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文章回顾了导致Thomsom发现钠菱沸石的历史背景。许多矿物学参考书都援引Thompson(1807)的文章,但没有提到钠菱沸石被Thomson发现的那篇文章;此外,Thomson的拼法在许多倩况下是不正确的。钠菱沸石的历史需从它最初的发现回顾起。尽管Giuseppetti等研究了钠菱沸石的结构,但其化学上的特征与之并不对应。他们搜集了所有已知的化学分析结果并作了讨论,提供了两个新的分析结果,综合使用了重量法、比色法、原子吸收光谱和电子探针,它们证明了钠菱沸石含有2％重量的氟。在钠菱沸石中存在氟,这一发现在1860年就已报导过,但当时没有一定的数量。新的测定解开了钠菱沸石结构某些方面的一些疑问。钠菱沸石实测的密度为2.93～2.96(平均2.95)克/厘米~3,用经验公式以正方单位晶胞a=12.32、c=15.48A计算的密度为2.925克/厘米~3。钠菱沸石的实验式可写为: Na_(1.38)Ca_(6.0) (Ca_(0.37),K_(0.3),Fe_(0.08),Sr_(0.07),Mg_(0.05)∑0.70 Al_3.90 Si_(6.02)P_(0.54)O_(26.20)F_(1.06) C_(0.06) 而理论化学式是 Na_2Ca_(12)(Ca,K,Ee,Sr,Mg)_2Al_8Si_(12) (P,S_1~*)O_(52)F_2在此是假定1/4单位晶胞有27个(氧和氟)原子。本文还详细叙述了其矿物组合、光学性质、红外光谱及热学特征。
The article reviews the historical background that led Thomsom to discover gmelinite. Many of the mineralogy references cite Thompson’s (1807) article, but do not mention the article on which ghosting was discovered by Thomson; in addition, the spelling of Thomson is incorrect under many circumstances. The history of gmelinite needs to be reviewed from its original discovery. Although Giuseppetti et al. Studied the structure of gmelinite, its chemical character does not correspond to it. They gathered and discussed all the known chemical analysis results and provided two new analytical results using a combination of gravimetric methods, colorimetric methods, atomic absorption spectroscopy and electron probes that demonstrated that gmelinite contains 2 % By weight of fluorine. The presence of fluorine in gmelinite was reported in 1860, but it was not available at that time. The new assay opens up some questions about some aspects of gmelin structure. The measured gmelinite density was 2.93-2.96 (average 2.95) g / cm3, and the empirical density was 2.925 g / cm3 calculated using empirical formula unit cell a = 12.32 and c = 15.48A. The experimental results of gmelinite can be written as follows: Na_ (1.38) Ca_ (6.0) Ca_ (0.37) K_ (0.3) Fe_ (0.08) Sr_ (0.07) Mg_ (0.05) Σ0.70 Al_3.90 Si_ The theoretical chemical formula is Na_2Ca_ (12) (Ca, K, Ee, Sr, Mg) _2Al_8Si_ (12) (P, S_1 ~ *) O_ (6.02) P_ (0.54) O_ (26.20) F_ (1.06) C_ (0.06) 52) Here, F_2 assumes 27 atoms (oxygen and fluorine) per unit cell, and the mineral assemblages, optical properties, infrared spectra and thermal characteristics are also described in detail.