The Leon Project Sonora, Mexico Investors Presentation July, 2010 - - PowerPoint PPT Presentation

The Leon Project

Sonora, Mexico

Investor’s Presentation July, 2010

Leon Project Location

Leon Project - 2007-08 Drill Targets and SE extension

Mo Soil Anomalies – Leon Target Areas

Cu Soil Anomalies – Leon Target Areas

Diamond Drill Core from the Azul Zone

Diamond Drill Core from the Fortuna Zone

Azul Zone – Drill Section AZ2-AZ2’ - LEDH 17/18

With Mo and Re Assays

Azul North Zone – Drill Section AZ1-AZ1’ - LEDH

15-18 With Mo Assays

Azul North Zone – Drill Section AZ1–AZ1’ - LEDH

15-18 With Cu Assays

Fortuna Zone – Drill Section FO1-FO1’ - LEDH 19

with Mo and Cu Assays

Porphyritic rhyolite with Mo-Cu quartz “stockwork” mineralization in lower plate of the Leon Detachment

Occurrence of Copper in Tertiary granite host

Quartz vein with Molybdenite in granodiorite host

Leon Project – Molybdenum Mineralization in Proximity to El Creston Deposit

Leon Project – Sericite Alteration in Relation to El Creston Deposit

Model for Alteration and Mineralization Zonation Near an Upright, Un-faulted Porphyry Deposit:

(modified from Lowell and Guilbert, 1970)

Middle-Tertiary Extension: Displacement of Porphyry

Ore Bodies along low-angle normal “Detachment” faults

El Creston Molybdenum Deposit: Porphyry Molybdenum Ore Body

Leon Molybdenum Discovery:

The Leon- Creston Connection

Lowell and Guilbert, 1970: The Classic San Manuel-Kalamazoo Connection

Middle-Tertiary Extension, Dismemberment and Rotation of Crustal Blocks: Example from the Yerington Mining District, Nevada

(Modified from John Proffett, 1977)

Geologic Cross-Section Through Leon Molybdenum Mineralization and Soil Anomaly (> 40 ppm Mo) to El Creston Molybdenum Deposit

Sequential Cross- Section Reconstruction Showing Connection Between Leon Property Mineralization and El Creston Molybdenum Deposit at 54 Ma

Ground Magnetic Survey Results Reveal Many Kilometers of Untested Targets

• Azul and Fortuna drill holes with ore-grade Molybdenum tapped medium intensity

magnetic anomalies (yellow and light orange colors above)

• Several similar ENE trending magnetic anomalies coinciding with surface Mo

mineralization have yet to be tested

• See additional details in June 23, 2010 News Release: www.colibriresource.com

Leon Project Summary

• Leon claim package covers greater than 6,000 hectares and

encompasses a large porphyry system that includes high grade lead-zinc-

silver-gold mine workings and molybdenum-copper mineralization

• Structural reconstructions suggest that Leon Property contains most of

the El Creston porphyry system, displaced along post-mineral

detachment faults

• Phase 1 diamond core drilling has demonstrated high grade, near surface

molybdenum mineralization including 72 meters of 0.195% Mo within a 211 meter interval of 0.082% Mo (LEDH-18), plus wide intervals of copper-molybdenum-rhenium mineralization (290.2 m @ 0.047% Cu, 0.025% Mo in LEDH-15; 59 to 2530 ppb Re in LEDH- 16, 17 and

18)

• DRI LL RESULTS ARE HI GHER GRADE AND NEARER SURFACE THAN

THE EL CRESTON OREBODY WHI CH HAS POSI TI VE BANKABLE FEASI BI LI TY PLANNI NG

Exploration Plan

• Expand drilling along Azul Zone structures with
• utstanding prior drill results. 5-10 holes to test

down-dip and along-strike extent.

• Test porphyry moly-copper targets identified by

coincident soil, rock chip and magnetic anomalies in Tinaja Zone.

• Test precious metal bearing structures with

coincident soil-rock chip and magnetic signature.