The elastic behavior and the structural evolution at high pressure of a natural Ca-laumontite and Ca-leonhardite, the partially dehydrated form of Ca-laumontite, have been investigated by in situ single-crystal synchrotron X-ray diffraction up to 2.7 GPa and 7.5 GPa, respectively, using a diamond anvil cell. Despite no phase transitions have been observed within the P-range investigated, an anomalous stiffening of the structure along the b crystallographic axis occurs at about 2.1 GPa in Ca-laumontite and 2.4 GPa in Ca-leonhardite. The isothermal bulk elastic parameters of Ca-laumontite, refined by a second order Birch–Murnaghan equation of state (BM-EoS) fit, are: V₀ = 1393.9(6) ų and K_V0 = 54.8(10) GPa; whereas the isothermal bulk elastic parameters of Ca-leonhardite, refined by a third order BM-EoS fit, are: V₀ = 1348(1) ų, K_V0 = 36(1) GPa and K_V’ = 2.4(3). The hydration process, at ambient P-T conditions, of Ca-leonhardite has also been studied by means of in-situ single crystal X-ray diffraction in several H₂O-based mixtures. The results show that the hydration process is influenced by the fraction of H₂O in the aqueous mixtures in which leonhardite is immersed, and an almost linear correlation between the occupancy of the crystallographic W1 site and the unit-cell volume has been found. The structure deformation mechanisms that govern the compression of Ca-laumontite and Ca-leonhardite at the atomic scale, as well as those related to the hydration process of Ca-leonhardite, are described.

通过原位单晶同步加速器X射线衍射研究了高达2.7 GPa和7.5的天然Ca-月桂石和Ca-leonhardite（钙月桂石的部分脱水形式）的弹性行为和高压下的结构演化。GPa分别使用钻石砧细胞。尽管在所研究的P范围内未观察到相变，但沿b结晶轴方向的结构异常硬化发生在钙-月桂石中约2.1 GPa，钙-硬石中约2.4 GPa。钙浊沸石的等温体积弹性参数，由状态的二阶桦木-Murnaghan状态方程（BM-EOS）配合，精制为：V ₀  = 1393.9（6）³和K _{V 0}  = 54.8（10）GPa; 而钙leonhardite的等温体积弹性参数，由三阶BM-EOS适合，精制为：V ₀  = 1348（1）埃³，ķ _{V 0}  = 36（1）GPA和ķ _V '  = 2.4（3 ）。还通过在几种基于H ₂ O的混合物中进行原位单晶X射线衍射研究了在环境PT条件下Ca-莱诺石的水合过程。结果表明，水合过程受H ₂含量的影响。在浸没了锂铁矿的水性混合物中存在O，并且已经发现晶体学W1位点的占有率与晶胞体积之间几乎呈线性相关。描述了在原子尺度上控制钙-月桂石和钙-锂硬石压缩的结构变形机制，以及与钙-锂硬岩水合过程有关的变形机制。