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福建省的主要铁矿,多位于下石炭统林地组碎屑岩之上,中石炭统黄龙组—下二迭统栖霞组灰岩之下。这种以层控为特征,以龙岩马坑矿区为代表的铁矿,统称为“马坑式”铁矿。对其成因、控矿因素,目前存在各种不同的看法,但共同的意见是:铁矿具有一定的层位。至于该矿的成矿时代,由于主要矿区矿层顶底板普遍强烈矽卡岩化、大理岩化,难
The major iron mines in Fujian Province are mostly located above the clastic rocks of the Lower Carboniferous Woodland Group and under the limestone of the Middle Carboniferous Huanglong Formation - Lower Permian Qixia Formation. This layer control is characterized by Longyan Ma Hang mining area represented by the iron ore, collectively referred to as “Ma Hang type” iron ore. There are various opinions on its causes and ore-controlling factors. However, the common opinion is that iron ore has a certain level. As for the mine’s mineralization era, due to the roof and floor of the main mining area generally strong skarnization, marbleification, hard