Chemical and crystallographic characteristics and growth factors of calcium carbonate gallstones.

1)用红外分光光度法和X射线衍射法进行了晶体结构研究。。(1)碳酸钙结石中，文石最常见，占90.6%，方解石占62.5%。28.1%的样品中甚至含有球石。在自然界中，最稳定的方解石是最常见的，但在我们的CaCO_3-胆石系列中以文石为主。(2)在有肝硬变的黑色结石中，方解石占全部病例的75%，而非肝硬变的结石中，文石占75%。(3)在胰腺结石中，4例中有3例有方解石。。钙质烧结矿在500ﾟC时完成了方解石的转化，而在胆石中只有8%转化为方解石，600ﾟC时为56%，甚至在650ﾟ时也有69%转化为方解石。合成碳酸钙的结晶组成随母液中钙离子浓度的不同而变化。当初始钙离子浓度小于140ppm，不加胆粉时，只有文石析出。4)无机和有机离子组分。。在碳酸钙胆石系列中，钠、钾和镁的平均含量分别为0.66%、0.07%和0.09%。文石组的镁离子含量有减少的趋势。有机成分为17.8%。5)认为共存物质和环境因素可能控制结晶，有机物质可能导致结晶稳定性。

1) Crystallographic studies by Infrared-spectrophotometry and X-ray diffractometry. . .(1) In calcium-carbonate gallstones, aragonite was most commonly found, with an occurrence rate of 90.6%, and that of calcite was 62.5%. Even vaterite was found In 28.1%. In nature, the most stable calcite is most commonly found but in our CaCo_3-Gallstone series aragonite was dominant.(2) In black stones with liver cirrhosis, calcite was found In all cases, but stones without liver cirrhosis aragonite was found in 75%.(3) In pancreatic stones calcite was found In 3 out of 4 cases.2) Differential Thermal Analysis (DTA) of CaCO_3, aragonite fors. . .Calcareous sinter completed its conversion into calcite at 500ﾟC, while In gallstones only 8% transformed into calcite, 56% at 600ﾟC and 69% even at 650ﾟC.3) Experimental Production of CACO_3. . .The crystalline compositions of synthesized calcium carbonate changed according to the calcium ion concentration of the mother solution. When the initial calcium ion concentration was less than 140ppm, and when no bile powder was added only aragonite was precipitated.4) Inorganic and Organic Ion Components. . .In calcium carbonate gallstone series, Na, K. and Mg averaged 0.66%, 0.07%, and 0.09%, respectively. Aragonite group had a tendency to be less in Mg-ion. Organic component was 17.8%.5) It was considered that coexisting materials and environmental factors may control the crystallization, and the organic material may cause the crystallographic stability.