Abstract The rhodonite-group mineral with the idealised, end-member formula MnMn4[Si5O15] and the crystal chemical formula VIIM(5)MnVIM(1–3)Mn3VIIM(4)Mn[Si5O15] (Roman numerals indicate coordination numbers) is defined as a valid mineral species named vittinkiite after the type locality Vittinki (Vittinge) mines, Isokyrö, Western and Inner Finland Region, Finland. Vittinkiite is an isostructural analogue of rhodonite, ideally CaMn4[Si5O15], with Mn2+ > Ca at the M(5) site. Besides Vittinki, vitiinkiite was found in more than a dozen rhodonite deposits worldwide, however, it is significantly less common in comparison with rhodonite. The mineral typically forms pink to light pink massive, granular aggregates and is associated with quartz, rhodonite, tephroite, pyroxmangite and Mn oxides. Vittinkiite is optically biaxial (+), with α = 1.725(4), β = 1.733(4), γ = 1.745(5) and 2Vmeas = 75(10)° (589 nm). The chemical composition of the holotype (wt.%, electron microprobe) is: MgO 0.52, CaO, 0.93, MnO 51.82, FeO 1.26, ZnO 0.11, SiO2 46.48, total 101.12. The empirical formula calculated based on 15 O apfu is Mn4.71Ca0.11Fe0.11Mg0.08Zn0.01Si4.99O15. Vittinkiite is triclinic, space group P$\bar{1}$, with a = 6.6980(3), b = 7.6203(3), c = 11.8473(5) Å, α = 105.663(3), β = 92.400(3), γ = 94.309(3)°, V = 579.38(7) Å3 and Z = 2. The crystal structure is solved on a single crystal to R1 = 3.85%. Polymorphism of MnSiO3 (rhodonite-, pyroxmangite-, garnet- and clinopyroxene-type manganese metasilicates) is discussed, as well as the relationship between vittinkiite and pyroxmangite, ideally Mn7[Si7O21], and the application of infrared spectroscopy for the identification of manganese pyroxenoids.

中文翻译：

---

Vittinkiite，MnMn4[Si5O15]，具有悠久历史的蔷薇辉石族成员：作为矿物种类的定义

摘要 具有理想化端元式 MnMn4[Si5O15] 和晶体化学式 VIIM(5)MnVIM(1-3)Mn3VIIM(4)Mn[Si5O15]（罗马数字表示配位数）的菱锰矿族矿物被定义作为一种有效的矿物物种，以芬兰西部和内芬兰地区的伊索克罗 (Isokyrö) 的 Vittinki (Vittinge) 矿山的类型产地命名为 vittinkiite。Vittinkiite 是菱锰矿的同构类似物，理想情况下为 CaMn4[Si5O15]，在 M(5) 位点具有 Mn2+ > Ca。除了 Vittinki，vitinkiite 在世界范围内有十几个玫瑰石矿床中被发现，然而，与玫瑰石相比，它的普遍性要低得多。该矿物通常形成粉红色至浅粉红色的块状粒状聚集体，并与石英、红锰矿、温铁矿、辉锰矿和锰氧化物伴生。Vittinkiite 是光学双轴 (+)，α = 1.725(4)，β = 1.733(4), γ = 1.745(5) 和 2Vmeas = 75(10)° (589 nm)。正模的化学成分（wt.%，电子探针）为：MgO 0.52，CaO，0.93，MnO 51.82，FeO 1.26，ZnO 0.11，SiO2 46.48，共101.12。基于 15 O apfu 计算的经验公式为 Mn4.71Ca0.11Fe0.11Mg0.08Zn0.01Si4.99O15。Vittinkiite 是三斜晶系，空间群 P$\bar{1}$，a = 6.6980(3), b = 7.6203(3), c = 11.8473(5) Å, α = 105.663(3), β = 92.400(3) )，γ = 94.309(3)°，V = 579.38(7) Å3 和 Z = 2。晶体结构在单晶上求解，R1 = 3.85%。讨论了 MnSiO3（菱锰矿、辉锰矿、石榴石和单斜辉石型偏硅酸锰）的多晶型，以及维金镁石和辉锰矿（理想情况下为 Mn7[Si7O21]）之间的关系，以及红外光谱在识别锰辉石中的应用. 733(4), γ = 1.745(5) 和 2Vmeas = 75(10)° (589 nm)。正模的化学成分（wt.%，电子探针）为：MgO 0.52，CaO，0.93，MnO 51.82，FeO 1.26，ZnO 0.11，SiO2 46.48，共101.12。基于 15 O apfu 计算的经验公式为 Mn4.71Ca0.11Fe0.11Mg0.08Zn0.01Si4.99O15。Vittinkiite 是三斜晶系，空间群 P$\bar{1}$，a = 6.6980(3), b = 7.6203(3), c = 11.8473(5) Å, α = 105.663(3), β = 92.400(3) )，γ = 94.309(3)°，V = 579.38(7) Å3 和 Z = 2。晶体结构在单晶上求解，R1 = 3.85%。讨论了 MnSiO3（菱锰矿、辉锰矿、石榴石和单斜辉石型偏硅酸锰）的多晶型，以及维金镁石和辉锰矿（理想情况下为 Mn7[Si7O21]）之间的关系，以及红外光谱在识别锰辉石中的应用. 733(4), γ = 1.745(5) 和 2Vmeas = 75(10)° (589 nm)。正模的化学成分（wt.%，电子探针）为：MgO 0.52，CaO，0.93，MnO 51.82，FeO 1.26，ZnO 0.11，SiO2 46.48，共101.12。基于 15 O apfu 计算的经验公式为 Mn4.71Ca0.11Fe0.11Mg0.08Zn0.01Si4.99O15。Vittinkiite 是三斜晶系，空间群 P$\bar{1}$，a = 6.6980(3), b = 7.6203(3), c = 11.8473(5) Å, α = 105.663(3), β = 92.400(3) )，γ = 94.309(3)°，V = 579.38(7) Å3 和 Z = 2。晶体结构在单晶上求解，R1 = 3.85%。讨论了 MnSiO3（菱锰矿、辉锰矿、石榴石和单斜辉石型偏硅酸锰）的多晶型，以及维金镁石和辉锰矿（理想情况下为 Mn7[Si7O21]）之间的关系，以及红外光谱在识别锰辉石中的应用. 745(5) 和 2Vmeas = 75(10)° (589 nm)。正模的化学成分（wt.%，电子探针）为：MgO 0.52，CaO，0.93，MnO 51.82，FeO 1.26，ZnO 0.11，SiO2 46.48，共101.12。基于 15 O apfu 计算的经验公式为 Mn4.71Ca0.11Fe0.11Mg0.08Zn0.01Si4.99O15。Vittinkiite 是三斜晶系，空间群 P$\bar{1}$，a = 6.6980(3), b = 7.6203(3), c = 11.8473(5) Å, α = 105.663(3), β = 92.400(3) )，γ = 94.309(3)°，V = 579.38(7) Å3 和 Z = 2。晶体结构在单晶上求解，R1 = 3.85%。讨论了 MnSiO3（菱锰矿、辉锰矿、石榴石和单斜辉石型偏硅酸锰）的多晶型，以及辉石矿和辉锰矿（理想情况下为 Mn7[Si7O21]）之间的关系，以及红外光谱在锰辉石鉴定中的应用. 745(5) 和 2Vmeas = 75(10)° (589 nm)。正模的化学成分（wt.%，电子探针）为：MgO 0.52，CaO，0.93，MnO 51.82，FeO 1.26，ZnO 0.11，SiO2 46.48，共101.12。基于 15 O apfu 计算的经验公式为 Mn4.71Ca0.11Fe0.11Mg0.08Zn0.01Si4.99O15。Vittinkiite 是三斜晶系，空间群 P$\bar{1}$，a = 6.6980(3), b = 7.6203(3), c = 11.8473(5) Å, α = 105.663(3), β = 92.400(3) )，γ = 94.309(3)°，V = 579.38(7) Å3 和 Z = 2。晶体结构在单晶上求解，R1 = 3.85%。讨论了 MnSiO3（菱锰矿、辉锰矿、石榴石和单斜辉石型偏硅酸锰）的多晶型，以及维金镁石和辉锰矿（理想情况下为 Mn7[Si7O21]）之间的关系，以及红外光谱在识别锰辉石中的应用.