Pediment Exploration Inc.
Pediment Exploration Inc.
Projects Baja
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Maps
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Las Colinas Drill Map
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LCDD 09 Cross Section

LCDD 11-12 Cross Section

Las Colinas IP Survey and Drill Map

Las Colinas IP Sections

Property Geology

Drilling & IP

Sample Locations

 

Project Description
The San Antonio (formerly Baja California Sur) project is located on the Baja Peninsula, adjacent to the historic mining town of San Antonio and 40 km southeast from the port city of La Paz. Good gravel roads traverse most of the project area and a high voltage power line crosses through it. The project consists of three concessions staked and 100% owned by Pediment that cover 40,200 ha (100,000 acres) and 14 km (about 9 miles) of favorable geological trend. In the late 1990s Echo Bay Minerals located and partly tested the Colinas gold resource that is contained by the company's staked ground.

District Background
There has been mining from two separate deposits types in the region. Vein mining of silver-base metals deposits has taken place along a northeast-southwest trend, and more limited load gold mining along a separate and younger north-south trend. The northerly extensions of these two mineralized trends are projected to intersect in a flat lying, pediment covered area within the company's holdings. This setting is a prime target for discovery of new deposits.

The company's primary exploration model is focused on locating bulk tonnage grade gold deposits that could be mined by open pit. During the late 1990s work by Echo Bay outlined the Paradones Amarillo deposit (owned by a third party) on the southern end of the known trend that has measured and indicated resources of 55 million tonnes grading 1.1 grams per tonne gold, and the Colinas deposit on the northern end of the known trend. These deposits are analogous to the gold mines of the Mojave-Sonora Megashear that include the 5 million ounce deposits at Mesquite in California and at La Herradura in northwest Sonora.

The "Megashear" and BCS models contain gold deposited in shallowly dipping thrust faults that have enhanced grades and thickness at flexures (bends) in the systems and where they are accompanied by high angle structures that likely acted as conduits for hydrothermal fluids that carried the gold into the deposit traps. The deposits generally have subtle and restricted alteration envelopes. Gold is associated with sulphide minerals that typically represent a minor portion of a deposit volume. Because of a highly fractured character and oxidation of the sulphide minerals near surface, the deposits tend to "weather down" and be hidden beneath overburden.

BCS Project
The BCS project contains Mesozoic aged quartz-diorite and gabbro bodies intruding older metamorphic rocks. The Mesozoic intrusives include "peraluminous" bodies that are typically associated with gold bearing fluids generation. Low angle fault complexes, that may include zones of cataclasite and mylonite, are a locus for gold deposition. The company is confirming past results of reverse circulation drill testing by Echo Bay, and is conducing geochemical and induced polarization surveys as well new geological mapping in order to locate new targets.

Las Colinas Deposit
This deposit located is located in Pediment's Cirio concession. It was outlined by Echo Bay (now Kinross Gold) in 1996-97 during a 31-hole reverse circulation drill program in this area. Using data from 16 drill holes and five trenches Echo Bay reported an estimate of 10.6 million tonnes @ 1.02 g/t gold (roughly 340,000 ounces). The estimate was compiled before and is not compliant with 43-101 reporting standards, is presented only as a historical reference, and should not be relied on. Drill testing by Pediment has confirmed its location. The Colinas mineralization is hosted by within shallow lying fault zones containing disseminated and veinlet sulphide minerals. The deposit can reach 20-40 meters in thickness and is concentrated where high angle faults have cut the lower angle fault zones.

North target area (Los Planes)
In addition to outlining the Colinas deposit, drill testing by Echo Bay intersected three significant drill intersections within a broad pattern of testing in an area north of Colinas. Historic reverse circulation drill results from this northern area included 16.5 metres @ 2.02 g/t gold, 15 metres @ 1.32 g/t gold, and 4.5 metres of 3.3 g/t gold (see map) in three of five holes testing a 400 x 200 metre area.

Current Exploration

In February 2007 Pediment initiated an extensive drill campaign, using two drill rigs for the program. Planned locations include a number of holes designed to cut across regional shear and fracture trends containing gold mineralization to extend gold zones laterally along strike and in folded repetitions of the shear. The drill program is designed to expand the historic Colinas gold resource and bring it to NI 43-101 reporting standards. Drilling will also outline the separate Colinas North zone where widely spaced past drilling intercepted up to 16 meters of 2 g/t gold as well a third, adjacent mineralized trend, Colinas East, where some of the best trench results reported from the project (99.6 metres @ 2.3 g/t gold (uncut) or 0.5 g/t (cut to 10 g/t)) are located. The area around these anomalies and mineralized trenches has never been drilled. The Colinas North, the East trench zone and extensions to Colinas itself have the potential to significantly increase the in situ gold resource at Colinas.

Initial results have been released and all holes were testing the eastern side of the resource area, returning intersections of 32.93 metres of 1.23 g/t gold, 25.1 metres of 1.09 g/t gold and 18.3 metres of 1.13 g/t gold:

Las Colinas Diamond Drilling 2007

Drill hole

From (m)

To (m)

Length (m)

Au g/t

LCDD-09

48.16

81.08

32.92

1.23

including

49.99

53.64

3.66

3.91

 

 

 

 

 

LCDD-11

32.8

57.9

25.1

1.09

including

33.5

39.6

6.1

2.35

and

76.2

85.3

9.1

0.90

and

150.9

158.5

7.6

1.20

 

 

 

 

 

LCDD-12

82.3

100.6

18.3

1.13

and

104.2

113.4

9.1

0.52

and

137.2

144.5

7.3

0.59

and

164.6

170.1

5.5

0.97

 

 

 

 

 

LCDD-13

21.95

38.71

16.76

0.47

including

31.39

38.71

7.32

0.73

and

43.28

44.93

1.65

1.47


Significantly holes 11 and 12 intersected several new zones at depth, parallel to the historic resource (see cross section map at the top). These new zones include intersections of 7.3 metres of 0.59 g/t gold and 5.5 metres of 0.97 g/t gold in hole LCDD-12 which bottomed in mineralization and 9.1 meters at 0.9 g/t gold and 7.6 meters at 1.2 g/t gold in hole LCDD-11. The new zones will require definition drilling but they are outside of the main mineralized zone and, therefore, represent additions to the historic resource.
Drilling continues one kilometre north of the historic resource to test a strong IP chargeability response, north of an area where Echo Bay intersected gold mineralization in widely scattered drill holes.



Click here for results of the trenching program, April 2006 Earlier in April 2006 Pediment completed a trench sampling program at the Las Colinas deposit area. Among the results, a high-grade sample of 3 meters grading 69.8 g/t in trench LCOT-22 was recovered from a section of weak quartz stockwork veining accompanied by biotite and limonite staining that is otherwise similar to adjacent material and is probably associated with the low angle structure dipping easterly rather than westerly as in the Colinas deposit.

Results by Trench

====================================================================
Trench Number      Width       Grades
====================================================================
LCOT-5         60 meters       60 meters @1.06 g/t gold,
                               Includes 18 m @ 2.28 g/t gold and,
                               Includes   6 m @ 5.18 g/t gold

LCOT-12        60 meters       60 meters @ 0.48 g/t gold,
                               Includes 9 m @ 1.67 g/t gold and,
                                             6 m @ 1.48 g/t gold

LCOT-19        30 meters       30 meters @ 0.42 g/t gold,
                               Includes 10 m @ 0.706 g/t gold

LCOT-22        99.6 meters     99.6 m @ 2.3 g/t (uncut) or
                               99.6 m @ 0.5 g/t (cut to 10 g/t),
                               Includes 9 m @ 1.3 g/t gold, and
                               3 m @ 69.8 g/t gold (uncut)
====================================================================

 
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Pediment Exploration Inc.