Results
Table 1 - Results for Testing using the AEISG Code of Practice
Table 2 - Results for Testing using the QMR Reactive Ground Test
Prior to testing as per the AEISG Code of Practice each sample was assessed for reactivity risk based on pH, carbonate and amount of reactive sulphide using the QMR Reactive Ground Test (refer to Table 1 and Table 2 for results of both tests). All samples were alkaline and which reduces the risk of reactivity. Seventeen samples contained sulpide levels of trace (refer to Figure 1 and Table 2). Two samples contained a measureable amount of sulphide but did not contain carbonates and hence a temperature isotherm was generated when tested as per the AEISG Code of Practice. Three samples exibited a pyhsical reaction that pushed the stoppers off the test tubes (refer to Figure 2).
Figure 1 – Examples of pyrite observed under microscopy in the milled samples 5321C-RG05, 5321C-RG7, 5321C-RG08, 5321C-RG09, 5322C-RG02 and 5322C-RG07
FIGURE 2 - A physical reaction that pushed the stoppers off the test tube was observed for samples 5321C-RG07, 5322C-RG07 and 5322C-RG09 (AEISG Test)
Conclusion:
Sample 5321C_RG07 tested as marginal and sample 5322C_RG07 testes as reactive when tested as per the AEISG Code of Practice and all other samples tested as not reacive.
Reference Data:
QMR Reactive Ground Test: rga30.xlsx, templog26.xlxs, templog27.xlxs and templog28.xlxs
AEISG Test: templog6.xlxs, AEISGdata24xlxs
Assessed By: Dr G. Cavanough
Date: 17th September 2022