Five samples of differently colored sodalite-group minerals from gem lazurite deposits were studied by means of electron microprobe and wet chemical analyses, infrared, Raman, electron spin resonance (ESR) and UV-Visible spectroscopy, and X-ray diffraction. Various extra-framework components (SO₄^2–, S^2– and Cl^– anions, S₃^·–, S₂^·– and SO₃^·– radical anions, H₂O, CO₂, COS, cis- as well as trans- or gauche-S₄ neutral molecules have been identified. It is shown that S₃^·– and S₄ are the main blue and purple chromophores, respectively, whereas the S₂^·– yellow chromophore and SO₃^·– blue chromophore play a subordinate role. X-ray diffraction patterns of all samples of sodalite-group minerals from lazurite deposits studied in this work contain superstructure reflections which indicate different kinds of incommensurate modulation of the structures.

中文翻译：

---

宝石Lazurite矿中方钠石类矿物的光谱学和晶体化学特征

通过电子微探针和湿化学分析，红外，拉曼，电子自旋共振（ESR）和紫外可见光谱以及X射线衍射研究了五个来自宝石天青石矿床的不同颜色的方钠石族矿物样品。各种框架外成分（SO ₄ ^2–，S ^2–和Cl ^–阴离子，S ₃ ^{· –}，S ₂ ^{· –}和SO ₃ ^{· –}自由基阴离子，H ₂ O，CO ₂，COS，顺式以及反式或薄纱-S ₄已经鉴定出中性分子。结果表明，S ₃ ^·和^– S ₄分别是主要的蓝色和紫色发色团，而S ₂ ^{· –}黄色发色团和SO ₃ ^{· –}蓝色发色团起次要作用。在这项工作中研究的来自天青石矿床的方钠石族矿物的所有样品的X射线衍射图谱均包含超结构反射，表明结构的各种不规则调节。