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日本菱刈浅成热液冰长石-石英脉型金矿中冰长石呈细粒状, 富K(Or = 94.63), 与石英密切共生.采用X射线衍射、 红外光谱和核磁共振等方法对它进行了结构态研究, 结果表明, 该冰长石属高透长石并含三斜晶畴. Al的占位度2t1 = 0.60, 红外有序度θ = 0.15. 其 29Si核磁谱呈现为一具有3个分叉的宽峰, 相应化学位移为- 94.9 ×10-6, - 96.7 ×10-6和 - 99.9 ×10-6. 此种形式的天然透长石29Si核磁谱过去未见有报道. 27Al核磁谱为一向低频扩展的不对称峰, 峰值为58.7 × 10?6. 该冰长石是热液发生强烈沸腾时, 在快速变化的条件下, 从过饱和溶液中迅速结晶出来的产物.
In Japan Linggari shallow hydrothermal ice-feldspar - quartz vein type gold deposits, the feldspar is fine-grained and rich in K (Or = 94.63), closely interbedded with quartz. X-ray diffractometry, infrared spectroscopy and nuclear magnetic resonance The results show that the feldspar belongs to the high permeability feldspar and contains triclinic domains.The occupancy of Al is 2t1 = 0.60 and the degree of infrared ordering is θ = 0.15.The 29Si NMR spectrum shows that 3 broad-bifurcated peaks with corresponding chemical shifts of -94.9 × 10-6, -96.7 × 10-6 and -99.9 × 10-6. 29Si NMR spectra of this type of natural stone are not reported in the past. The 27Al-NMR spectrum is a low-frequency extended asymmetric peak with a peak value of 58.7 × 10-6. The ice feldspar is a product that crystallizes rapidly from supersaturated solutions under rapidly changing conditions during intense boiling of hydrothermal fluids.