Background. Although the Kuhilal deposit of Mg skarns has been thoroughly studied, tourmaline in their composition never considered [5, 6, 16]. Uvite, a variety, was mentioned list rare minerals only with its crystallochemical formula [17]. L.N. Shabynin, great connoisseur skarns, noted rarity various deposits. Tourmaline this type is characterized by strong variation ferruginosity and signific...