广东怀集地区矽卡岩型铁多金属矿床同位素地球化学特征及其地质意义

冼源宏,詹华思,李健唐

Isotope Geochemical Characteristics and Geological Significance of Skarn Type Iron Polymetallic Deposit in Huaiji Area，Guangdong Province

Yuanhong XIAN,Huasi ZHAN,Jiantang LI

表5 晚白垩世花岗岩体微量元素含量

Table 5 Trace element content of granite in Late Cretaceous

序列名称 岩性 微量元素含量/（×10-6） W Sn Bi Mo U Th Pb 连阳序列 细粒少斑黑云母二长花岗岩 2.77~6.04 4.26~8.39 0.27~0.65 0.46~3.50 6.58~11.70 29.90~37.90 43.50~53.40 粗中粒斑状（角闪）黑云二长花岗岩 2.23~16.5 4.28~6.22 0.15~1.61 0.64~3.04 7.78~14.40 26.70~73.00 35.60~45.80 细中粒斑状角闪黑云二长花岗岩 2.20~5.73 3.58~12.40 0.15~0.59 0.26~1.38 7.22~17.40 30.20~50.10 35.90~58.30 细中粒斑状黑云母二长花岗岩 1.08~5.91 2.27~25.30 0.21~2.67 0.57~5.70 13.20~25.30 44.20~63.60 44.10~74.50 细中粒含斑黑云母二长花岗岩 1.76~3.28 2.70~6.14 0.24~6.73 0.61~8.92 11.00~32.70 47.60~64.30 36.30~81.20 三岗山序列 细粒含斑—细粒黑云母二长花岗岩 0.43~2.77 1.85~5.93 0.09~2.49 0.22~2.27 2.34~4.57 12.13~22.10 24.10~44.14 细粒多斑黑云母二长花岗岩 0.48~3.63 1.25~1.90 0.11~0.17 0.44~0.58 3.08~5.54 15.01~15.56 23.99~40.80 锅坑花斑岩 细粒斑状黑云母二长花岗岩 10.40~44.70 13.01~23.00 0.49~1.14 0.20~0.34 6.73~8.04 41.50~50.50 26.20~34.80 大雾山序列 花岗斑岩 1.02~1.96 1.92~2.47 0.04~0.11 0.30~2.43 3.55~6.97 12.20~23.60 20.60~24.40 细粒多斑黑云母正长花岗岩 0.94~1.68 2.69~3.15 0.07~0.12 0.56~0.67 3.62~5.08 11.40~18.40 24.00~26.80 维氏值 1.5 3 0.01 1 3.5 18 20