west half by metasediments. The

contact between the two is irregular in detail. The strike of the

metasediments is fairly consistently north-south, but the dip may be either

steeply to the east or steeply to the west. There are two major bands of

siliceous metasediment in the western part of the property, the remainder of

the area being underlain by the calcareous metasediments.

MIMBRALIZATIQM

Very little mineralization was observed in outcrop. The metasediments, and

particularly the siliceous metasediments, contain numerous veins of white

quartz, up to 2 metres wide, but there is no visible sulphide mineralization

in any that were noted during the mapping. No quartz veins of any size were

seen, that had not been trenched in earlier years.

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At 775W on line O, there is a small amount of disseminated magnetite and

pyrite in the marble. Its proximity to the intrusive suggests a skarn-type

origin.

Between 500W and 550W, lines 600N to SOON, the fine-grained microsyenite which

predominates in the area is intensely fractured, and carries minor amounts of

disseminated magnetite and local traces of pyrite.

MAGNETIC SURVEY

The magnetic survey was carried out using a Geometrics G-836 "Unimag" proton

precession magnetometer. Th'is instrument measures the total field strength

with an accuracy of ilO gammas. Readings were taken at 12.5 metre intervals

throughout, and more closely in anomalous areas. Diurnal corrections were

effected by reading the base line twice at the beginning of the survey, and

establishing values for each base line station. Cross lines were then

corrected by adjusting readings to bring the base line values to the

previously established levels.

The Halone Pluton does not have a distinctive magnetic pattern. There is

generally very little magnetic relief, but there are local irregular positive

anomalies up to 600-700 gammas. These do not correspond to mappable units,

and are presumed to reflect local traces of magnetite. The mafic intrusive

units do not stand out on the magnetic survey.

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The calcareous metasediments show an almost flat magnetic pattern, with a few

irregular positive anomalies, possibly related to local development of skarn-

type magnetite. The eastern band of siliceous metasediment shows as a

distinct magnetic high, with an amplitude of a few hundred gammas.

VLF-gLgCTRQMAQNBTIC SURVEY

The VLF survey was carried out using a Geonics EM-16 VLF receiver, tuned to

transmitter NSS (Annapolis, Maryland, 21.4 KHz). Measurements of in-phase

slope and quadrature were taken at 12.5 metre intervals throughout. The

results are presented on three maps. ' The first shows the field readings, the

second shows profiles of in-phase and quadrature, and the third shows Fraser-

filtered in-phase data with contours.

The VLF survey data shows numerous conductive zones. They are not discussed

in detail, because in virtually every case they appear to be related to topo

graphic lows, and probably result from conductive overburden features.

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eonetugioiig AMP

The geological environment of the property is favourable for gold

mineralization related to felsic intrusives peripheral to the Deloro Pluton.

However, no significant sulphide mineralization was found during the

geological mapping. If gold mineralization is to be found on the claims, it

will be best located by detailed prospecting, both within the Malone Pluton,

and in the metasediments close to the intrusive contact.

Respectfully submitted,

C. R. Bowdidge, M.A., Ph.D.

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Ministry ofu^X

r— O ILO^-GX H.t-.S.

Ontario*h©rn Min*

Report of Work 4. o-i ,Development "ir O l~ .

4ines (Geophysical, Geological,Geochemical and Expenditures)

Miniri'31C12SE&049 2.10682 MARMORA 900

Type o* S urvey(s)

(r&OL ce-tftft- j Vt-F-Claim Holder(s)

Township or Area

7 Prospector's Licence NoT

Adoress

Survey Company* j }; 0UT.J US K S M 4-

Date of Survey (from 4 to) "(Total Miles of line Cut

Name and Address of Author (of Geo-Tecnnical report)

SwTc ff.l"5 - t/O ffCffMOA/d S TT O/ST. //O/

Credits Requested per Each Claim in Columns at right Mining Claims Traversed (List in numerical sequence)Special Provisions

For first survey:Enter 40 days. (This includes line cutting)

For each additional survey: using the same grid:

Enter 20 days (for each)

Man Days

Complete reverse side and enter total(s) here

Credits

Note: Special provisionscredits do not apply to Airborne Surveys.

- Electromagnetic

- Magnetometer

- Radiometric

- Other

Geological

Geochemical

Expenditures (excludes!

Date

Certification Verifying Report of Work

Total number of mining claims covered by this report of work.

Electromagnetic

Magnetometer

Radiometric

Type of Work Performed

Performed on Claim(s)n HiO 7

.MINING LANDS SECTIONCalc ulation of Expenditure Days Credits

Total Expenditures

s. * -H 15

cTotal

)ays Credits

Inductions Total Days Credits may be apportioned at the claim holder's choice. Enter number of days credits per claim selected In columns at right.

RecorejedHplder or Agent (Signature)

I hereby certify that l have a personal and intimate knowledge of the facts set forth in thrHeport of Work annexed hereto, having performed the work or witnessed same during and/or after its completion and the annexed report is true.

Name and Postal Address of Person Certifying

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Ministry ofNorthern Developmentand Mines

Geophyslcal-Geological-Geochemical Technical Data Statement

ntario

TO BE ATTACHED AS AN APPENDIX TO TECHNICAL REPORTFACTS SHOWN HERE NEED NOT BE REPEATED IN REPORT

TECHNICAL REPORT MUST CONTAIN INTERPRETATION, CONCLUSIONS ETC.

Type of

Township or Area

Claim Holder( s)

Survey Company

Author of Report

Address of Anthnr t/f

"P /2H?e~1~

Covering Dates of Survey.

Total Miles of Line Cut_

^-^ ^^---^ (Unecutting to office)

SPECIAL PROVISIONS CREDITS REQUESTED

ENTER 40 days (includes line cutting) for first survey.

ENTER 20 days for each additional survey using same grid.

Geophysical

Electromagnetic.

DAYS per claim

2.02,0

-Other-

Geological.

AIRBORNE CREDITS (Special proviiion crediu do not apply to airborne lurveyi)

Magnetometer. .Electromagnetic. . Radiometric

HATE- 20

(enter dayi per claim)

sir.N ATT TP y.Author of Report or Agent

Res. Geol.. .Qualifications.

Previous Surveys File No. Type Date Claim Holder

MINING CLAIMS TRAVERSED List numerically

? o(Prefix) (number)

S•••••••••••••••••••i

9 too 96

TOTAL CLAIMS.

837 (85/12)

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GEOPHYSICAL TECHNICAL DATA

GROUND SURVEYS — If more than one survey, specify data for each type of survey

Number of Stations Station interval Profile scale—-^

Contour interval.

.Number of Readings — JLine spacing f O&

CJ

z o

InstrumentAccuracy - Scale constant Diurnal correction method

/O fc/) M rt rf 5"

Mf

Base Station check-in interval (hours). Base Station location and value —^

O

2;Ssi

InstrumentCoil configuration Coil separation ^— Accuracy -JL l

Method:Frequency.

CH Fixed transmitter d Shoot back D In line EH Parallel line

(specify V.L.F. nation)

Parameters measured /V~ft ft/tte'

b2 o

Instrument.Scale constant,

Corrections made.

Base station value and location.

Elevation accuracy.

ZCH

Q u. U

g00

Instrument ————————— Method D Time Domain

Parameters — On time . - Off time

l l Frequency Domain

_ Frequency _____ _ Range -^^—^^—

— Delay time ^——— Integration time.

Power.Electrode array — Electrode spacing .

Type of electrode ,

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SELF POTENTIALInstrument————————————————————————————————————————— Range.Survey Method ———————————————————————————————————————————

Corrections made.

RADIOMETRICInstrument.Values measured.

Energy windows (levels) ^—————^-^——^-^^^——^-—————————-.^—.^—Height of instrument____________________________Background Count. Size of detector^^^^^^^^^^^^———————————.^-———^^—————————.Overburden ^^^^^^^^^^—^^^^————————————————-—^-^^—.—-—.

(type, depth - include outcrop map)

OTHERS (SEISMIC, DRILL WELL LOGGING ETC.) Type of survey———————————————————————Instrument ——^^—^^—^^—^^^——^———^^—

Accuracy——————————————————————————Parameters measured.

Additional information (for understanding results).

AIRBORNE SURVEYS Type of survey(s)————

Instrument(s) ——————(specify for each type of survey)

Accuracy——————————————^(specify for each type of survey)

Aircraft used ^^^^-^^^——^^^^^^———————————————.

Sensor altitude.Navigation and flight path recovery method.

Aircraft altitude_______________________________Line Sparing Miles flown over total area__________________________Over claims only.

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GEOCHEMICAL SURVEY - PROCEDURE RECORD

Numbers of claims from which samples taken.

Total Number of Samples. Type of Sample.

(Nature of Material)

Average Sample Weight——————— Method of Collection————————

Soil Horizon Sampled. Horizon Development. Sample Depth————Terrain^———^——

Drainage Development.Estimated Range of Overburden Thickness.

Mesh size of fraction used for analysis.

ANALYTICAL METHODSValues expressed in: per cent

p. p. m. p. p. b.

D D D

Cu, Pb,

Others—

Zn, Ni, Co, Ag, Mo, As,-(circle)

Field Analysis (.Extraction Method. Analytical Method. Reagents Used——

Field Laboratory AnalysisNo. ___________

SAMPLE PREPARATION(Includes drying, screening, crushing, ashing)

Extraction Method. Analytical Method - Reagents Used ——,

Commercial Laboratory (- Name of Laboratory— Extraction Method—— Analytical Method —— Reagents Used ————

.tests)

.tests)

-tests)

GeneraL General.

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XI

RAWDON TOWNSHIP31C12SE0049 2.10682 MARMORA

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LEGENDHIGHWAY AND ROUTE No.OTHER ROADS sTRAILS " " \ -.' ' -—SURVEYED LINES/- L ——

TOWNSHIPS, BASE LINES, ETC. ' ' —LOTS. MINING CLAIMS. PARCELS, ETC.-

UNSURVEYED LINES: - \ . ' ,LOT LINES ' " " —

' PARCEL BOUNDARY —MINING CLAIMS ETC. ; —

RAILWAY AND RIGHT OF WAY -*- UTILITY LINES - - - - - NON-PERENNIAL STREAM

FLOODING OR FLOODING RIGHTS SUBDIVISION OR COMPOSITE PLAN WV//////^///^,

RESERVATIONS ORIGINAL SHORELINE MARSH OR MUSKEG MINES TRAVERSE MONUMENT

DISPOSITION DF CROWN LANDS

TYPE QF DOCUMENT SYMBOI

PATE NT. SUR f ACE ft M INING RIGHTS--____..-.-.4*5

, SURFACE RIGHTS ONLY....----___-..^ " . MINING RIGHTS ONLY .._...____.....^

LEASE SURFACE S, MINING RIGHTS.-...———.. jD" .SURFACE RIGHTS OWL Y........................

" , MIMING RIGHTS ONLY-.__,.__.___ .......^

LICENCE OF OCCUPATION ...,....-._-,.-......Lo-ORDER-1NCOUNCIL ...,~-.™......-........--......_

RESERVATION ___.....^_.^.........^__l.......^CANCtLi-EO .__....___.....,.___.-.....-.-^,.SAND S GRAVEL ___ ...^ ___'

(X

eNOTE: MINING BIGHTS IN PARCELS PATFNTED THIOH TO M AY*

1913. VESTED (N ORIGINAL PATENTEE BV THE PUBLK LANDS ACT. R SO 19 TO, CHAP. 390. SEC. 63, SUBS Ft l

SCALE: 1 INCH ^ 40 CHAINS

0 1003 7000 f)OO 6000 BMC

1000 41 KM)

7DOO 13 K Wl

AREAS WITHDRAWN FROM DISPOSITION

M.H.O.-MINING RIGHTS ONLY

S-R.O. - SURFACE RIGHTS ONLY ' J

M.+ S. - MINING AND SURFACE RIGHTS

DocritrfitMi O rdvNn. D*U D r^ioiJtkjn Tilt

StC. ^ 6/BD W l f B l JT/^/01 VrP.Q. I475CO

SIC. 16/60 Wl/ il Mf/t/B! H ft O. I*T9SO

HE*. F O" PUBLIC USt S.H.O. 3 7S46

SAND ond GRAVELMAHBLE Tilt IOBS9O

TOWNSHIP

MARMORAM.N.R. ADMINISTRATIVE DISTRICT

TWEEDMINING DIVISION

'SOUTHERN ONTARIO^LAND TITLES/ REGISTRY DIVISION

HASTINGS

Ministryof Ministry cfNatural Northern DevelcpmertResources and Mines

Ontario

SEPTEMBER 1986

G-1270

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