Intrusion of the Kalaybar nepheline syenite into the Cretaceous pelitic and calcareous sediments has produced a thermal aureole up to 1km thick. Six mineralogical zones are developed in the pelitic rocks with minerals such as cordierite, K feldspar, sillimanite and corundum. Chemically suitable rocks are partially melted in response to the heat from the pluton. Five mineralogical zones are deve...

A nar row, elon gate re gion of an oma lously high meta mor phic grade runs par al lel to Kootenay Lake, in the cen tral part of the Kootenay Arc, south east ern Brit ish Co lum bia. Meta mor phic grade ranges from the chlorite/bi o tite zones on the flanks to the sillimanite+K-feld spar zone in the cen tre of the high. In this pa per, we pres ent a sum mary of struc tural, meta mor phic and ge...

A common perception among petrologists is that Al is immobile in most geologic processes, and, therefore, the conversion of gabbro with high Al-content (16-18 wt. % Al2O3) to granitic rocks with lesser Al-content (12-13 wt. % Al2O3) by Kand Si-metasomatism is not possible. The mobility of Ca, Mg, and Fe is not doubted in hydrothermal fluids, but Al is thought not to be mobile. Two different ter...

the formation of atoll garnet in the ardara aureole, nw ireland, is discussed using the textural, chemical and electron backscatter diffraction (ebsd) data. textural evidence suggests the possibility of incipient of garnet replacement from the core. in addition, the presence of staurolite and andalusite in the core of small atoll garnets as well as the occurrence of sillimanite in the core of l...

We investigated the potential of tailings generated from chrysotile asbestos fiber production as a source iron, nonferrous metals, and gold. proposed use granulometric separation systematically examined different enrichment processes, namely magnetic separation, gravity concentration, using Knelson concentrator, to extract valuable components. The characterization initial tailing samples reveal...

The Mogok Metamorphic Belt (MMB) in Myanmar is a polymetamorphic, mainly Paleogene granulite-uppermost amphibolite facies terrane consisting of marbles and calc-silicates hosting spinel, ruby sapphire. Jurassic charnockite-syenite intrusions, as well Eocene-Miocene leucogranite intrusions are also present. Pelitic rocks uncommon, where present, have sillimanite, both primary inclusions garnet s...