【摘要】 <正> 高板河矿床位于河北省兴隆县,该矿是以锌黄铁矿为主的我国北方典型的层控多金属硫化物矿床。由于该矿规模大、分布广,在成矿特征方面具有一定的代表性,因此,长期以来,在矿床特征,成矿作用及矿床成因方面曾引起有关方面注目并对矿区有过较高程度的研究。由于成矿作用的复杂,在矿床成因方面一直存在着不同的争论。更多还原

【Abstract】 The Gaobanhe deposit in Xinglong County of Hebei Province is a typical strata-bound multi-metal sulphide deposit mainly consisting of zinic pyrite.There, many kinds of fabrics in the deposit were found, indicating complicated origin. It is particularly significant to have found the berry-like texture and the berry-like lump, and the related textures in the ores with the laminated and banded structure. Syngenetic structures found include lamination, banded structure, colloid-form structure, etc. Syngenetic textures include spherical texture, ringlike texture, radial texture, etc.The structures formed during early diagenesis are as follows; multi-cylindrical spherical and lump structures, and the textures formed under the diagenetic condition include berry-li ke,-vravy, euhedral, subhedral textures.The late diagenetic an d epigenetic fabrics mainly occur in the galena-sphalerite ores, including vein-like, disseminated, brecciated structutes and metasomatic skeletal, metasomatic ringlike and metasomatic drop-like textures.Pyrites are very small, generally smaller than 10μ, and the ringlike, spherical and berry-like pyrites smaller than 10Cμ. X-ray analysis reveals that the fabric of the ores are correlated -with the factors of crystal cells. In conclution, pyrites might pass through the four stages : colloid→meta-colloid→subhedral→euhedral.The fabrics of ores of the Gaobanhe deposit indicate the coexistence of syn-genetic and epigenetic processes. Pyrites are the products of syngenesis, and galena and sphalerite the products of late diagenesis and epigenesis.更多还原