Scientific publications

An extension of the Hattu Greenstone Belt was traced in West Karelia near the boundary of the Jalonvaara-Hattu-Tuulos Greenstone Belt (Prigranichny Severny prospect) by the Karelian Geological Survey. Diorite-tonalite and granodiorite complexes that are similar in petrochemical characteristics to the Kuittila and Viluvaara complexes and are likely to contain gold were identified. An example of this type is the Kadilampi massif with a stockwork sulphide-quartz zone that hosts goldsulphide mineralization. A near-N-S-striking shear zone, named Kadilampi-Kuslokki, which extends from Lake Kaidolampi and the Kadilampi, Gornoye and Solukha to Lake Kuslokki, was revealed. Alteration zones with gold-rare metal mineralization in granitoids and combined alkaline and felsic metasomatic rocks with magnetite, sulphide dissemination and gold in host units are widespread in the shear zone. Restricted to Proterozoic gabbro-dolerite and potassic alkaline metasomatic rock dykes are the most intense magnetic anomalies triggered by titanomagnetite and magnetite mineralization.