关于亲花岗岩类矿床研究的进展和趋势

PROGRESSES IN THE STUDIES OF GRANOPHILE MINERAL DEPOSITS

本文试就矿床与花岗岩类侵入体存在成因联系的证据、亲花岗岩类矿床形成的地球化学因素和岩石成因因素三方面的研究进展和趋势作简短概述。矿床和火成岩在地理上的伴生、分带现象、金属与特殊种属花岗岩类之间的关系、岩体微量元素的浓度与其伴生矿床的关系以及相对年代关系，是确定矿床和火成岩之间存在成因联系的依据。元素离子的电子层构造、离子半径和离子势等地球化学性质与矿石沉积地点、母火成岩成分、矿石形成方式、矿物生成顺序、矿石矿物成分、矿质沉淀温度以及矿石形成深度等都有内在联系。花岗岩类岩荣的形成与矿质的富集、岩浆和富水流体之间的关系和造矿元素在岩浆与富水流体之间的分配关系是控制矿床形成的三个关键性因素。

This paper reviews progresses of studies on the genetic relationship betweenmineral deposits and granitoid intrusions,and geochemical and petrogenetic factors of gra-nophile mineral deposits geneses. Geographic association,zonation,affinity of certainmetals with particular granite type,relation between trace element concentration in a giv-en intrusion and the associated deposits,and the age consistency between ore formationand granite intrusion are the evidences which support a genetic affiliation of mineral de-posits to the granitoid intrusions. The behaviour of elements,especially the electron-shellstructure,ionic radius and ionic potential.makes up different types of granophile mineraldeposits. The critical factors controlling the genesis of granite-related deposit are the for-mation of granitic magma,relation between the melt and mineralizing fluid and the par-tioning of elements between them.