Chemistry Discipline, Faculty of Science and Technology, Queensland University of Technology, GPO Box 2434, Brisbane, Queensland 4001, Australia.
Spectrochim Acta A Mol Biomol Spectrosc. 2012 Jun;91:324-8. doi: 10.1016/j.saa.2012.02.007. Epub 2012 Feb 10.
Stringhamite CaCuSiO(4)·H(2)O is a hydrated calcium copper silicate and is commonly known as a significant 'healing' mineral and is potentially a semi-precious jewel. Stringhamite is a neosilicate with Cu(2+) in square planar coordination. Vibrational spectroscopy has been used to characterise the molecular structure of stringhamite. The intense sharp Raman band at 956 cm(-1) is assigned to the ν(1) (A(1g)) symmetric stretching vibration. Raman bands at 980, 997, 1061 cm(-1) are assigned to the ν(3) (A(2u), B(1g)) antisymmetric stretching vibrations. Splitting of the ν(3) vibrational mode supports the concept that the stringhamite SiO(4) tetrahedron is strongly distorted. The intense bands at 505 and 519 cm(-1) and at 570 cm(-1) are assigned to the ν(2) and ν(4) vibrational modes. The question arises as to whether the mineral stringhamite can actually function as a healing mineral. An estimation of the solubility product at pH<5 shows that the cupric ion can be released. The copper ion is a very powerful antibiological agent and thus the mineral stringhamite may well function as a healing mineral.
水钙铜硅石 (CaCuSiO(4)·H(2)O) 是一种含水的硅酸铜钙，通常被认为是一种重要的“治疗”矿物，并有潜力成为半宝石。水钙铜硅石是一种具有正方形配位的 Cu(2+) 的新硅酸盐。振动光谱已被用于表征水钙铜硅石的分子结构。956cm(-1)处的强尖锐拉曼带被分配给 ν(1)（A(1g)）对称伸缩振动。980、997 和 1061cm(-1)处的拉曼带被分配给 ν(3)（A(2u)，B(1g)）反对称伸缩振动。ν(3)振动模式的分裂支持水钙铜硅石 SiO(4)四面体强烈扭曲的概念。505 和 519cm(-1)处以及 570cm(-1)处的强带被分配给 ν(2)和 ν(4)振动模式。问题是矿物水钙铜硅石是否真的可以作为治疗矿物。在 pH<5 下对溶度积的估计表明，铜离子可以被释放。铜离子是一种非常强大的抗菌剂，因此水钙铜硅石很可能作为一种治疗矿物发挥作用。
