The Yukon-Tanana Terrane of Yukon, Alaska and northern British Columbia consists of poorly understood, lithologically diverse successions of metasedimentary and metavolcanic rocks and voluminous midand late Paleozoic granitic metaplutonic bodies (Mortensen and J i l s o n , 1 9 8 5 ; M o r t e n s e n , 1 9 9 2 ) . S i g n i f i c a n t volcanogenic massive sulphide deposits occur in the terran...

Laser action has been demonstrated in chalcogenide glass microsphere. A sub millimeter neodymium-doped gallium lanthanum sulphide glass sphere was pumped at 808 nm with a laser diode and single and multimode laser action demonstrated at wavelengths between 1075 and 1086 nm. The gallium lanthanum sulphide family of glass offer higher thermal stability compared to other chalcogenide glasses, and ...

The sheltered environment of the Algares +30 level adit (underground mine gallery) contributes to preservation secondary water-soluble minerals formed on tunnel walls. massive sulphide and related stockwork zone are hosted by Mine Tuff volcanic unit exposed in walls gallery, showing intense oxidation hydrothermal alteration. Minerals from halotrichite group were identified efflorescent salts, t...