Solis Minerals (ASX:SLM) led a diverse group of Australian mining stocks this week, posting a remarkable 154.84 percent gain on the ASX following its strategic acquisition of the Brazil Lithium project. The move underscores a heating lithium sector, which saw other companies focused on critical minerals also feature prominently in the Investing News Network’s weekly round-up of top performers.
The broader market, as reflected by the S&P/ASX 200 (INDEXASX:XJO), opened at 8,793.40 on Monday, April 20, and closed at 8,935.80 on Thursday, April 23, marking a 1.59 percent increase over the period. However, not all commodities shared in the upward trend, with gold prices declining 2.56 percent in US dollars to US$4,707.14 and silver experiencing a larger 5.68 percent dip to US$76.21 by Thursday’s close of Australian markets.
Solis Minerals’ Strategic Lithium Foothold in Brazil
Solis Minerals, an emerging energy metals explorer, dominated the week’s gains with a 154.84 percent increase, closing at AU$0.079. The company, which maintains a copper footprint in Peru, made headlines on Tuesday, April 21, by announcing the 100 percent acquisition of the Brazil Lithium project. This significant asset was acquired from a subsidiary of mining giant Rio Tinto (ASX:RIO,NYSE:RIO,LSE:RIO).
The newly acquired project encompasses a substantial 93,000-hectare landholding situated within the highly prospective Araçuaí–Salinas Lithium Valley in Minas Gerais, Brazil. Solis CEO Mitch Thomas highlighted the strategic importance of the deal, stating, “The Brazil Lithium Project gives a substantial and strategic foothold in one of the world’s emerging hard rock lithium districts, directly alongside ground where our leadership team has previously delivered major lithium exploration success.” Solis confirmed it is fully funded for an initial drilling program, complementing its existing copper portfolio. Shares of Solis Minerals, which had been in a trading halt since April 17, surged from AU$0.031 on April 16 to AU$0.54 on Tuesday before reaching their peak of AU$0.079.
Canadian Phosphate Advances Mine-to-Market Strategy
Canadian Phosphate (ASX:CP8) secured the second spot with a 64.29 percent weekly gain, closing at AU$0.115. The company, focused on high-grade, low-impurity phosphate projects in Canada, particularly its Wapiti and Fernie projects in British Columbia, released its March quarterly activities report on Thursday. The report underscored growing interest in the phosphate sector, driven by its critical role in fertilizer production amidst heightened geopolitical tensions, trade restrictions, and global food security concerns.
Managing Director and CEO Daniel Gleeson noted the company’s progress, stating, “We are progressing readiness activities for the Barnes 10,000-tonne bulk sample operation, which will occur in Q3, to further support our growing customer base of regenerative manufacturers in North America.” Canadian Phosphate is also engaging with off-takers and plant engineers for a potential Single Super Phosphate plant. Shares of the company rose from AU$0.070 last week to AU$0.115 on Thursday.
Explorers Show Promise in Gold, Copper, and Lithium
Mammoth Minerals (ASX:M79), with a portfolio spanning gold and copper projects, saw its shares climb 44.44 percent to AU$0.065. The company’s primary focus is the Excelsior Springs gold project in Nevada, US, where it holds an option to earn up to an 80 percent interest. Recent exploration at Excelsior Springs identified multiple high-priority targets, with rock chip samples returning high-grade results of up to 5,580 g/t silver and 45.5 g/t gold. Managing Director Glenn Poole emphasized that “The scale of the individual targets and their high-grade nature warrant immediate follow-up to advance them to drill-ready status.”
Greenwing Resources (ASX:GW1), a critical minerals company exploring lithium and graphite, recorded a 38.98 percent gain, closing at AU$0.082. The company provided a significant exploration update for its San Jorge lithium project in Argentina, revealing that magnetotelluric geophysical survey results indicate the lithium-rich brine system could extend to depths of approximately 1,000 metres, more than double previous drilling depths. Managing Director Peter Wright commented, “These results reinforce our view that the project has the potential for further resource growth and potentially a significant future source of lithium supply.”
Rounding out the top five, Killi Resources (ASX:KLI), an exploration company focused on gold and copper in Australia, saw its shares increase by 38.24 percent to AU$0.235. The company’s Mount Rawdon West gold-copper project in Queensland continues to be a key focus, with reconnaissance mapping and sampling indicating a large subvolcanic intrusive center at the King Louie Breccia target. Killi announced a trading halt after markets closed Thursday, pending a further announcement.
This week’s performance across the ASX mining sector highlights a dynamic environment where strategic acquisitions, promising exploration results, and heightened commodity interest are driving significant investor attention. The continued momentum in the lithium sector, alongside renewed focus on critical minerals like phosphate and persistent interest in precious metals, suggests a vibrant outlook for Australian resource companies.
