{"id":33307,"date":"2023-05-25T08:00:47","date_gmt":"2023-05-25T07:00:47","guid":{"rendered":"https:\/\/www.innovationnewsnetwork.com\/?p=33307"},"modified":"2023-05-25T08:14:55","modified_gmt":"2023-05-25T07:14:55","slug":"how-will-brazil-lake-lithium-project-power-energy-transition","status":"publish","type":"post","link":"https:\/\/www.innovationnewsnetwork.com\/how-will-brazil-lake-lithium-project-power-energy-transition\/33307\/","title":{"rendered":"Facilitating the energy transition through lithium and rare earth exploration"},"content":{"rendered":"

The Goldfields Group of Companies is aiding the energy transition through the Debert Lake mineral deposit<\/a> and Brazil Lake Lithium Project in Nova Scotia, and aims to produce battery-grade lithium at deposit scale.<\/h2>\n

The Brazil Lake Lithium Project is expanding through an aggressive drilling programme<\/h3>\n

The Brazil Lake<\/a> Lithium Project in Nova Scotia is an exciting hard rock lithium (Li) exploration story that continues to play out with every new drill hole. The discovery of spodumene (lithium) in the Army Road pegmatite by the Champlain Mineral Ventures exploration team in late 2022 has energised further exploration.<\/p>\n

This work complements the historically discovered but previously only relatively shallowly drilled North Pegmatite. Further drilling on the project has continued to delineate significant widths of spodumene-bearing pegmatites down plunge to the southwest to lengths of up to 800m each.<\/p>\n

The continuation of the thickness and lithium grade of these spodumene-bearing pegmatites is accumulating towards a total deposit of significant scale. These spodumene-bearing pegmatites are often found in swarms. The Brazil Lake Lithium Project mineral claims contain other untested spodumene surface anomalies in glacial till-covered areas up to 5km to the southwest towards Deerfield.<\/p>\n

This means it is highly probable that other spodumene-bearing pegmatite discoveries will be made in the near future on this project.<\/p>\n

Discovery of the Brazil Lake Lithium Project<\/strong><\/p>\n

The Brazil Lake Lithium Project was discovered in 1960 after a spodumene-bearing glacial erratic boulder was found beside Holly Road, 25km northeast of Yarmouth in Yarmouth County, Nova Scotia. Two pegmatite dykes up to 200m long, and 10-12m wide were then identified (the North and South pegmatites), but little was known about them as the area is covered by a thick layer of glacial till.<\/p>\n

In 1993, the Nova Scotia Department of Natural Resources drilled five diamond cores through these pegmatites, and they have been under an exploration license since that time.<\/p>\n

Champlain Mineral Ventures Limited gained ownership of the claims covering the Brazil Lake Lithium Project in 1997. The company drilled the property in 2002, 2003, 2010, 2019, and 2020; providing an additional 71 diamond drill cores that established the location, orientation, grade, thickness, and zoning of the North and South pegmatites to relatively shallow levels.<\/p>\n

\"Brazil<\/p>\n

They also intersected the Army Road pegmatite, which had a parallel strike and was situated only about 250m to the southeast, but it did not contain significant Li or tantalum (Ta) concentrations where it intersected.<\/p>\n

A rise in lithium demand has motivated further exploration of the resource<\/strong><\/p>\n

Recent increases in lithium demand<\/a> due to the use of lithium batteries motivated further exploration of the property by Champlain Mineral Ventures Ltd. This involved stripping the glacial till from the tops of the North and South pegmatites, undertaking metallurgical studies that have demonstrated that the pegmatites contain lithium (in spodumene \u2013 LiAlSi2<\/sub>O6<\/sub>), as well as high-quality quartz, albite, microcline, muscovite, rubidium (Rb) in microcline and muscovite, minor beryl [Be3<\/sub>Al2<\/sub>Si6<\/sub>O18<\/sub>], and low concentrations of tantalum, tungsten, and tin.<\/p>\n

Lastly, Champlain Mineral Ventures Ltd also commissioned a 43-101 Mineral Resource Estimate by Mercator Geological Services in April 2022, which estimated that the North and South pegmatites contained approximately 934Kt @ 1.37% Li2<\/sub>O.<\/p>\n

In mid-2022, the high-grade drilling results to date and the clear exploration potential on the greater Brazil Lake Lithium Project area attracted the attention of Australian exploration company Lithium Springs Limited (LS1). Once a deal between Champlain and LS1 was struck, LS1 began funding a drill programme to test for extensions to the North and South Pegmatites at depth.<\/p>\n

Exploration holes were also drilled into the Army Road pegmatite to the southwest along the strike of the initial drill holes that had not discovered any spodumene at that time.<\/p>\n

After 17 holes started to successfully define and extend the North and South pegmatites at depth, the drill rig moved to the Army Road Prospect, and from the first drill hole, spotted by Champlain\u2019s geologist, Don Black, intersected a new spodumene-bearing pegmatite. Ongoing drilling at the Army Road Prospect has continued to successfully expand this deposit down plunge to the southwest with thicknesses up to 20m wide and up 1.9% Li2<\/sub>O over considerable widths over a strike of some 800m.<\/p>\n

Then to complement the ongoing drilling success of the Army Road Prospect, a second drill rig was engaged in April to focus on the North and South pegmatites, which has also continued to successfully expand this deposit down plunge to the southwest with thicknesses up to 12m wide and up to 2.3% Li2<\/sub>O over considerable widths.<\/p>\n

The drill rigs continue to turn on the Brazil Lake Lithium Project with over 90 drill holes completed at the Army Road and North\/South pegmatites. This drilling continues to deliver excellent results and these lithium deposits remain open down plunge to the southwest.<\/p>\n

The rapid growth of these hard rock lithium deposits has been amazing to observe and the excitement around the potential of the Brazil Lake Lithium Project to one day possibly be of a scale that could support an economic mining operation is palpable.<\/p>\n

\"Spodumene
Fig. 1: Spodumene rich pegmatite from Brazil Lake Deposit<\/figcaption><\/figure>\n

IXOS\u00ae<\/sup> LI: Clean nano-technology for the production of battery-grade lithium (LCE)<\/h3>\n

An innovative disruptive technology to produce domestic LCE at deposit scale<\/strong><\/p>\n

Sixth Wave Innovations Inc. creates advanced extraction and purification technology for the mining industry. The technology increases profitability while reducing environmental impact.<\/p>\n

Its flagship product, IXOS-AU, is a molecularly imprinted polymer (MIP) specifically designed to replace activated carbon in gold\/silver mines. IXOS has shown significantly increased efficiency in extracting gold and silver from leach solutions.<\/p>\n

It leaves less gold in tailings; provides a robust media that does not break down during use, thereby increasing overall gold and silver yield; and operates with fewer and recyclable reagents and a substantially reduced power requirement. Overall benefits have shown the ability to reduce all-in sustaining costs per ounce in excess of $100\/oz produced.<\/p>\n

The substantial reduction in reagents and power contribute to significant reductions in the operating carbon footprint of the mine, reducing environmental impact. IXOS-Au has been extensively tested in laboratory and pilot plants in mines around the world, and has been independently tested by several mine engineering firms.<\/p>\n

Developing an efficient lithium extraction process
\n<\/strong><\/p>\n

Under contract to Champlain Mineral Ventures through The GOLDFIELDS Group of Companies, Sixth Wave applied its same systems engineering approach to evaluating and developing a greener and more efficient process for extraction and purification of lithium from hard rock sources such as pegmatite from the Brazil Lake Deposit in Nova Scotia.<\/p>\n

Lithium has become a metal classified by many countries as a critical mineral and, in North America, a critical mineral associated with national security interests. High demand continues to be forecasted as the electrification of the transportation industry and others are pushing demand for battery-grade lithium in both carbonate and hydroxide forms.<\/p>\n

Arguably, the pace of innovation in mining and extracting lithium from hard rock sources such as pegmatite has lagged behind the increasing demand for battery-grade lithium from substantial deposits around the world.<\/p>\n

Furthermore, in North America, the government pressure is increasing to develop supply and production of battery-grade material domestically as opposed to shipping raw materials to potentially adversarial countries for processing which also adds cost, the increased carbon footprint from shipping, and utilisation of less environmentally friendly processing methods.<\/p>\n

The historically used process for hard rock includes the separation of the lithium-bearing spodumene from the surrounding material using floatation to increase the lithium concentration and reduce the volume of resulting ore that must be treated to extract the ore. This float concentrate, which can be seen pictured in Fig. 1, is then superheated for a period of time to convert the spodumene into a form that the lithium can be leached from the spodumene. From that point, conventional processing has a complex set of steps combining a high-temperature sulphuric acid leaching process and multiple purification stages which use additional adsorbents and reagents to achieve lithium sulphate which is then converted into the carbonate or hydroxide form.<\/p>\n

Sixth Wave evaluated this process against some historical alternatives including a basic flow chart originally developed by Chen et al<\/em>., 2011, that appeared to be a simpler pathway with fewer process steps and non-toxic reagents. The generic flow chart is depicted in Fig. 2.<\/p>\n

\"\"
Fig. 2: General Flow Sheet from Chen et al 2011<\/figcaption><\/figure>\n

With proprietary changes to this flow sheet, focusing on the processes post-conversion of the spodumene to the leachable form called beta-spodumene, Sixth Wave was able to generate significant improvements in extraction and recovery of lithium while reducing\/eliminating toxic chemicals, reducing capital, and operating expenses and a lower environmental impact. Relevant improvements include:<\/p>\n