This lease is situated on the Dividing Range south-west from Musgrave Telegraph Station. The geological notes contained in this report refer to the geology and workings of the Looking Glass mica deposits.

The following eleven holes have been drilled: holes Nos. 22-33. Ongoing drilling operations, and the results and conclusions that can be drawn to date are outlined in this report.

In company with Mr. L.A. Richardson an inspection was made of this deposit on Friday, December 4th. The workings were plotted and examined, though these sections off the main drives could not be inspected very thoroughly owing to having no lighting available except matches.

A point has been reached in the prospecting of this field where it is necessary to review results and consider future actions. The bore on site A has been completed and Mr. Knight has concluded his preliminary geological survey of the area. The information now available modifies some of our earlier views. The following statement summarises the position.

Geophysical test surveys were made at Boolarra with the object of determining whether geophysical methods were suitable for the exploration of the bauxite deposits found in that district. Field operations were carried out during the period 17th April to 15th May and consisted of the following: 1. Open Cut Deposit - Surface survey and examination of available sub-surface data, geophysical survey using the Resistivity method, over a small area adjacent to the open cut, geophysical survey using the geomagnetic and Natural Earth Potential methods, on one transverse; 2. Orgill's Deposit - Surface survey and examination of available sub-surface data; 3. Budgaree Deposit - Surface survey and examination of available sub-surface data.

The following notes accompany a plan of one of the areas tested at Moonta, namely, an area embracing sections of Elder's Main Lode and Elder's West lode between Warmington's and Taylor's shafts. The test surveys on which the plan and notes are based were made in March, 1942. The plan is intended to illustrate in a general way the nature of the potential gradient results of all the tests in the Moonta-Kadina area and it should not be accepted as a basis for assessing the value of the tests as a whole. A great number of tests were made embracing the use of potential gradient, electromagnetic, magnetic and self-potential methods, and the nature of the results varied considerably. Correlation between geophysical results and known geology was good in many cases, but indifferent in others. It will be appreciated therefore, that a decision to carry out routine surveys can only be based on a critical examination of the results as a whole.

The Pink Lakes, also known as Linga Lakes, lie in the Parish of Mamengoroock, Country of Weeah, in north-western Victoria, about 10 miles north-north-east of the small town of Underbool on the Ouyen to Pinnaroo railway (See Fig. 1). The three lakes known as the Pink Lakes that are being worked for salt are Sailor Lake, Lake Crosby and Crescent or Home Lake. The areas of the salt leases are: Sailor Lake leases, 206 acres; Lake Crosby leases, 395 acres; Crescent Lake leases, 311 acres. Portions of the above areas are occupied by the beaches and fore-shores of the lakes, and the total potential salt-bearing surface of the three lakes is actually about 700 acres. In addition to the Pink Lakes above-mentioned there are in the vicinity two other salt lakes viz: (a) Lake Poulton, about 70 acres in area, and two miles west of Lake Crosby, and (b) an un-named lake, here referred to as 'School' Lake, probably rather less than 50 acres in area and situated one mile south of the west end of Crescent Lake. Salt is formed on both these lakes, but Lake Poulton is somewhat difficult of access on the north-east and north, and School Lake is in a Government Reserve and is not available for leasing. The geology and salt resources of the Lakes are outlined. Several proposals, put forward with a view to increasing the yield of salt from Pink Lakes, are discussed herein.

No. 2 Bore, Boronga is situated north of Moree, near the New South Wales - Queensland border. The samples forwarded for microfaunal examination were from between the depths of 25 feet and 2104 feet.

The Chilcot mine orebody is a steeply dipping, well defined fissure zone of brecciated andesite, with chalcopyrite in shoots, averaging about 8 per cent copper. Other minerals are bornite, pyrite, hematite, magnetite, quartz and calcite. Pre-ore faults displace the lode channel and are associated with the mineralisation. The ore body is developed by two levels 160 feet in length at 104 and 178 feet depth, and ore is being extracted from a stope between the two levels northeast of the shaft. Water level is a little over 100 feet from the surface. The general pitch of the ore body is about 45 degrees to the northeast. Exploration is recommended of the probable northeast extension of the lode down the pitch, and geophysical investigation to attempt to locate further possible shoots of ore.

Plans Nos. 617, 618 and 619 are submitted herewith. These plans show no geophysical results. The resistivity curves have been examined and it is considered that certain conclusions can be drawn regarding the behaviour of the clay bedrock. A preliminary structural interpretation has been made on the basis of depth determinations to an interface, assumed to be the top of the clay bedrock. This involves the analyses of three and four layer curves.