Abstract
The 1·57 Ga Eurajoki stock in southwestern Finland is composed been overemphasized at the expense of exsolution and reof biotite–hornblende–fayalite granite, biotite granites and late-stage crystallization. topaz-bearing granite, as well as related topaz-bearing rhyolite (ongonite) dykes. Miarolitic cavities indicate the presence of a separate fluid phase during late stages of crystallization of the topazbearing granite, and greisen-type Sn–Be–W–Zn mineralization is closely associated with it. Subsolidus reactions have modified the
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