Exploration Drilling Grant Initiative (EDGI) – Second Release of Round 5 Data
Mineral Resources Tasmania has released to Open File the final reports from three more round 5 EDGI co-funded drilling projects, completed in July 2022. These projects were extended due to COVID–related delays. The first five round 5 reports were made Open File in October 2022.
Gold mineralised contact zone in EDGI hole MGTS1 at Tin Spur (near Moina) between Roland Conglomerate and quartz-feldspar-biotite porphyry. Buff coloured sericite alteration hosts an intersection of 3.15 m at 3.3 g/t Au, 1.18% As between 201.95m and 205.1m.
The reports now being made Open File cover the following projects:
Cleveland (Tin, Copper, Lead, Zinc, Tungsten) – Holes C2120 to C2122 – Rockwell Minerals Pty Ltd
Balfour (Copper, Gold) – Hole DBBA1 - D&B Mining Pty Ltd
Tin Spur (Gold, Tin, Tungsten, Bismuth) – Hole MGTS1 – Moina Gold Pty Ltd
Data includes the final reports as well as all available geological, assay and core photos. MRT is planning to collect Hyperspectral data from these cores and this will be made available in a few months. Drill core is available for viewing, by appointment, at the Mornington Core Library.
The Cleveland project targeted three holes at previously untested self-potential (SP) anomalies from a 1954 Bureau of Mineral Resources survey. The SP anomalies are located north-east along strike from the Cleveland tin mine, whose mineralisation was also detected by the survey. No significant mineralisation was intersected by the EDGI holes and the source of the SP anomalies is thought to be conductive Halls Formation black shales.
The Balfour project aimed to test the Murrays Reward lode about 200 m below existing drilling and the old mine workings. The hole intersected two major reef structures in the target area, with a zone of pervasive silicification extending below the lower reef. The first reef assayed 7.65 m @ 0.81% Cu, from 413.25 m to 420.9 m. The Second Reef was intersected from 457.8 m to 465.25 m but was almost barren, returning only 0.9 m @ 0.16% Cu from 460.1 m to 461.0 m. The hole is interpreted to prove the continuity, at depth, of the copper mineralised main lode structure at Murrays Reward mine.
The Tin Spur project, near Moina, targeted a 3D IP anomaly, adjacent to a Cambrian porphyry, in contact with Moina Sandstone. The hole intersected variably altered Moina Sandstone grading into basal Roland Conglomerate. Below the Roland Conglomerate the porphyry was intersected, with the upper three metres sericitized and hosting gold-bearing arsenopyrite vein mineralisation. The interval from 201.95 m to 205.1 m returned 3.15 m at 3.3 g/t Au and 1.18% As and is interpreted by the company to be the principal source of the IP anomaly.
Company Report - Onshore 22_8623: Drilling report for - EDGI Round 5 - EL7/2005 Cleveland Project
Company Report - Onshore 22_8627: Exploration Drilling Grant Initiative – Round 5 – Report on Drill Hole DBBA1 at the Murrays Reward / Central Mt. Balfour Prospect on EL10/2014 Balfour and ML 1M/1976.
Company Report - Onshore 22_8628: Exploration Drilling Grant Initiative - Round 5 - Report on Drill Hole MGTS1 - Tin Spur Prospect - EL29/2009 Cethana