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Earth Explorer is an online source of news, expertise and applied knowledge for resource explorers and earth scientists. Sponsored by Geosoft.


News & Views

News Archive

December 7, 2016

Geosoft introduces IP and resistivity inversion in VOXI Earth Modelling

Geosoft has added induced polarization and resistivity data inversion to its VOXI Earth Modelling 3D inversion software service. Geoscientists are now able to create detailed 3D models of conductivity and chargeability from IP and resistivity survey data with VOXI. The resulting models can assist in interpreting and targeting regions for mineral and environmental applications...

December 5, 2016

Mexico's Deepwater Round Exceeds Expectations

Some of the world's biggest oil companies showed up Dec. 5 and agreed to invest on the Mexican side of the Gulf of Mexico, proving that deepwater exploration still has a pulse despite challenging market conditions...

November 30, 2016

Magnetic inversion results for Ngamiland available for download

A regional-scale geophysical inversion of magnetic field data in the Ngamiland region of northwestern Botswana is now available for download from the Botswana Geoscience Portal, a partnership initiative of the Botswana Geoscience Institute, industry sponsors and Geosoft...

November 30, 2016

LIGO Resumes Search for Gravitational Waves

After a series of upgrades, the twin detectors of LIGO, the Laser Interferometer Gravitational-wave Observatory, have turned back on and resumed their search for ripples in the fabric of space and time known as gravitational waves. LIGO transitioned from their engineering test runs to full science observations at 8 a.m. Pacific Standard Time on November 30...

November 9, 2016

International Volcano Scientists Unite

For the first time, the United States will host the international Volcano Observatory Best Practices workshop, previously held only in Italy. The workshop will take place this month in Vancouver, Washington. It is designed specifically for volcano observatories around the world and their staff to exchange ideas and best practices with each other...

October 4, 2016

USGS Assesses Mineral Potential for Sagebrush Habitats in Six Western States

USGS has completed a comprehensive assessment and inventory of potential mineral resources covering approximately 10 million acres of Federal and adjacent lands in Idaho, Montana, Nevada, Oregon, Utah and Wyoming...

October 3, 2016

Uganda Targets Up to U.S.$100 Million for Mineral Exploration

Uganda is well endowed with mineral resources and, like many naturally-gifted African countries, is becoming keen on ensuring that these resources play a transformative role in its long-term structural transformation dream - the Vision 2040...

September 9, 2016

Small-Scale Fishers Get A Big Boost With First-Of-Its Kind Impact Investment Fund

Conservation organization Rare announces the Meloy Fund for Small-Scale Fisheries at Our Ocean Conference. The Global Environment Facility, one of the largest funders of conservation worldwide, will be investing $6 million into the fund...

September 1, 2016

Scientists take to the skies to track West African pollution

Scientists operating research aircraft over West Africa have detected organic materials in the atmosphere over a number of urban areas, contributing to concerns of the rise in pollution across the region...

August 17, 2016

New IGS Xplore prospectivity maps for Botswana

International Geoscience Services have released a series of base metal prospectivity maps for the Ngamiland District of northwestern Botswana using free geodata available on the recently-launched Botswana Geoscience Portal, hosted by Geosoft. The maps identify favorable areas for copper, zinc and lead mineralization using geological, geochemical and geophysical datasets downloaded directly from the portal.

August 11, 2016

NexGen Makes New High Grade Discovery

NexGen Energy reported the discovery of a new high grade zone of mineralization 4.7 km northeast of the Arrow Deposit as part of an on-going summer drilling program on its 100% owned, Rook I property, Athabasca Basin, Saskatchewan...

August 10, 2016

Rampion UXO Disposal to Take Place This Week

E.ON has confirmed that the two unexploded devices, detected along the Rampion offshore cable route will be safely disposed this week following the consultation with the Marine Management Organisation...

August 9, 2016

Diamonds In The Rough: E&Ps Find New Reserves In Mature Basins

The oil industry’s history demonstrates clearly that new plays and prospects have long been found in mature basins that were thought to be well on the way to being squeezed dry. Through the acquisition of new data, developing new concepts and coming up with fresh interpretations, long-producing basins around the world from the North Sea to Malaysia have continued to reveal new riches...

August 8, 2016

Northern Shield Identifies High Quality VTEM Targets at Séquoi

Northern Shield Resources announced the results of the interpretation and modelling of the VTEM survey from the Séquoi Property in the Labrador Trough of Quebec . Séquoi is owned 100% by Northern Shield and is being explored for Noril'sk style Ni-Cu-PGE massive sulphides. After geophysical modelling and interpretation of the VTEM data from Séquoi, six VTEM anomalies of significant interest have been identified...

August 3, 2016

Rio Tinto tailors big data drive to copper

Rio Tinto will put the weight of an exploration big data push and its newly-formed Growth and Innovation group behind its desire to identify a "tier 1" copper asset. Speaking at the annual Diggers & Dealers conference in Kalgoorlie, Growth and Innovation group executive Stephen McIntosh said Australia was "overdue for a tier 1" mineral discovery of any type...

August 1, 2016

Tetra Tech Awarded $200 Million Navy CLEAN Contract

Tetra Tech announced that it has been awarded a $200 million, single-award contract by Naval Facilities Engineering Command (NAVFAC) Atlantic. Through the Comprehensive Long-term Environmental Action Navy (CLEAN) contract, Tetra Tech will provide environmental engineering support services to installations within the NAVFAC Atlantic Area of Responsibility...

May 3, 2016

NATO Science for Peace and Security (SPS), MODUM Partners announce "Young Scientist Summer School on Sea Dumped Chemical Weapons"

This international project cooperates closely with CHEMSEA (Search and Assessment of Chemical Weapons) Project for and sharing and knowledge transfer...

April 12, 2016

Monday mad rush for gold stocks

Renewed optimism about the outlook for gold saw investors pile back into gold stocks, pushing many stock to 52-week highs in heavy volumes...

April 11, 2016

Medgold Resources: Continues to Expand the Boticas Gold Project, Portugal; Proposes $200,000 Private Placement

Medgold Resources is pleased to announce new assay results from contiguous rock-chip sampling from the Limarinho South zone at its Boticas gold project in Portugal, which include a highlight of 6.0m @ 5.7 g/t Au...

April 8, 2016

De-carbonizing our energy sector

Nuclear energy currently provides around 11 percent of the world's electricity. China, the European Union, the United States, India, Russia, South Korea, and other nations’ have major existing fleets...

April 1, 2016

Follow-Up Drilling Results Indicate Wide Gold Zones at Hendricks Gold Discovery

Gascoyne Resources Limited announced that it has received the final assay results from the 10,000 metre aircore exploration drilling programme...

March 26, 2016

The Oil Market Is Finally Hitting Its Breaking Point

After a significant reduction in investments over the past two years, oil companies can no longer overcome the production declines from legacy wells...

March 15, 2016

N-Sea Expands into the French Offshore Wind Industry

Subsea IMR provider, N-Sea, has signed a letter of intent with CERES Recherches & Expertise Sous-Marine and TechSub Industrie Environement, to provide subsea survey, installation and remediation services to the French offshore wind industry...

March 9, 2016

PDAC 2016 Convention Exceeds 22,000 Attendees

Optimism and opportunity abounded at the PDAC 2016 Convention of The Prospectors & Developers Association of Canada in spite of recent industry challenges...

March 3, 2016

6 Alpha Launches EOD Contracting Division

6 Alpha Associates, a specialist risk consultancy practice, with expertise in the assessment and management of unexploded ordnance, has launched a dedicated explosive ordnance disposal division...

Green Giant Graphite: Molo deposit a game changer for Energizer

by Virginia Heffernan on July 20, 2012discovery

At a time when most junior explorers are struggling to attract market attention, Toronto-based Energizer Resources enjoyed a 27% share price gain for the first half of June on the strength of its growing graphite-vanadium resource in Madagascar.

What has investors excited is the discovery of the Molo deposit, a 2-km long multi-folded graphite zone that outcrops at surface and returned intersections of up to 108 metres grading 8.8% carbon in recent drilling. Geologic mapping shows the width of the zone to be 20-400m, while trenching and drilling confirms that the graphite mineralization is continuous over 330 m lengths.

The new graphite deposit is a game changer for Energizer because Molo is shallow, has both high tonnages and grades (the company is anticipating a 100 million tonne deposit grading 6-10% graphite), and contains “ jumbo” flake (+50 mesh) graphite at an average purity of 93% carbon that, unlike most natural graphite, can be easily liberated through simple crushing. 

The deposit is located on a joint venture property with Australia-based Malagasy Minerals Limited. Energizer has a 75% interest and is the operator.

It is not uncommon for vanadium and graphite to occur together in nature and both materials are finding new markets in green energy applications. Graphite, in particular, has been a market darling of late because dwindling exports from China, the world’s main graphite producer, have raised prices enough to justify new mines in other parts of the globe.

That combination - a strong market and encouraging exploration results - has prompted Energizer to shift its Madagascar focus from vanadium to graphite and fast track the Molo deposit to production. A drill program designed to establish a 43-101 compliant resource is currently underway and a Preliminary Economic Assessment study is expected by October.

Although outcrop on Energizer’s extensive land package in southern Madagascar is relatively plentiful, geophysics has proven to be an effective tool in delineating Molo and several other graphite zones. A ground-based EM-31 survey outlined surface mineralization even where it was not exposed, while a time domain electromagnetic airborne survey effectively probed the zones at depth.

The EM-31 survey also identified multiple graphitic horizons within each zone. For example, the Molo deposit has five stacked zones within its 2-km strike length, giving it an aggregate strike length of 10 km.

Overall, Energizer has identified more than 320 km of graphitic trends as a result of 3,780 m of drilling, 1,900 m of trenching, 670 prospecting samples, geological mapping, three airborne geophysical surveys, and 160.5 km of ground-based electromagnetic geophysical surveying.

The successful marriage of geological and geophysical techniques can be attributed to the calibre of Energizer’s technical team, says Brent Nykoliation, Energizer’s VP of Business Development. Headed up by Vice Presidents of Exploration Quentin Yarie, and Craig Scherba, the team is part of the same group that successfully identified and delineated chrome and VMS discoveries in the Ring of Fire camp of northern Ontario for Energizer’s sister company, MacDonald Mines.

“There’s very little to no outcrop on the Macdonald properties so it’s very difficult to do any geological work,” says Nykoliation. “The extra knowledge needed to interpret the geophysics there allowed us to go in and interpret the geophysics in Madagascar in a much more meaningful way than anyone else had.”

Energizer imports and models its geophysical, geochemical and geological data using proprietary methods with Geosoft’s Oasis montaj.Target is the application of choice for analyzing and managing the company’s drill projects.

Since acquiring the Green Giant vanadium property in August 2007, Energizer has spent more than $16 million on exploration on the Madagascar land package. Its properties straddle about 80% (120 km) of a regional lithospheric shear zone related to the break up of Gondwana that created the high temperatures and pressures needed to leave behind unusually high grades of both vanadium and graphite.

The property is underlain by highly metamorphosed and sheared quarto‐feldspathic
gneisses, metasedimentary rocks (marble, chert, quartzite, and iron formation),
hornblende biotite gneiss and minor amphibolite, graphitic schist, and granitoid. There are two main directions of faulting that run parallel to foliation.

For Energizer, the adjacent Green Giant and Malagasy properties started out as a base metal exploration projects, changed direction when significant quantities of vanadium were found, and were enhanced when graphite emerged as an important and potentially lucrative target just last year.

The significance of the graphite deposits did not become apparent until Vice President of Exploration Craig Scherba was giving a presentation to the Royal Ontario Museum (ROM) about mineralization at Green Giant, one of the largest 43-101 complaint vanadium resources in the world. The ROM experts noted the usually high carbon grade in the vanadium samples and encouraged Scherba to take a closer look at the property’s graphite potential.

The potential to establish graphite as a credit to the vanadium resource led to a reconnaissance program with the goal of delineating new graphitic trends and comparing them to the graphite associated with the vanadium mineralization. That initial program uncovered several high grade graphite zones and eventually led to the recognition that Molo, in particular, had the potential to develop into an open pit mine.

Energizer expects to have a NI 43-101 report on the Molo deposit ready by the end of this year with production anticipated in early 2015.