治岭头金（银）矿床含金黄铁矿成因矿物学研究

GENETIC MINERALOGY RESEARCHES ON THE GOLD-BEARING PYRITE FROM ZHILINGTOU GOLD(SILVER)DEPOSIT

治岭头金（银）矿的含金黄铁矿主要为立方体、五角十二面体的半自形－它形晶，颗粒大小为０．００３～３．０００ｍｍ。含Ｓｂ６５３～１８００ｇ／ｔ，Ａｒ５００ｇ／ｔ左右，ｍｃ。／ｍＮｉ为１．１，稀土元素含量１８ｇ／ｔ，稀土元素的配分模式与围岩次火山岩中的黄铁矿相似。这些标型特征表明其形成与火山热液作用有关，因此，该矿床应属火山热液型金（银）矿床。

The gold-bearing pyrites from Zhlingtou gold deposit are mainly cubic and pentagonal-dodecahedron hypautomorphic-allotriomorphic granular crystals with a diameter 0.003～3.000 mm,Their content of Sb is 653～1800g/t;As about 500 g/t;the mCo/mNi=1.1;∑mREE=18g/t.And the distribution model of their REE is corresponding to that of thepyrites developped in the host subvolcanics.All those typic characteristics suggest that theirgenesis is related with the field volcanic activities and the deposit belongs to the volcanic hy-drothermal gold ore deposit.