SKARNHO

SKARNHO (az shvedi — loy, partov), jinshoi kuhii metasomatiero guyand, ki tarkibashon az silikathoi kalsiy, magniyu ohandor va alyumosilikatho iboratand. Skarnho asosan dar zonai kontakti (aksar dar joyhoi bahamrasii jinshoi magmavi bo ohaksang yo dolomitho) va bazan dar dokhili jinshoi magmavi va tahshiniyu metamorfi vz tasiri mahlulhoi balandharorati magmatogeni ba jinshoi atrof ba vujud meoyand. Az tasiri khimiyavii mahlulhoi jinshoi atrof tarkibi khimiyavi va mineralogii khudro tamoman yo qarib tamoman tagyir doda, ba Skarnho tabdil meyoband. Vobasta ba khususiyathoi tarkibashon Skarnho kalsiydor va magniydor meshavand. Skarn dar zonai kontakti va dokhili jinsho ba shakli linza, qabat, gulba, rag va gayra vomekhurand. Dar bayni jinshoi kuhi vujud doshtani Skarnho nishonai khubi mavjudiyati sarvathoi zerizamini meboshad, chunki aksari Skarnho tarokumi kaloni madanhoi metalli (makhsusan ohayan mis, surb, ruh, volfram, molibden) va gayrimetalli (flogopit, boratho va gayra) dorayad. Az hamin sabab tipi makhsusi konho — konhoi skarib judo karda shudaand, ki onho doroi ahamiyati kaloni sanoatiand.

                                                                              M. Janobilov.