Unique finer-grained interstitial textures, occurring as small blocks or irregular shapes of 0.15–10 mm, were found merging in the coarse-grained textures Kazakhstan jadeitite. According to mineral content, texture could be classified into two types: Type I, consisting almost all jadeite crystals, minor omphacite, and little analcime, II, comprising mainly omphacite with crystals. They both sho...

In this study, twenty five partially vitrified rocks and four samples of collected on the top hill called Serravuda (Acri, Calabria, Italy) are analyzed. The goal is to shed light origin these enigmatic materials. analyzed a breccia cemented rock fragments (gneiss, granitoid, amphibolite fragments) which extends for more than 10 m, forming continuous mass along northern north-west border flat h...

kalateh ahani is located 27 km southeast of gonabad within the khorasan razavi province. the area is part of lut block. sub-volcanic monzonitic rocks intruded regional metamorphosed shemshak formation (jurassic age). magnetic susceptibility of less altered monzonitic rocks is 0.6%., as, pb and zn > 1%, au up to 150 ppb and sn = 133 ppm. the sn content of vein in the northern part of kalateh aha...

-The Fawakhir ophiolitic sequence is composed mainly of serpentinites, metagabbros, boninitic metagabbros and metavolcanics. The serpentinites have geochemical features similar to those of depleted-mantle peridotites. Major and trace element characteristics show that the ophiolitic metagabbro and metavolcanic rocks are of tholeiitic to calc-alkaline affinity. REE abundances in the metagabbros a...