HIGHLIGHTS
• Stelar Metals identifies multiple locations of outcropping high-grade zinc mineralisation at Linda.
• XRF returned high grade mineralisation values between 10-25% Zn in outcrop
• Zinc mineralisation found within large zinc soil anomaly defined by Stelar’s recent soil survey at Linda.
• CSA Global field work confirms the geological setting at Linda is considered highly prospective for economic carbonate-hosted zinc.
• Surface samples have been summitted to laboratories for multi-element analysis and petrology with results expected in 4-8 weeks
• Follow-up mapping,sampling, and geochemical surveys to recommence later this month at Linda
• High resolution orthoimagery and LiDAR has been acquired to assist with ground mapping and logistics.
Critical minerals explorer Stelar Metals Limited (ASX:SLB) (“Stelar Metals” or the “Company”) is pleased to announce high grade zinc mineralisation has been identified at multiple locations at the 100% owned Linda Zinc
Project in South Australia (Figure 1). Linda Zinc is one of five highly prospective copper and zinc projects the Company intends to explore, committing to an aggressive exploration program in this world class mining district.
Multiple high-grade zinc and lead anomalies have been recently identified within the Linda Project by Stelar Metals during the Company’s first field campaigns during May 2022 (Figure 2).
High grade zinc mineralisation was confirmed at Linda by multiple analyses using a portable XRF and “zinc-zap” stain. XRF resultsincluded high-grade values between 10% and 25% in one outcrop that extended for several metres (Figure 3 left) as well as additional high-grade readings were also returned for zinc and lead from several other locations (Figure 3 right). Simple “zinc-zap” chemical field tests also verified the presence of high-grade zinc mineralisation in outcrop (Figure 4).
Stelar Metals’ first soil geochemical survey has identified a large coherent zinc soil anomaly which extends 300m x 250m with values up to 0.7% zinc and up to 675ppm lead in soils (Figure 2). This anomaly remains open to the
southeast and northwest. This survey was undertaken by over the Linda Project with 279 samples collected on nominal 10-20 metre centres and analysed using a portable XRF.
During May 2022, Dr Mark Allen from CSA Global, a highly regarded expert in carbonate-hosted zinc mineralising systems completed a field program and report on the Linda Zinc Project. CSA’s report confirms the presence of zinc and lead mineralisation as dominantly oxide phases interpreted as the in-situ oxidation of primary sulphide mineralisation. Mineralisation was observed in hand specimens and outcrop, consistent with the descriptions and mapping in BHP’s historic open file reports. Mineralisation appears associated with carbonate grainstone units which were more permeable and contain clear evidence of karst development, these are mappable controls on
mineralisation.
In the mid 1980’s BHP undertook geological mapping of the Linda Zinc Project and visible base-metal mineralisation was mapped within the carbonate stratigraphy at surface in several locations. Notably 15 out of 20 of BHP’s shallow RC holes (Figure 2), which were only drilled to 25m depth intersected highly anomalous zinc. Two follow-up diamond holes both intersected sphalerite mineralisation. Photographs of core in historic open-file reports clearly indicate the presence of zinc sulphide mineralisation in the form of sphalerite (Figure 5). Importantly, Stelar Metals has identified in the field the location of most of BHP’s historic drill hole collars and
recognise due to their shallow depth and orientation these holes were not adequately tested the main target of Linda.
CSA Global’s recent field work and report has also confirmed that the geological setting at Linda is considered highly prospective for economic carbonate-hosted zinc. CSA Global’s study reports that the Linda Project has elements of Irish Type and MVT mineralisation styles and that the geological setting strongly supports the view that the area is prospective for Kipushi-Beltana Type mineralisation (refer section below).
SOURCE: Stelar Metals
DATE: June 3, 2022