A rare indium-bearing mineral from the stratiform Czerniawa Zdrój-Krobica Sn deposit in the Sudetes (NE part of the Bohemian Massif) has been recognized in the qualitative-quantitative chemical composition studies of sulphide-cassiterite samples by electron microprobe (EMPA). This indium-bearing mineral occurs in the form of separate hipautomorphic microscopic grains (diameter 5–20 μm) and as intergrowths and disseminations in chalcopyrite. Observations indicate that this phase crystallized with the main generation of chalcopyrite, sphalerite and also with a younger generation of cassiterite in the mineral succession. The chemical composition of this mineral is as follows: S – 29.38–30.77 wt.%, Zn – 29.76–34.02 wt.%, In – 17.52–19.40 wt.%, Cu – 9.05–10.75 wt.%, Fe – 7.76–8.7 wt.% and Sn – 0.03–0.1 wt.%. Its calculated chemical formula is: (Zn_2.09In_0.67Cu_0.65Fe_0.64Cd_0.02)_∑=4.07 and it is characterized by enrichment of Zn with simultaneous depletion in Cu and Sn relative to the ideal chemical composition of sakuraiite – the most similar mineral in terms of chemical composition. In the light of our new data, it should be considered as a yet unnamed Zn-In-Cu-Fe sulphide mineral. In addition, coexisting sulphide minerals – chalcopyrite (max. 1580 ppm of In) and sphalerite (max. 1640 ppm of In) were identified as indium carriers

Sudetes（波希米亚地块的NE部分）中层状CzerniawaZdrój-KrobicaSn矿床中一种稀有的含铟矿物已通过电子微探针（EMPA）在定性定量的硫化物-锡石样品化学组成研究中得到认可。这种含铟矿物质以单独的髋同形微观晶粒（直径5-20μm）以及在黄铜矿中的共生和扩散形式出现。观察结果表明，该相与主要的黄铜矿，闪锌矿以及年轻的锡石在矿物序列中结晶。该矿物的化学成分如下：S – 29.38–30.77 wt。％，Zn – 29.76–34.02 wt。％，In – 17.52–19.40 wt。％，Cu – 9.05–10.75 wt。％，Fe – 7.76– 8.7 wt。％和Sn – 0.03-0.1 wt。％。其计算的化学式为：（Zn_2.09 In _0.67 Cu _0.65 Fe _0.64 Cd _0.02）_{∑ = 4.07}，其特征是相对于理想的化学成分-樱石，Zn富集，同时Cu和Sn中的锌和锌的消耗也相对减少。根据我们的新数据，应将其视为尚未命名的Zn-In-Cu-Fe硫化矿物。此外，还发现了同时存在的硫化物矿物–黄铜矿（最大1580 ppm的铟）和闪锌矿（最大1640 ppm的铟）作为铟载体