Introduction

Zymo is a 10,660 hectare property that lies approximately 40 kilometres west of the town of Smithers, in northwestern British Columbia. The geology and mineralization styles at the Zymo property indicate both copper-gold-silver porphyry and porphyry related high sulphidation gold-silver-zinc replacement deposits.

The Zymo property hosts at least two large copper-gold porphyry, intrusion-related, mineralized zones known as the Hobbes zone and the FM zone. A third area of interest called the URC zone remains untested.

In 2008, 6 holes were drilled on the Hobbes Zone and this was followed up with three more holes in 2009. All of the holes intersected significant intervals of copper-gold mineralization with the best interval being 72.0 metres grading 0.72% copper and 0.54 g/t gold starting at 15.0 m in hole ZY-08-09. The Hobbes zone now measures over 600 m in an east-west direction and remains open-ended.

Status

Eastfield Resources owns a 100% interest in Zymo subject to a June 2005 agreement with a private company. Under the terms of the agreement, Eastfield is required to issue 600,000 shares and pay $250,000 in cash before June 5, 2012. Remaining to be paid are 300,000 shares and $210,000 in cash which includes 100,000 shares and $40,000 in cash on or before June 5, 2010. A 3% net smelter royalty is reserved for the vendors of which 1.5%, pertaining to copper production, may be purchased for $1,500,000.

History

The first noted discovery of mineralization in the Zymo Ridge area was by Corona Corporation in 1987 while following up a government regional geochemical survey gold anomaly on Red Canyon Creek. They noted anomalous gold values in a quartz-sericite-pyrite altered intrusion. Small programs in 1990-1 and 1996-7-8 were largely geochemical sampling programs including stream sediment, rock sampling, and the emplacement of a soil grid.

In 1999 Freeport Copper Company (Freeport-McMoRan) optioned the property. Freeport drilled six core holes in the FM Zone, confirming the presence of a potentially large porphyry system and the drilling suggested they were in the flanking zone of phyllic alteration.

An 823 line-kilometre airborne geophysical survey was completed in December 2004 by NDT Ventures Ltd.

Eastfield optioned the Zymo property in mid 2007 and carried out a reconnaissance exploration programme from September 20 to October 10, 2007. The programme was designed to look at known areas of mineralization to understand the geology, mineralization and alteration of the area of the previous work, and to assess the economic potential of the rest of the property. The Hobbes Zone was discovered at this time.

In early 2008, Eastfield optioned the property to NGEx Resources Inc., formerly Canadian Gold Hunter Corp., who funded the 2008 and 2009 programs. In April 2010, NGEx withdrew from the Zymo project.

Geology

The Zymo property is located within the Stikine Terrane at the southern edge of the Bowser Basin. This area is largely underlain by clastic sedimentary rocks of the Skeena (early Cretaceous), Bowser (middle-late Jurassic) and Hazelton (early Jurassic) Groups, with Hazelton volcanic rocks mapped to the southeast of the claims. These rocks have been intruded by granite and diorite of the Eocene Nanika and late Cretaceous Bulkley Intrusive suites.

Strong west-northwest to northwesterly trends are reflected in several elements and may describe regional structures. Red Canyon and Mulwain Creeks display parallel northwesterly trends which are also very evident in the airborne magnetic survey in their vicinity. Linear resistivity features can be seen to display northwesterly trends that often parallel or coincide with magnetic features. The contact of the Bowser and Hazelton Groups forms a west-northwesterly linear in the extreme southern part of the property.

The property is composed of various formations of fine to coarse clastic sediments which host numerous intrusions of dioritic rocks. The intrusions are often porphyritic and range from dykes to bodies over one square kilometre. Local exposures of intermediate volcanics have been noted within the sedimentary package.

The alteration pattern around the mineralization runs from widespread iron carbonate alteration in the sediments around the various intrusions with strong sericite-pyrite alteration occurring in the intrusive rocks and in the surrounding sediments. The zones of mineralization are strongly altered with silicification, both as flooding and veins, k-feldspar, chlorite and magnetite alteration. The sediments in the Hobbes area have been strongly hornfelsed with biotite and chlorite.

Geophysical work in 2008 revealed an extensive chargeability anomaly that is over 6.0 km long and up to 2.0 km wide and which is open to the northwest. The two known areas of mineralization occur on the north edge of this anomaly.

Mineralization

The Zymo property is host to two significant known occurrences of calc-alkaline copper-gold porphyry mineralization. The Hobbes Zone consists of disseminated and stockwork chalcopyrite in strongly silica-magnetite flooded diorite porphyry dykes and the adjacent sediments. It was discovered in 2007. Drilling in this zone returned intercepts as high as 0.72% Cu and 0.54g/t Au over 72.0 m in hole ZY-08-09. The mineralized zone is surrounded by large halo of strong sericite-pyrite alteration and hornfels in sediments and dykes. This zone is associated with a strong magnetic-resistivity high in the north side of the main chargeability anomaly, and also has a strong Cu-Au-Mo geochemical signature.

The FM Zone is located 4.5 km northeast of Hobbes, and is composed of a 1.0 km x 1.5 km sericite-pyrite altered intrusion. Chalcopyrite and local bornite occur in number of structurally controlled silicified zones within this. Freeport-McMoran drilled six holes here in 1999 and encountered long intercepts of anomalous copper-gold mineralization, though none of these holes were close to any of the known surface showings. This area has a marked Cu-Au geochemical signature. The 2008 surface programme has discovered other areas on the property with similar geochemistry.

Auriferous base metal sulfide veins occur in a number of locations on eastern part of the property. These veins are as large as 1.0 m wide and 100 m long and have returned values of over 17g/t Au and over 300g/t Ag. The veins have been noted occurring proximal to the FM Zone intrusive, and also in another area to the southwest of this where they occur in an area of anomalous Zn-Pb-As-Sb, suggesting proximity to another mineralized intrusive.

Work in 2008

After an extensive IP survey over the Hobbes and FM Zones, a total of 1,554.5 metres was drilled in six holes on the Hobbes Zone. All of the holes intersected significant intervals of copper/gold mineralization with the best interval being 72.0 metres grading 0.72% copper and 0.54g/t gold starting at 15.0 metres in hole ZY-08-09. A summary of the drill results is as follows:

Hole ID

From (m)

To (m)

Core Length (m)

Cu %

Au g/t

ZY-08-7

3.05

252.98 eoh

249.93

0.20

0.14

including

116.0

182.0

66.00

0.33

0.20

ZY-08-8

3.05

237.74 eoh

234.69

0.20

0.12

including

51.00

111.0

60.0

0.39

0.26

ZY-08-9

3.05

256.02

252.97

0.32

0.23

including

3.05

162.0

158.95

0.44

0.32

including

15.0

87.0

72.0

0.72

0.54

ZY-08-10

3.05

162.00

158.95

0.31

0.21

including

18.00

75.00

57.00

0.43

0.32

ZY-08-11

6.10

153.00

146.90

0.16

0.10

ZY-08-12

51.00

150.00

99.00

0.11

0.05


(eoh = end of hole)

Work in 2009

Three holes (ZY-09-13, 15, 16) drilled at the Hobbes zone were each 100 m step-outs to the west and resulted in extending the zone which now measures over 600 m in an east-west direction and remains open-ended. Hole ZY-09-14 was a vertical hole drilled from the collar of ZY-08-09

Fill-in soil geochemical sampling was carried out on the URC target which lies 1.5 km west of the Hobbes zone and confirmed a 1.5 km long coincident copper-gold anomaly. This target is beyond the end of the geophysical grid and prospecting found no outcrops however a sample of mineralized float returned 0.33% copper and 0.22 g/t gold. This target further expands the discovery potential for the property.

A summary of the Hobbes drill results is as follows:

Hole ID

From (m)

To (m)

Core Length (m)

Cu %

Au g/t

ZY-09-13

3.00

428.00

425.00

0.15

0.09

including

255.0

381.0

126.00

0.20

0.15

ZY-09-14

3.00

276.00 eoh

273.00

0.23

0.15

including

9.00

108.0

99.0

0.36

0.25

including

33.00

93.0

60.0

0.44

0.30

ZY-09-15

33.00

441.00

408.00

0.21

0.11

including

87.00

153.00

66.00

0.33

0.20

including

297.00

318.0

21.0

0.31

0.18

ZY-09-16

30.00

369.00

339.00

0.23

0.13

including

139.00

330.00

171.00

0.31

0.18

including

201.00

279.0

78.0

0.41

0.26


A single hole, ZY-09-17 was drilled near the FM Zone (original Freeport 1999 target):

Hole ID

From (m)

To (m)

Core Length (m)

Cu %

Au g/t

ZY-09-17

9.00

42.00

33.00

0.13

0.11



Access

Zymo is accessible by good quality logging roads and is easily serviced from the community of Smithers.


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Overview and Maps
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Hobbes and URC
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Zymo Compilation
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Zymo Mag Map
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Photos


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Drilling ZY-08-07

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FM Showing

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Freeport Hole 5 Clearing

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Hobbes Creek

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Hobbes Zone Out crop

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Hole ZY-08-07

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Hole ZY-08-075m

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Hole ZY-08-08

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Slinging Drillin to Position

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Splitting and Inspecting Core

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Zy09 15 184.5m

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Zymo Ridge Pic With dhs 7 09
     
 

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