Why Is Solstice Minerals Ltd (ASX:SLS) Share Price Falling Today?

Sonal Goyal

23 October 2026 02:47 PM AEDT

Why Is Solstice Minerals Ltd (ASX:SLS) Share Price Falling Today?

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Key Highlights

Solstice Minerals Ltd (ASX:SLS) was trading at A$1.74, down 12.56%, during the 23 October 2026 trading session.
On 13 October 2026, the company reported results from five diamond tails at its Nanadie Copper-Gold Project in Western Australia.
The company said three drill rigs are operating at Nanadie and assays are pending from 13 diamond holes and over 30 RC holes.

Solstice Minerals Ltd (ASX:SLS) shares were trading at A$1.74, down 12.56%, during the 23 October 2026 trading session, well below the S&P/ASX 200 (XJO), which was at 8,760.50, down 0.37% (32.70 points) at 1:16 pm AEDT. Solstice is a mineral explorer focused on its 100%-owned Nanadie Copper-Gold Project, located northwest of Sandstone in the Western Australian Goldfields. The company's most recent drilling update, released on 13 October 2026, reported new diamond core results that it said extend beyond the boundary of the current Mineral Resource Estimate (MRE) at Nanadie.

Latest Developments

Diamond Tail Results Beyond the Resource Boundary

On 13 October 2026, Solstice reported results from five new diamond tails, each extending earlier Reverse Circulation (RC) drillholes beyond the current MRE boundary. Hole NANRCD014 returned 54.8m at 0.83% copper and 0.30g/t gold from 453m, including 25.6m at 1.33% copper and 0.53g/t gold, as well as 64.1m at 0.94% copper and 0.23g/t gold from 520.9m. Hole NANRCD017 returned 60.0m at 0.59% copper and 0.18g/t gold from 372m. Partial results from step-back hole NANRCD042 included 18m at 1.11% copper and 0.56g/t gold from 382m, with further assays pending, according to the announcement.

Shallow Intercepts and Silver Results

The company said NANRCD058 returned a combined RC and diamond intercept of 91.4m at 0.97% copper and 0.42g/t gold from 143m, including 4.9m at 4.67% copper. Step-back hole NANRCD059 returned 32m at 0.43% copper from 385m and 25.4m at 1.00% copper from 450.6m. Hole NANRCD017 also intersected 7m at 1,019g/t silver from 499m, including 2m at 3,103g/t silver. The company noted that further work is required to establish the geometry and significance of this and other silver-dominant intercepts.

Ongoing Drilling Program

Solstice said on 13 October 2026 that three drill rigs are operating at Nanadie and that the multi-rig RC and diamond program is expected to continue throughout the remainder of 2026. Assays are pending from a further 13 completed diamond holes and over 30 RC holes. Chief Executive Officer and Managing Director Nick Castleden said the eastern Margin of the host gabbro is emerging as an important target for expanding the MRE. The company also said it had A$45 million in cash as at 30 June 2026 and no debt.

About Solstice Minerals Ltd

Solstice Minerals Ltd is an ASX-listed exploration company based in Subiaco, Western Australia. Its flagship asset is the 100%-owned Nanadie Copper-Gold Project, situated within a granted Mining Lease about 100km northwest of Sandstone. According to the company, Nanadie includes an existing Inferred MRE of 40.4 million tonnes at 0.4% copper and 0.1g/t gold, containing 162,000 tonnes of copper and 130,000 ounces of gold. The company said the mineralisation sits in a gabbro unit 100m to 200m wide and at least 1.2km long, beneath shallow cover, with about 90% of the current MRE in fresh rock. Solstice is also exploring the nearby Stark Prospect and corridors extending north from Nanadie and Stark.

Related Sector Context

Solstice operates in copper-gold exploration within the broader ASX mining sector. Companies at this stage typically report drilling intercepts and assay batches as work progresses, and outcomes can vary from hole to hole. The Western Australian Goldfields is a long-established mining region, and the company described Nanadie as lying on a granted Mining Lease in flat terrain. By comparison with the move in Solstice shares, the S&P/ASX 200 was at 8,760.50, down 0.37%, at 1:16 pm AEDT on 23 October 2026.

Risks to Weigh In

Nanadie's existing resource is classified as Inferred, the lowest confidence category under the JORC Code.
The company remains at the exploration and resource definition stage, and drilling results do not guarantee an expanded MRE.
Assays are still pending from more than 40 holes, so results to come may differ from those reported.
The company noted that further work is needed to understand the significance of the silver-dominant intercepts.
Exploration spending is funded from existing cash, which the company reported as A$45 million at 30 June 2026.

Catalysts on Watch

Assay results from 13 completed diamond holes and over 30 RC holes, which the company said will provide news flow over the coming months.
Continuation of the multi-rig RC and diamond program through the remainder of 2026.
Downhole EM geophysical target testing, including the NANRCD033 conductor plate.
Further drilling at the nearby Stark Prospect and northern exploration corridors.

The Story So Far

Solstice Minerals shares were trading at A$1.74, down 12.56%, during the 23 October 2026 trading session, compared with a 0.37% decline in the S&P/ASX 200. The company's most recent announcement, dated 13 October 2026, reported copper-gold and silver intercepts from five diamond tails at Nanadie and confirmed that drilling continues with three rigs. Further assay results are expected to be released by the company as they become available.

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