Article: Aerial Survey Leads to Gold Discovery

  • Fokker in Flight-640x500-c
    November, 1933, Canadian Airways Limited Bulletin (Reprinted from The Quebec Mining News)

    Word has been received at the head office of the Northern Quebec Gold Mines Limited that two new veins have been discovered on the south part of the property. While one of them is narrow, the other one is a true fissure vein of at least 4 feet width. Both veins show heavy mineralization and may develop into an important new source of ore. The section where the discovery has been made is covered by clay and has been prospected time and again without result.

    The story of the new discovery is most interesting and sounds as if taken from a novel. In the beginning of October, the Northern Quebec Gold Mines Limited had Canadian Airways make an aerial survey of the property. The Company received a map – scale 1” to 200’ – by the middle of the month. In examining this map, Mr. W.A. Hesse, M.E., managing director of the Company, discovered a number of curious white dots which grouped themselves along a distinct line running across the south part of the property in the east-west direction. As an aerial map picture of this kind is composed of many overlapping prints and as these dots appeared on each of the original prints, the white dots could not have been caused by a faulty plate, but necessarily represented the actual picture of some condition on the ground. On the other hand, they could not represent rock outcrops, as there are none at this part of the property.

    An investigation on the ground was started and revealed the following conditions: The ground in question is covered by a certain kind of hard grass about 3 feet high. There are, however, patches where grass won’t grow and which are covered with low-growing plants and creepers. In following up this condition, Mr. Hesse found that it was these spots which showed up in such a curious manner on the aerial map.

    Under ordinary conditions, the investigation would have ended there but Mr. Hesse, judging from a similar experience he had in Norway years ago, thought differently. He reasoned that a change in vegetation must be caused by a change in soil and a change in soil by a change of its mineral content. The composition of the soil depends on the nature of the bedrock, the slow decomposition of which steadily introduces new minerals into the overlying soil. If the spots with different vegetation had been distributed irregularly all over this section of the property, the condition would have been without importance. However, as they were grouped along a definite line this could mean only one thing, namely, a change in the nature of the bedrock along this line, meaning the presence of a dyke or shear zone or something similar below the overburden.

    As a result of this reasoning, a crew of men were put to work on a suitable place and already, on the first day of work, a small vein was discovered in a well-defined shear zone. Two days later a second vein, over 4 feet wide, was found a few feet south. The discovery is exactly on the line indicated by the aerial survey and as the aerial map indicates a length of these conditions of about 2,300 feet, this discovery will probably attain great importance.

    New veins are located in line with the gold bearing veins of the Adanac Gold Syndicate further east and show the same characteristics.

    This article originally appeared in the November, 1933 edition of the Canadian Airways Limited Bulletin. This undated photo is of a Fairchild FC-2.

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