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杨木杆硼矿位于辽宁省宽甸县，产出于古元古代南辽河群下部里尔峪岩组中，为一中型硼镁石型硼矿。矿体走向ＳＥ，倾向ＮＥ，倾角７０°～８０°，直接赋矿岩石为蛇纹岩、蛇纹石化大理岩，矿体顶板出现有热水沉积的电英岩。硼矿石主要由纤维硼镁石、板状硼镁石及蛇纹石、白云石等组成。常见的变余沉积及变质、交代等组构。硼矿石品位Ｂ２Ｏ３随ＭｇＯ含量增长先是稳步增长，然后在Ｂ２Ｏ３含量大于７％时，ＭｇＯ含量稳定在４５％～４８％范围内。矿石中富含Ｃｓ、Ｎｄ、Ｔａ、Ｓｎ、Ｃｄ等微量元素及Ｆ、ＣＨ４等挥发分，稀土总量从５．７３×１０－６～７０．９８×１０－６，具Ｅｕ负异常。δ１３Ｃ在－２．６‰～－１０．４‰，δ１１Ｂ在９．６‰～１１．１‰。杨木杆硼矿为受变质的与深源火山活动有关的热水沉积矿床，同时存在的蒸发气候条件提高了硼富集成矿的效率。
Poplar boron ore is located in Kuandian County, Liaoning Province, and is derived from a middle-type dolomite-type boron ore in the Leluyuyan Formation in the lower part of the Nanliaohe Group in the Paleoproterozoic. The ore body goes to SE with a tendency of NE and a dip angle of 70 ° ~80 °. The direct ore-hosting rocks are serpentinite and serpentinized marble, and hot-water-bearing quartzite appears on the top of the ore body. Boron ore mainly by the fiber boehmite, boehmite and serpentine, dolomite and other components. Common variable deposition and metamorphism, confiscation and other organizations. The B2O3 content of boron ore increases steadily with the increase of MgO content, and then the content of MgO stabilizes in the range of 45% ~ 48% when the content of B2O3 is more than 7%. The ore is rich in trace elements such as Cs, Nd, Ta, Sn and Cd, and volatile components such as F and CH4. The total amount of rare earth is from 5.73 × 10-6 to 70.98 × 10-6 with negative Eu anomalies. δ13C at -2.6 ‰ ~ -10.4 ‰, δ11B at 9.6 ‰ ~ 11.1 ‰. Poplar boron is a metamorphic hydrothermal sedimentary deposit associated with deep-source volcanic activity, while the existing evaporative climatic conditions increase the boron-enriched mineralization efficiency.