金平县田房锡矿地质特征及控矿因素  

GEOLOGICAL CHARACTERISTICS AND ORE-CONTROLLING FACTORS OF THE TIANFANG TIN DEPOSIT IN JINPING COUNTY

作　　者：彭近峰 PENG Jin-feng(Yunnan Rongbo Engineering Design and Consulting Co.,Ltd.,Kunming 650051)

机构地区：[1]云南荣泊工程设计咨询有限公司,云南昆明650051

出　　处：《云南地质》2025年第1期67-70,共4页Yunnan Geology

摘　　要：田房锡矿赋存于花岗岩体外接触带志留系下统角岩化变质石英粉砂岩中,脉状产出,Ⅰ号矿体水平厚1.17m~10.83m,平均品位Sn0.59ω%~2.73ω%;Ⅱ号矿体水平厚1.30m~16.23m,平均品位Sn0.31ω%~1.64ω%。锡矿产于角岩带构造裂隙中,锡石矿物形成微粒集合体。初步认为属热液型锡石硫化物矿床。The Tianfang tin deposit occurs in the hornfelsed metamorphic quartz siltstone of the Lower Silurian in the outer contact zone of the granite.The orebody occurs in a vein-like form.The horizontal thickness of the No.Ⅰ and No.Ⅱ orebody are 1.17-10.83 m and 1.30-16.23 m,with an average Sn grade of 0.59ω%-2.73ω%and 0.31ω%-1.64ω%,respectively.The Sn orebodies are in the structural fractures of the hornfels zone,and cassiterite forms fine-particle aggregates.The deposit is considered to be a hydrothermal cassiterite-sulfide deposit.

关 键 词：岩体外接触带 角岩化石英粉砂岩 热液型 田房锡矿 云南金平 

分 类 号：P618.44[天文地球—矿床学]