GreenRoc stock: GTK Mintec processes a 20-tonne sample. What it means for GreenRoc stock
Published on 10/22/2026 at 05:17 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWSProject tests shape the next phase
- GreenRoc reported a 95.2 percent graphite concentrate grade on September 29, 2026.
- Phase III drilling reached a 21.3-meter graphite intersection on August 12, 2026.
- GreenRoc stock last stood at GBp 3.75 on October 21, 2026.
GreenRoc Strategic Materials (GB00BMV44W52) reported a 95.2 percent graphite concentrate grade with more than 90 percent recovery from Amitsoq test work on September 29, 2026. The company also selected GTK Mintec in Finland to process a 20-tonne bulk sample, a step linked to its planned Danish active anode material pilot plant, according to Investegate.
Processing result sets next test
The result is important because the locked-cycle test was designed to approximate continuous plant processing. The 20-tonne sample is due to be processed at GTK Mintec in Outokumpu, Finland, with the resulting concentrate intended as feedstock for GreenRoc's pilot plant in Denmark. The company said the processing results would be available before the end of 2026, according to Investegate.
Three milestones frame Amitsoq
GreenRoc began Phase III drilling on July 28, 2026, reporting a 9.7-meter true thickness in its first hole. On August 12, 2026, the company said three holes were complete and described a 21.3-meter true-thickness intersection in a third hole. On September 29, 2026, it reported the 95.2 percent concentrate grade and more than 90 percent recovery. These dated milestones are detailed by Simply Wall St and the company announcement.
What does the project timeline mean?
The next phase depends on converting a strong laboratory result into bulk-sample processing data. GreenRoc's Amitsoq resource is reported at 23.05 million tonnes with an average grade of 20.41 percent graphite, while the planned pre-feasibility study is expected to start by the end of 2026, according to Investegate. That makes the bulk-sample results the clearest near-term technical marker for the project.
Stock context and next dates
GreenRoc's last quoted AIM price was GBp 3.75 on October 21, 2026 at 2:08 p.m. BST. The same quotation showed a 52-week range of GBp 2.00 to GBp 5.90, placing the price within a wide development-stage trading band. The company said on September 29, 2026 that GTK processing results were expected before the end of 2026, while Phase III drilling was planned to conclude by October 16, 2026.
Trading context
GreenRoc Strategic Materials is an AIM-quoted mining company focused on developing graphite and other critical-mineral projects in Greenland. Its latest technical milestones combine exploration, processing and pilot-plant work rather than commercial revenue.
Market context: Market report FTSE 100.
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