Luboržákite, ideally Mn2AsSbS5, is a new mineral from the Vorontsovskoe gold deposit, Northern Urals, Russia. It forms long-prismatic crystals up to 70 × 20 μm and anhedral grains of the same size embedded in the matrix of Mn-bearing dolomite and Mn-bearing calcite. Associated minerals include pyrite, orpiment, realgar, stibnite, aktashite, alabandite, boscardinite, chabournéite, coloradoite, clerite, écrinsite, gold, routhierite, sphalerite and twinnite. Luboržákite is black, opaque with metallic lustre and has a black streak. It is brittle and has an uneven fracture. No cleavage and parting have been observed. Mohs hardness is 4–4½. Dcalc = 4.181 g cm–3. In reflected light, luboržákite is tin-white, weakly anisotropic with rotation tints varying from dark grey to grey. The chemical composition of luboržákite is (wt.%; electron microprobe, WDS mode): Mn 21.23, Cu 0.29, Ag 0.56, Pb 1.90, As 15.25, Sb 27.03, S 33.23, total 99.49. The empirical formula based on the sum of all atoms = 9 apfu is Mn1.86Pb0.04Ag0.03Cu0.02As0.98Sb1.07S5.00. The new mineral is monoclinic, space group C2/m with a = 12.5077(6), b = 3.8034(2), c = 16.0517(8) Å, β = 94.190(4)°, V = 761.57(6) Å3 and Z = 4. The crystal structure of luboržákite was solved from the single-crystal X-ray diffraction data to R = 0.0383 for 712 observed reflections with I > 3σ(I). Luboržákite is a new member of the heterochemical isostructural series of ‘unit-cell twinned’ structures, named the pavonite series. The new mineral honours Lubor Žák, a prominent Czech crystallographer and the professor of the Charles University in Prague, Czech Republic.

Luboržákite，理想的是Mn 2 AsSbS 5，是一种来自俄罗斯北部乌拉尔Vorontsovskoe金矿的新矿物。它形成高达70×20μm的长棱柱状晶体，并在含锰白云石和含锰方解石的基质中嵌入相同尺寸的无规颗粒。伴生矿物包括黄铁矿，雌黄铁矿，雄黄，辉锑矿，钾铁矿，方铁矿，博斯卡丁岩，菱铁矿，科罗拉多石，绿铅矿，绿铁矿，金，针铁矿，闪锌矿和菱镁矿。Luboržákite黑色，不透明，具有金属光泽，并具有黑色条纹。它易碎，断裂不均匀。没有观察到分裂和分裂。莫氏硬度为4–4½。D calc = 4.181 g厘米–3。在反射光下，卢博扎金岩为锡白色，各向异性很弱，旋转色度从深灰色到灰色不等。硼锌矿的化学成分为（wt。％；电子探针，WDS模式）：Mn 21.23，Cu 0.29，Ag 0.56，Pb 1.90，As 15.25，Sb 27.03，S 33.23，总计99.49。基于所有原子的总和= 9 apfu的经验公式为Mn 1.86 Pb 0.04 Ag 0.03 Cu 0.02 As 0.98 Sb 1.07 S 5.00。新矿物为单斜晶，空间群C 2 / m，a = 12.5077（6），b = 3.8034（2），c = 16.0517（8）Å，β= 94.190（4）°，V= 761.57（6）3和ž = 4luboržákite的晶体结构从单晶X射线衍射数据求解以[R = 0.0383为712层观察到的反射与我>3σ（我）。Luboržákite是“单元孔孪晶”结构的杂化同构结构系列的新成员，称为pavonite系列。新矿物授予捷克著名晶体学家，捷克共和国查尔斯大学教授卢博·扎克（LuborŽák）荣誉。