Lucapa Diamond — Lonrho Mining — Investor Presentation (2010)
29 slides from Lucapa Diamond's investor presentation, 2010
Slide 1: A Diamond Explorer with World Class Potential
A Diamond Explorer with World Class Potential 2010
Slide 2: Lonrho Mining Limited
LONRHO MINING LIMITED (ACN 111 501 663) 12 Walker Avenue ǀ West Perth WA 6005 ǀ Tel +61-8 9321 5887 ǀ Fax +61-8 9321 5884 ǀ Email info@lonrhomining.com ǀ www.lonrhomining.com Listed on Australian Securities Exchange : Codes LOM, LOMO and LOMOA Directors David A Lenigas Non-Executive Chairman Miles A
Slide 3: Regional Map of Africa
Mediterranean Sea TUNISIA MOROCCO ALGERIA WESTERN LIBYA SAHARA EGYPT Regional Map of Africa Red MAURITANIA Sea MALI NIGER ERITREA SENEGAL THE CHAD SUDAN GAMBIA DJIBOUTI BURKINA GUINEA GUINEA BISSAU BENIN TOGO NIGERIA COTE CENTRAL ETHIOPIA SIERRA DTVOIRE GHANA LEONE AFRICAN REPUBLIC LIBERIA CAMEROON
Slide 4: Lulo Diamond Concession location
D.R.C The Lulo Diamond D.R.C Concession is located in the Lunda Norte Province of Angola, about 700km east of Luanda. LULO The Lulo Project targets both alluvial and kimberlite diamond targets and is a Joint Venture between Lonrho and Endiama, the national diamond company of Angola. NAMIBIA
Slide 5: Lulo Concession area and Cuango River
The Lulo Diamond Concession covers an area of about 3,000km2 and is located on the eastern margin of the Cuango River. The alluvial diamond fields on the Cuango River are the largest in Angola. Lonrho’s Concession is surrounded by concessions held by some of the worlds leading diamond miners.
Slide 6: Lulo Project geology
LONRHO DIAMONDS LULO PROJECT Luanda The Lulo Project occurs within flat- lying sediments of the Congo Basin Atlantic that overlie the Achaean Congo Craton. Ocean The project lies within the Lucapa Graben, an area tectonically favorable for kimberlite emplacement. There has been extensive artisanal d
Slide 7: Lulo Project
The Lulo Diamond Concession is located about 700km east of Luanda on a major road Lulo Project D.R.C D.R.C LULO NAMIBIA
Slide 8: 2008 helicopter-borne geophysical survey
In 2008, Lonrho flew a detailed, helicopter-borne geophysical survey over the southwestern third of the concession. The survey collected high-quality magnetic, radiometric and topographic data. The area covered by the survey included known kimberlites and an extensive diamondiferous alluvial system.
Slide 9: Landsat
LANDSAT The geophysical survey covered about 1000km2 in the south- western portion of the concession.
Slide 10: Topography
TOPOGRAPHY A shaded relief image showing the topography of the survey area. The area is well drained with the major Cacuilo River dominating the southern section. Cacuilo River Artisanal mining occurs on the Cacuilo River and a number of the larger tributaries.
Slide 11: Aeromagnetics
AEROMAGNETICS A detailed, helicopter-borne aeromagnetic survey was flown. The flight-line spacing was 100m with a nominal sensor height of 20m . An independent geophysical study identified 217 targets with the majority thought to be related to kimberlite pipes. The image is of the total magnetic fie
Slide 12: Aeromagnetics: first vertical derivative
AEROMAGNETICS The anomalies are well-defined on the 1st vertical derivative image shown here. Fissure dykes associated with the kimberlite pipes pipes and blows can be clearly seen. The Cacuilo River valley covers a large number of the anomalies.
Slide 13: Aeromagnetics: targets identified
AEROMAGNETICS The targets identified from the geophysical interpretation are shown. The yellow rectangle shows an area selected for ground follow-up during November and December 2008.
Slide 14: Radiometrics (Total Count)
RADIOMETRICS (Total Count) Outcropping or sub- outcropping kimberlites can often be detected from radiometrics . The image shown is of total count radiometrics and shows that a number of the magnetic anomalies have a coincident radiometric anomaly.
Slide 15: 2008 Follow-up
2008 FOLLOW-UP Several of the larger magnetic targets were visited and sampled during November and December 2008. Two of these targets are shown. Loam samples collected from both targets showed high counts of kimberlitic indicators . Outcropping kimberlite was recognised at the K72 anomaly.
Slide 16: 2010 Program
2010 PROGRAM The map shows the topography of the area with the Cacuilo River highlighted.
Slide 17: 2010 Program
2010 PROGRAM The map shows the topography of the area with the Cacuilo River highlighted. The locations of all magnetic anomalies are highlighted. Lonrho plans to locate and sample 40 of the larger magnetic anomalies.
Slide 18: 2010 Program – Kimberlite Exploration
2010 PROGRAM – KIMBERLITE EXPLORATION Previous studies indicate that a high proportion of the magnetic targets will be kimberlites. The 2008 work, the radiometric data and the topography of the area, all suggest that the kimberlites will be shallowly buried and many should outcrop. Initial evaluatio
Slide 19: 2010 Program
2010 PROGRAM The proposed kimberlite sampling program targets less than 20% of the anomalies identified in the area.
Slide 20: 2010 Program
2010 PROGRAM The proposed kimberlite sampling program targets less than 20% of the anomalies identified in the area. Lonrho will complete an alluvial sampling program targeting major stream systems that are actively eroding pipes in the area.
Slide 21: 2010 Program – Alluvial Sampling
2010 PROGRAM – ALLUVIAL SAMPLING The proposed kimberlite sampling program targets less than 20% of the anomalies identified in the area. Smaller magnetic targets may represent kimberlite pipes or fissures with an exceptional diamond grades or containing diamonds of extremely high value (eg larger an
Slide 22: Alluvial Evaluation
Alluvial Evaluation About 50km of the Cacuilo River and its flood plain lie within the Lulo Concession. The gravels associated with Cacuilo River Valley are known to be diamondiferous and have a history of artisanal mining.
Slide 23: Artisanal diggings on a Cacuilo River terrace
Photograph showing extensive artisanal diggings on a Calcuilo River Terrace
Slide 24: Alluvial Evaluation
Alluvial Evaluation Lonrho will undertake a major evaluation of the Cacuilo River alluvials. Trenches will be excavated at right angle to the river flow, at at 2km intervals along the channel. The trenches will be used to define gravels within the channel and its flood plain.
Slide 25: Alluvial Evaluation
Alluvial Evaluation The trenches will define the distribution of gravels within the channel and its flood plains. Based on the trenching, 1,000 tonne samples will be excavated from suitable gravel horizons and processed to recover diamonds. The program will establish grade distribution and provide d
Slide 26: Current Operations
CURRENT OPERATIONS While the ongoing Angolan wet season is restricting field operations, Lonrho is actively preparing for its 2010 program. The company’s proposed exploration program is comprehensive and requires access to infrastructure that is not readily available in Angola. Lonrho has acquired,
Slide 27: Acquisition of Infrastructure
1 Acquisition of Infrastructure The company has recently purchased earthmoving equipment that will be used to complete the proposed exploration program at Lulo. The equipment includes: 1. Caterpillar 928 Front End Loader 2. 30 tonne Caterpillar Excavator 3. Caterpillar D6 Bulldozer 3 2
Slide 28: Acquisition of Infrastructure
Acquisition of Infrastructure Feed Hopper and conveyor Scrubber and Trommel 15 TPH DMS Module Lonrho has also acquired a 15 tonne per hour Dense Media Separation (DMS) plant. The DMS plant will be assembled on-site and used to process kimberlite and alluvial samples excavated from the Lulo concessio
Slide 29: 2010 Will Be a Decisive Year for Lonrho!
2010 WILL BE A DECISIVE YEAR FOR LONRHO! The company is exploring what is considered by many to be “the most promising diamond project in the world today”.* The proposed exploration program is expected to identify significant primary (kimberlitic) and secondary (alluvial) diamond deposits during the