金矿盲矿预测的原生晕轴向“反(向)分带”和地化参数轴向“转折”准则

THE STANDARDS OF THE OPPOSITE DIRECTION ZONING OF PRIMARY HALO AND `THE TURNING POINTS' OF GEOCHEMICAL PARAMETERS IN THE DIRECTION OF THE AXIS IN THE BLIND GOLD DEPOSITS

金矿成矿具有多期多阶段叠加成矿成晕的特点。中国金矿床原生晕轴向从上到下具有Ｂ－Ａｓ－Ｈｇ－Ｆ－Ｓｂ－Ｂａ→Ｐｂ－Ａｇ－Ａｕ－Ｚｎ－Ｃｕ→Ｗ－Ｂｉ－Ｍｏ－Ｍｎ－Ｎｉ－Ｃｄ－Ｃｏ－Ｔｉ正向分带序列。“反分带”序列的出现，说明有另一阶段形成的矿体头部或前缘晕的叠加，指示矿体向深部还有很大延伸或有第２个盲矿存在。矿体轴向地球化学参数在连续上升或下降时发生“转折”，指示矿体向下延伸较大；在矿体尾部及尾晕出现“转折”，指示深部还有盲矿存在。

There are some features forming ore and halo for several periods and times in the gold deposits. The primary halo zoning in its axis direction is usually a straight sequence as follows: B-As-Hg-F-Sb-B→Pb-Ag-Au-Zn-Cu→W-Bi-Mo-Mn-Ni-Cd-Co-Ti from up to down in each gold deposit in China. When an unusual zoning sequence in opposite direction is fined some where which means that there must be a foward position halo of another orebody and direct the orebody extending more much or being an other blind one at the depths. If the geochemical parameters appeare turning points during their going up or taking down in the gold orebody. It would be directed that the orebody may alongate a lot at its depths. When the turning points appeare at the end of the orebody or the primary halo which directs that there is a blind orebody under it.