An investigation of sample 41647 from the Platinum Placer of Ugol'nyi Ruchei, Norilsk Cu–Ni deposit, Russia, stored in the systematic collection of the Fersman Mineralogical Museum, revealed that it contained a mineral that can be identified as the original stannopalladinite described in 1947. As the literature information on the latter is controversial, the mineral was re-investigated using modern analytical techniques. Stannopalladinite occurs as spherical and ovoid-shaped grains up to 0.08 mm, closely intergrown with tetraferroplatinum as part of flattened, prismatic crystals up to 6 mm long. The micro-indentation hardness of stannopalladinite (VHN, 30 g load) is 244 kg/mm2 (range 233–266, n = 4), corresponding to a Mohs hardness of 4. The calculated density is 9.781 g/cm3. In reflected light, stannopalladinite is pale pink. The bireflectance is noticeable only in oil immersion. In crossed nicols the mineral exhibits strong anisotropy with colour effects changing from reddish purple to greyish blue and polysynthetic twinning of grains. The reflectance curves show distinct anomalous dispersion. The chemical composition (wt.%, electron microprobe data, mean of 11 analyses) is: Cu 8.48, Pd 61.21, Pt 0.89, Sn 25.87, Pb 3.70, total 100.15. The empirical formula calculated on the basis of 4 atoms per formula unit is (Pd2.42Cu0.56Pt0.02)Σ3.00(Sn0.92Pb0.08)Σ1.00. The ideal chemical formula of stannopalladinite is therefore proposed as (Pd,Cu)3Sn instead of Pd3Sn2 used in the official IMA List of Minerals. The strongest powder X-ray diffraction lines are [dobs, Å (I, %) (hkl) ]: 2.292 (42) (231), 2.166 (100) (331), 2.034 (10) (710), 1.916 (15) (141) and 1.851 (15) (630). The powder X-ray data are indexed in the orthorhombic unit cell with a = 14.634(2), b = 8.5253(6), c = 4.5946(3) Å and V = 573.24(7) Å3 (Z = 8). Stannopalladinite can be reliably identified among all other minerals belonging to the binary Pd–Sn and ternary Pd–Cu–Sn systems by a combination of chemical, optical and X-ray data.

对来自俄罗斯诺里尔斯克铜镍矿床 Ugol'nyi Ruchei 的铂砂矿（保存在费斯曼矿物学博物馆的系统收藏中）的 41647 号样品进行的调查显示，它含有一种矿物，可以鉴定为原始锡钯矿，描述于1947 年。由于有关后者的文献信息存在争议，因此使用现代分析技术重新研究了该矿物。钯锡矿呈球形和卵形颗粒，最大可达 0.08 毫米，与四铁铂紧密共生，是扁平棱柱形晶体的一部分，最大长度可达 6 毫米。锡钯矿的微压痕硬度（VHN，30 g 负载）为 244 kg/mm 2（范围 233–266，n = 4），对应莫氏硬度为 4。计算出的密度为 9.781 g/cm 3。在反射光下，亚锡钯矿呈淡粉色。双反射仅在油浸时才明显。在交叉尼科尔矿物中，该矿物表现出强烈的各向异性，颜色效果从红紫色变为灰蓝色以及多合成晶粒孪晶。反射率曲线显示出明显的反常色散。化学成分（重量％，电子显微镜数据，11 次分析的平均值）为：Cu 8.48、Pd 61.21、Pt 0.89、Sn 25.87、Pb 3.70，总计 100.15。基于每个式单元4个原子计算的经验式为(Pd 2.42 Cu 0.56 Pt 0.02 ) Σ3.00 (Sn 0.92 Pb 0.08 ) Σ1.00。因此，建议锡钯矿的理想化学式为(Pd,Cu) 3 Sn，而不是官方IMA矿物清单中使用的Pd 3 Sn 2 。最强的粉末 X 射线衍射线为 [ d obs , Å ( I , %) ( hkl ) ]：2.292 (42) (231)、2.166 (100) (331)、2.034 (10) (710)、1.916 ( 15) (141) 和 1.851 (15) (630)。粉末 X 射线数据在正交晶胞中索引为a = 14.634(2)、b = 8.5253(6)、c = 4.5946(3) Å 和V = 573.24(7) Å 3 ( Z = 8)。通过结合化学、光学和 X 射线数据，可以在属于二元 Pd-Sn 和三元 Pd-Cu-Sn 系统的所有其他矿物中可靠地识别出亚锡钯矿。