The Raja Au-Co mineralization in the Paleoproterozoic Peräpohja belt northern Finland is part of wider Rompas-Rajapalot mineralized area with several known occurrences. characterized by distinct tourmaline occurrences, spatially associated mineralization. Four texturally types were identified although all analysed tourmalines belong to alkali-group and are classified as dravite. δ 11B values fr...

The Santa Lúcia copper-gold deposit lies in the southeastern portion of Carajás Mineral Province, along NW-SE splays Fault. is hosted by a rhyolitic subvolcanic rock, which crosscut pegmatite intrusions. paragenetic evolution at encompasses an early stage chlorite alteration, followed potassic alteration with microcline, greisenization (quartz-muscovite-tourmaline), ore precipitation, and late ...

Lithium (Li) can be found in many minerals, including lepidolite. Lepidolite is pegmatite-related tin deposits the Phang Nga area southern Thailand. According to their field occurrence, petrography, mineral chemistry, and whole-rock geochemistry, Li-bearing pegmatites granitic rocks study linked Thailand as part of SE Asian belt. The are characterized by an abundance lepidolite, K-feldspar, pla...

Tourmalinization characterizes the most pervasive alteration type in the Nezam Abad ore deposit, west-central Iran. It delineates high-temperature centers of mineralization and together with quartz and cassiterite form inner parts of the alteration halo. The composition of tourmalines plots mostly along and between the proton and alkali-deficient end members. Tourmaline in quartzdioritic host i...