The spatial distribution of the Archean ultramafic rocks of Xiongershan area shows the characteristics of uneven zoning and various orientations with peridotite, pyroxinite, amphibolite as main rock types, altered strongly.
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Strongly altered mylonite is gold orebody and gold mineralized body.
强蚀变糜棱岩即为金矿体及金矿化体。
ZJS series of core barrels are developed to cope with strongly altered gold ore and body which is hard, brittle, of alternate hardness and difficult to core.
针对某含金矿地层蚀变强烈，岩矿层硬、碎、软硬不均、取心困难的特点，研制了ZJS系列钻具。
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