[ Note - here is only Part 1 of an abstract comprised of three separately indexed parts ]. Exploration of the Tarcoola Goldfield and nearby areas recommenced under a new licence tenure group in June 1991, with joint venture operator Queens Road Mines. Early attention was focussed on the abandoned Perseverance gold mine, with RC infill drilling of potential stratabound, structurally-controlled gold targets in late 1991 (17 RC holes for 1103 m). A review of existing brownfields BLEG geochemical data identified a north to northeast-trending pattern of soil gold anomalies located on both the northern and southern sides of the Trans Australian Railway line, that corresponded to the expected structurally-controlled orientation of concealed mineralisation. Vertical and inclined RAB drilling (117 holes for 3523 m) was carried out on eight of these soil geochemical prospects. Geological studies confirmed the existence of more than one phase of granite intrusion within the mapped Tarcoola batholiths. At least one phase is older than the basal Tarcoola Formation beds, and is disconformably overlain by these strata : while at least one other granite phase is younger than these strata, and intrudes into them. Another previous mapping observation was verified : the granite body which hosts Au mineralisation WNW of Tarcoola township is completely bounded by a deeply breached anticline of Tarcoola Formation strata. The finely disseminated gold occurs in potentially economic grades and thicknesses within intensely altered granite capped by Tarcoola Formation at the Perseverance, Federal and Royal George mines and other small minor workings in this area, variably dipping according to the structural position on this anticline, and mirroring the contact outline. Some of the mineralisation has been remobilised into sub-vertical N-trending shears in the granite body margins, as made particularly evident in the Tarcoola Blocks mine and to a comparable degree at Perseverance. It was concluded that the gold mineralisation at Tarcoola is linked to the youngest phase of granite intrusion (the 1580 Ma Hiltaba Suite granites), and possibly to the volcanic equivalents of these plutonic rocks. The elliptical, 1.5 km x 1 km gold geochemical anomaly overlying an aeromagnetic high anomaly at Mulgathing was inspected, however, no surface expression of mineralisation, alteration or underlying rock types was seen. Grid-based 50 m x 50 m soil and geobotanical sampling and ground radiometrics were conducted next, revealing a geochemical and radiometric response typical of a subcropping granite body mineralised either at its margins or along structures developed within the granite. RAB drilling (126 holes for 2520 m) was carried out here in mid-1992 (no conclusions available - see Note above).