normal align=center>铌钽矿床参考性工业指标
normal align=center>矿床类型
normal align=center>
normal align=center>边界品位
normal align=center>最低工业品位%
normal align=center>最低可采厚度m
normal align=center>夹石剔除厚度m
normal align=center>（Ta，Nb）2O5
normal align=center>或Ta2O5
normal align=center>（Ta，Nb）2O5
normal align=center>或Ta2O5
normal align=center>花岗伟晶岩类矿床
normal align=center>≥1.0
normal align=center>0.012～
normal align=center>0.015%
normal align=center>0.007～
normal align=center>0.008%
normal align=center>0.022～
normal align=center>0.026%
normal align=center>0.012～
normal align=center>0.014%
normal align=center>0.8～1.5
normal align=center>≥2
normal align=center>碱性长石花岗岩类矿床
normal align=center>≥1.0
normal align=center>0.015～
normal align=center>0.018%
normal align=center>0.008～
normal align=center>0.01%
normal align=center>0.024～
normal align=center>0.028%
normal align=center>0.012～
normal align=center>0.015%
normal align=center>1.5～2.0
normal align=center>≥4
normal align=center>风化壳矿床（褐钇铌矿或铌铁矿）
normal align=center>—
normal align=center>0.008～
normal align=center>0.010%
normal align=center>重砂品位80～
normal align=center>100g/m3
normal align=center>0.016～
normal align=center>0.020%
normal align=center>重砂品位
normal align=center>250～
normal align=center>280g/m3
normal align=center>0.5～1.0
normal align=center>
normal align=center>原生铌矿
normal align=center>—
normal align=center>0.05～
normal align=center>0.06%
normal align=center>
normal align=center>0.08～
normal align=center>0.12%
normal align=center>
normal align=center>5.0
normal align=center>≥5
normal align=center>河流类砂矿床（铌铁矿或褐钇铌矿）
normal align=center>—
normal align=center>0.004～
normal align=center>0.006%
normal align=center>重砂品位
normal align=center>40g/m3
normal align=center>0.01～
normal align=center>0.012%
normal align=center>重砂品位
normal align=center>250g/m3
normal align=center>0.5
normal align=center>≥2