The Aitik Cu-Au-Ag deposit in northernmost Sweden is one of Europe's largest copper-gold mines. Even if the gold grade is as low as 0.2 ppm, gold is an important metal for the mine, which produces 1.5-2 tonnes of gold per year as a by-product. Being a vital part of a large production system, the Aitik mine production plans are the basis for development of smarter and more efficient processes downstream. A geometallurgical study has therefore been initiated in order to improve the confidence of the production plans by the achievement of a better understanding of the site, character and mineral association of gold within the ore body, and we here report the results from the preliminary petrographic studies. The gold detected so far occur mainly as < 40 µm grains associated with silicate minerals such as quartz, biotite and feldspars, and with magnetite. Gold grains occur both as inclusions within mineral grains and at grain boundaries. The diversity of gold occurrences and the dominance of silicate-associated gold instead of traditionally sulphide-associated, highlights the importance of understanding this variability for metallurgical processing.