Ann: Garden Gully Follow-Up Drilling Underway-THX.AX, page-17

Your remarks prompted me to research thermal relationship to arsenopyrite and gold. The following extract is worth reading.

Introduction: arsenopyrite is most frequently encountered in medium-to-high temperature hydrothermal veins and other ore deposits. It is commonly associated with pyrite, galena, chalcopyrite, sphalerite and cobaltite (medium-temperature assemblages) or with cassiterite and wolframite (high-temperature assemblages). Gold deposits, particularly those of the mesothermal gold-quartz type, often contain abundant arsenopyrite and the gold and arsenopyrite may in some cases be intimately associated. Arsenopyrite is readily distinguished from pyrite (with which it commonly occurs) by its tin-white colour: when struck with a geological hammer it emits sparks and produces a garlic-like odour. END

THX Lydia deposit obviously falls into the category listed above... Mesothermal gold - quartz type.

THX would have a fair idea during this drilling program when and at what depth they intersect the arsenopyrite body. The EXR hand held could measure the arsenopytite content but unfortunately can't read the gold content, assays would need to be done. So the drilling can go on following the target zone.

Very interesting discovery, some big mines have been found with the same mineral background.