Sardine Hill

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SARDINE HILL -- (Option for Mulgravian Ventures Ltd. to earn 51% interest with Guyana Frontier retaining 49%)

Guyana Frontier's Sardine Hill Project consists of one Large Scale Prospecting Licence which covers an area of 4,219 hectares (10,427 acres) with excellent access being located approximately 90 kilometers from Georgetown, the capital of Guyana.

Definitive Agreement with Mulgravian Ventures Corporation

Pursuant to a joint venture agreement, Mulgravian Ventures has the option to acquire a 51% working interest in the Sardine Hill Property by making aggregate exploration expenditures and property acquisition payments on the property of US$3,000,000 over three Guyana Frontier through a private placement and mandatory exercise of warrants. Guyana Frontier operates exploration programs on behalf of Mulgravian and be entitled to a 10% management fee on all property Guyana Frontier the option to acquire all of the issued and outstanding shares of Mariwa Mining Company Inc. which holds a 100% interest in the Property.



General Geology of the Guiana Shield

The Guiana Shield is a nearly 2 billion year old geological formation in the northeastern portion of South America and is part of the northern Amazon Craton. It was once contiguous with the West African Craton until it split with the formation of the Atlantic Ocean during the Jurassic period around 150 million years ago. The Amazon Craton is an agglomeration of geological provinces based on the age of rocks, geophysical trends, proportion of lithologies and structural trends. The Proterozoic, greenstone portion of the Guiana Shield includes the Pastora - Sumpamo Terrane and consists of metasediment and metavolcanic rocks intruded by two generations of granitic rocks. It is covered by quasi-horizontal layers of shales, quartzites, sandstones and conglomerates intruded by sills of younger mafic intrusives such as gabbros. During the Trans-Amazonian Orogeny (about 2 billion years ago), shield rocks were deformed by faults trending in a northeast and northwest direction and intruded by mafic dikes creating mineralized zones. The upper 100 meters of the Guiana Shield has since been altered by tropical weathering into a soft, oxidized by-product called saprolite which is amenable to low cost mining and processing methods.

Work Completed by Previous Owners

Commencing in 1994 and continuing to 2002, International Roraima Gold Corporation ("Roraima") managed line cutting, geological mapping, soil and auger sampling, seven trenches over 407 meters, 16 mechanized auger holes with an aggregate depth of 214 meters, and nine diamond drill holes totalling 917.8 meters on the Property. The results from the exploration work predate National Instrument 43-101 Standards of Disclosure for Mineral Projects and are therefore provided for historical context only.

Roraima's work concentrated on a 2.5 km long, 250 meter wide north-south corridor of exposure within the Property, a window in an area generally covered by transported sands which mask soil geochemical responses. The soil and auger geochemical work delineated a north - south trending gold anomaly about 250 to 400 meters wide (east-west) and 2.2 km long (north-south) with some local fault offsets. This window enabled Roraima to define gold geochemical responses which coincided with the western fringe of a swarm of bedrock electromagnetic conductors delineated by 'Turam' surveys by Cominco Ltd. during the 1960's. These geophysical targets were generally untested by drilling or geochemical surveys, although the known gold targets were associated with the most westerly of these electromagnetic responses. The soil and hand auger holes mapped the Mariwa river anomaly which has been the focus of most of the work completed on the Property. The mineralized zones are weathered to saprolite to about 80 meters.

TRENCH RESULTS

The trenches completed in the mid-1990s total 407 meters but the results from the sampling are not available to the company. Trench 1 had a sampled width of 65 meters (approximate true width 50 meters) including 41 meters (35 meters true) with an average grade of 1.63 grams per tonne ("g/t") gold. Results from trenches 2 to 4c (five trenches) are not available. Results from Trench 5, 750 meters north of Trench 1, showed values of 1.08 g/t gold across 82 meters including 28 meters grading 1.16 g/t gold (approximate true widths).

Selected Drill Holes At Sardine Hill

Hole #

From (meters)

To (meters)

Interval (meters)

Au (g/t)

DDH-1

-

-

-

NSV

DDH-2

15.92

121.94

106.0

1.52

DDH-3A

20.98

85.38

64.6

1.04

DDH-3B

0.00

191.34

191.3

0.54

  Including

60.00

93.00

33.0

0.74

  Including

121.05

183.72

62.6

0.74

DDH-4

10.82

103.00

92.1

0.96

DDH-5

12.00

37.00

25.0

0.25

DDH-6

22.50

25.00

1.5

5.46

DDH-7

0.00

61.00

61.0

1.36

DDH-8

36.00

37.50

1.5

1.07

  Including

48.00

51.00

3.0

2.70



Newmont Overseas Exploration Company

In 1999 Newmont evaluated the Property and completed 11 diamond drill holes totalling 869 meters. Newmont drill holes were more widely distributed and were evidently placed to test exploration concepts rather than simple extensions to the gold mineralized zone. The results predate NI 43-101 and are therefore provided for historical context only. None of the drill holes tested the swarm of bedrock conductors east of the Mariwa River window and none of the Newmont drill holes tested the priority area which was the focus of the Roraima work.

Hole #

From (meters)

To (meters)

Interval (meters)

Au (g/t)

MSDH-1

48.0

54.0

6.0

1.49

MSDH-2

26.0

36.0

10.0

1.43

including

32.0

36.0

4.0

2.94

MSDH-3

14.0

76.0

62.0

0.71

including

20.0

30.0

10.0

2.00

MSDH-4

14.0

38.0

24.0

0.15

MSDH-5

40.0

48.0

8.0

0.47





David Bending, M.Sc., P.Geo., former President and CEO of Shoreham and a Qualified Person as defined in NI 43-101 reviewed all technical information contained in this description of the Property, derived from Shoreham's news release of June 8, 2010. On behalf of Mulgravian Ventures Corporation, Robert A. Lunceford, M.Sc., CPG, a Qualified Person as defined in NI 43-101, has also reviewed and approved all technical information contained in this description of the Property.

2011 DIAMOND DRILLING PROGRAM

On June 16, 2011, Guyana Frontier announced the results of a diamond drilling program at Sardine Hill. A total of 3,076 metres were drilled in 18 holes.

Known gold mineralization at Sardine Hill occurs in saprolite (deeply-weathered bedrock) that may be up to 150 metres thick on portions of the property. Thirteen of the eighteen drill holes intersected gold-bearing saprolite from surface, including:
  • DDH SH11-04 intersected 1.33 grams/tonne gold over 73.5 metres (estimated true width 53.66 metres);
  • DDH SH11-07 intersected 0.73 grams/tonne gold over 137.38 metres (estimated true width 101.38 metres);
  • DDH SH11-09 intersected 1.68 grams/tonne gold over 67.5 metres (estimated true width 49.28 metres);
  • Drill holes SH10-01 and SH11-02 confirmed the presence of gold mineralization 600 and 660 meters respectively north of the previously known gold mineralization.
Gold results from this drill program are presented in Table 1.



Diamond Drill at Sardine Hill


Table 1. Sardine Hill 2010-2011 Diamond Drilling Results

 

Drill Hole
Number

 

Final Depth
(m)

 

Planned
Bearing/
Inclination
(degrees)

 

From
(m)

 

To
(m)

 

Interval
(m)

 

Estimated
True Width
(m)

 

Gold Intercept
(grams/tonne)

SH10-01

79.5

90 /-50

4.30

30.0

25.7

14.91

0.37

 

 

 

53.5

58.5

5.0

2.90

0.98

SH11-02

207.0

90 /-50

32.8

41.5

8.7

5.05

0.30

 

 

 

49.0

52.0

3.0

1.74

0.38

SH11-03

197.0

90 /-50

0.0

47.78

47.78

34.88

0.97

SH11-04

177.0

90 /-50

0.0

75

73.5

53.66

1.33

 

 

 

79.5

97.5

18.0

13.14

1.09

SH11-05

223.0

90 /-50

0.0

16.5

16.5

12.05

0.74

SH11-06

187.5

90 /-50

4.5

10.5

6.0

4.38

0.43

 

 

 

19.5

27.0

7.5

5.48

1.14

 

 

 

34.5

81.0

46.5

33.95

1.10

 

 

 

84.0

111.55

27.55

21.11

0.45

 

 

 

117.0

125.75

8.75

6.39

0.18

 

 

 

134.07

138.5

4.43

3.23

0.22

SH11-07

164.2

90 /-50

0.0

138.88

137.38

101.38

0.73

SH11-08

165.0

90 /-50

6.0

37.50

31.50

23.0

0.87

 

 

 

48.0

54.0

6.0

4.38

0.82

 

 

 

58.2

121.5

63.3

46.21

0.76

 

 

 

126.0

132.0

6.0

4.38

0.73

 

 

 

135.0

143.5

8.5

6.21

0.46

SH11-09

136.5

90 /-50

0.0

67.5

67.5

49.28

1.68

SH11-10

210.0

90 /-50

0.0

21.0

21.0

15.33

0.72

 

 

 

25.25

52.5

27.24

19.89

1.34

 

 

 

55.35

62.6

7.25

5.29

0.72

 

 

 

78.0

85.6

7.6

5.55

0.21

 

 

 

89.45

91.77

2.32

1.69

0.30

SH11-11

93.0

90 /-50

0.0

9.0

9.0

6.57

0.72

 

 

 

19.5

93.0

73.5

53.66

1.12

SH11-12

157.0

90 /-50

0.0

7.5

7.5

5.48

0.89

 

 

 

19.5

109.5

90.0

65.70

1.14

SH11-13

189.0

90 /-50

0.0

67.5

67.5

49.28

1.15

SH11-14

183.0

90 /-50

0.0

17.0

17.0

12.41

0.61

 

 

 

19.6

40.5

20.9

15.26

0.33

SH11-15

177.0

90 /-50

0.0

24.3

24.3

17.74

0.89

SH11-16

181.0

90 /-50

39.0

55.5

16.5

12.05

0.60

 

 

 

60.0

64.8

4.8

3.50

1.12

 

 

 

72.0

166.5

94.5

68.99

0.56

SH11-17

186.0

90 /-50

0.0

8.0

8.0

5.84

0.32

 

 

 

16.5

49.0

32.5

23.73

0.81

 

 

 

52.0

94.34

42.34

30.91

0.78

SH11-18

163.5

90 /-50

0.0

37.5

37.5

27.38

1.43





Fourteen of the eighteen drill holes were collared along east--west sections at 50 metre intervals along 300 metres of strike length to confirm the grade and geometry of shallow portions of the historical gold-mineralized zone. The main target area of Guyana Frontier's 2010-2011 drill program was previously mapped by auger geochemistry, trenching and diamond drilling by International Roraima Exploration in 1995-1996, and by Newmont Overseas Exploration in 1999.

Two of the drill holes, SH11-05 and SH11-18, were drilled to define an interpreted structure which offsets the northern portion of the mineralized body as defined by historical work. Holes SH10-01 (lost at 79.5 meters) and SH11-02 confirmed the presence of gold mineralization 600 and 660 metres further north of the previously known mineralized body. Guyana Frontier intends to conduct further geological mapping, ground geophysics and drilling during future work programs to help evaluate the extensions of the mineralized zone.

The Sardine Hill drill holes intersected intensely weathered saprolite, showing pervasive chlorite, ankerite and sericite alteration assemblages, varying amounts of tourmaline in veining, widespread disseminated pyrite and lesser chalcopyrite in foliated and veined zones. None of the drill holes were extended to test the projected fresh bedrock portion of the mineralized zone.

Saprolitic weathering is viewed as a positive aspect of the Sardine Hill gold mineralization because the weathered rock is generally softer and the gold mineralogy is less complex than is commonly the case for unweathered bedrock.

General Criteria for Calculation of Mineralized Intercepts

Sample and assay intervals are based on drilled intervals with controlled start and end depths. The estimate of grade across width is based on the multiple of reported gold values and reported sample intervals. Core recoveries ranged from 100%, to less than 50% in short intervals, and all drilled intervals were treated equally in the weighted mean calculations. Poor core recovery may compromise or modify the gold assays by loss of gold in fines or concentration of gold in retained material. Sequences of samples with less than 0.15 grams of gold per tonne across more than three contiguous samples are not included in stated intercepts.

Analytical Methods

All drill samples were shipped directly to the independent preparation facility of Activation Laboratories Ltd. ("Activation") in Georgetown, Guyana ("ActLabs Guyana") for sample preparation. All gold fire assay determinations were conducted in Activations' Venezuelan facility while multi-element analyses and copper assays were completed at its Ancaster, Ontario headquarters.

At ActLabs Guyana, all drill samples were crushed to 90% passing -10 mesh (1.7 mm), then split to provide a 250 gram subsample which is pulverized to 95% passing 150 mesh (105 microns). A 50 gram split is subject to Fire Assay Preconcentration gravimetric analysis, with results reported in grams per tonne with a lower limit of 0.03 grams per tonne. A separate sub-sample, 0.25 grams of the pulp, is subject to four-acid digestion and analysis by ICP/OES (Optical Emission Spectroscopy) to provide analyses for 35 elements. Upon receipt of all analytical results from the 2010-2011 drilling program, a selected suite of gold bearing intercepts will be re-subsampled for supplemental analysis using screen fire metallics to evaluate possible "nugget effect" to determine if coarse gold is present in the samples.

An airborne magnetic, VLF (very low frequency) and radiometric survey was completed by Terraquest Ltd. in February, 2011 at Sardine Hill. A total of 649 line kilometres were flown. Guyana Frontier's technical team is working to integrate the airborne data with other geochemical and geological data in support of future drill target development.

The technical work disclosed in this document was planned, supervised and reviewed by David Bending, M.Sc., P.Geo., a Qualified Person as defined in National Instrument 43-101.  
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