The (UTh)/He dating technique is widely used in studying the shallow-crustal geological processes including exhumation of orogenic belts, surface weathering, fault motion, topographic evolution. A reference material with homogeneous composition and highly reproducible (UTh)/He dates is crucial to get accurate and precise date results for the unknown samples. As the most commonly used reference material, the Durango apatite has its limitations such as heterogeneous distribution of parent isotopes and large date dispersion for different fragments. In order to overcome the shortcomings of Durango apatite and meet the increasing demand for reference material, we developed a new reference material, MK-1 apatite, which was collected from the Mogok metamorphic belt (MMB) of Myanmar, for the (UTh)/He community. In this study, we presented dating results of 191 apatite fragments in six different laboratories, which showed highly reproducible dates and Th/U ratios, with an average date of 18.01 ± 0.37 Ma (sd.) and Th/U ratio of 0.72 ± 0.06 (sd.) respectively. Combined with textural and compositional results in the previous study (Wu et al., 2019), we concluded that he MK-1 apatite could serve as a good new reference material for (UTh)/He geochronology. We use the weighted mean dates of 17.99 ± 0.02 Ma that obtained from six different laboratories as the intercalibrated dates for the new reference material.

（U Th）/ He测年技术被广泛用于研究浅层地壳的地质过程，包括造山带的掘出，地表风化，断层运动，地形演变。具有均匀成分和高度可重复（U Th）/ He日期的参考材料对于获得未知样品的准确和准确的日期结果至关重要。作为最常用的参考材料，杜兰戈磷灰石有其局限性，例如母体同位素的异质分布和不同碎片的大枣色散。为了克服杜兰戈磷灰石的缺点并满足对参考材料不断增长的需求，我们开发了一种新的参考材料MK-1磷灰石，该材料是从缅甸的Mogok变质带（MMB）收集的，用于（UTh）/他的社区。在这项研究中，我们提供了六个实验室中191个磷灰石碎片的测年结果，这些数据显示出高度可重复的日期和Th / U比，平均日期为18.01±0.37 Ma（标准差），Th / U比为0.72±0.06 （标准）。结合先前研究的质地和成分结果（Wu等人，2019），我们得出结论，他的MK-1磷灰石可以作为（U Th）/ He年代学的很好的新参考材料。我们使用从六个实验室获得的17.99±0.02 Ma加权平均日期作为新参考材料的相互校准日期。