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在对辽宁建昌县八家子矿区吴家屯铅锌黄铁矿－硫锰矿矿床进行研究的过程中，首次发现三斜锰辉石，它与锰铝榴石、硫锰矿、黄铁矿等共生，主要产出在铅锌黄铁矿体、硫锰矿体和近矿矽卡岩中。该区的三斜锰辉石为玫瑰红色和暗红褐色，短柱状，两组解理，折射率Ｎｇ＝１．７４９～１．７５３，Ｎｐ＝１．７３７～１．７４８，Ｎｍ＝１．７３４～１．７４１；＋２Ｖ＝４３°；ＤＯ＝３．７８６～３．７９２；ＤＣ＝３．７９～３．８３。化学成分除Ｓｉ外主要为Ｍｎ和Ｆｅ，矿物化学式：（Ｃａ０．２７～０．４３Ｍｇ０．４３～０．５７）０．７５～１．００（Ｍｎ４．９４～５．７７Ｆｅ０．３６～１．３６）６．１６～６．３７［Ｓｉ６．８６～７Ｏ２１］。晶体结构属三斜晶系，玫瑰红色三斜锰辉石的Ｘ射线衍射主要粉晶谱线：３．１３３（１００），２．９６０（４２），２．５０２（１３），２．１８３（１８），１．９１９（４５）。矿物成因研究表明，三斜锰辉石主要为岩浆岩与含锰白云岩接触交代作用的产物，具明显的成因指示意义
In the process of researching the lead-zinc pyrite-sulfur manganese ore deposit in Wujiatun, Bajiazi Mining Area, Jianchang County, Liaoning Province, the triphelite pyroxene was found for the first time. It is symbiotic with such as chalcopyrite, pyrite and pyrite, The main outputs are in lead-zinc pyrite, sulfur-manganese ore bodies and near-mine skarn. The triclinic pyroxenes in this area are rose-red and dark reddish brown with a short columnar shape. The two groups are cleaved with refractive indices of Ng = 1.749-1.753, Np = 1.737-1.748 and Nm = 1. 734 ~ 1.741; + 2V = 43 °; DO = 3.786 ~ 3.792; DC = 3.79 ~ 3.83. In addition to the chemical composition of Si and Mn are mainly outside the Fe, chemical formula: (Ca0.27 ~ 0.43Mg0.43 ~ 0.57) 0.75 ~ 1.00 (Mn4.94 ~ 5.77Fe0.36 ~ 1.36 ) 6.16 ~ 6.37 [Si6.86 ~ 7O21]. The crystal structure is triclinic. The main pink crystal of X-ray diffraction of triclinic pyroxene is 3.133 (100), 2.960 (42), 2.502 (13), 2.183 ( 18), 1.919 (45). The study on the genesis of minerals shows that the triclinopyrite is mainly the product of the contact of magmatic rocks and manganese-bearing dolomites, with obvious indications