矿产与地质
礦產與地質
광산여지질
MINERAL RESOURCES AND GEOLOGY
2013年
2期
132-136
,共5页
张泰%刘运纪%周琳%梁立民
張泰%劉運紀%週琳%樑立民
장태%류운기%주림%량립민
金矿床%构造地质%矿化蚀变%爬奔%老挝
金礦床%構造地質%礦化蝕變%爬奔%老撾
금광상%구조지질%광화식변%파분%로과
Au deposit%structural geology%mineralization and alteration%Paben%Laos
爬奔金矿是近年来在老挝琅勃拉邦新发现的大型金矿床。研究表明该区有含铁碳酸岩型金矿和石英脉型金矿两种矿化类型,前者金矿体产在灰岩中,主要受NW-NNW向断裂构造蚀变带控制;后者金矿体产在韧性剪切带旁侧的次级平行断裂或片理化带中,受NE向韧脆性剪切带控制。矿床成因类型应属沉积-韧脆性剪切多期构造活动和热水溶液叠加改造型金矿床。
爬奔金礦是近年來在老撾瑯勃拉邦新髮現的大型金礦床。研究錶明該區有含鐵碳痠巖型金礦和石英脈型金礦兩種礦化類型,前者金礦體產在灰巖中,主要受NW-NNW嚮斷裂構造蝕變帶控製;後者金礦體產在韌性剪切帶徬側的次級平行斷裂或片理化帶中,受NE嚮韌脆性剪切帶控製。礦床成因類型應屬沉積-韌脆性剪切多期構造活動和熱水溶液疊加改造型金礦床。
파분금광시근년래재로과랑발랍방신발현적대형금광상。연구표명해구유함철탄산암형금광화석영맥형금광량충광화류형,전자금광체산재회암중,주요수NW-NNW향단렬구조식변대공제;후자금광체산재인성전절대방측적차급평행단렬혹편이화대중,수NE향인취성전절대공제。광상성인류형응속침적-인취성전절다기구조활동화열수용액첩가개조형금광상。
Paben Au deposit is a large-scale Au deposit which is discovered in Luang Prabang, Laos. Studies suggest that there are two types of mineralization:ferriferous carbonatite type Au deposit and quartz vein type Au deposit. The former type of Au deposits occurs in limestone, and is mainly controlled by NW-NNW strike faulted structure altera-tion zone;the later one occurs in subsidiary parallel fracture or zone of schistosity by the side of ductile shear belt, and is controlled by NE strike ductile and brittle shear belt. The genesis type of the deposit is superimposed reforma-tion of sediment-ductile and brittle shear multiphase tectonic activity and hydrothermal solution.