Pore‐scale mineral dissolution reactions are of fundamental importance for sustaining life and determining the fate of chemicals in Earth's near‐surface environments. However, experimental investigations are largely limited to macroscopic approaches due to difficulties in controlling and observing geochemical processes at the pore scale. Here, we present an experimental method using both femtosecond laser ablation and hydrofluoric (HF) etching techniques to fabricate reactive microdevices in a natural silicate mineral, anorthite. The femtosecond laser minimizes damage to the mineral during ablation and HF etching successfully removes a thin amorphous layer induced by laser irradiation. Anorthite dissolution rates under far‐from‐equilibrium conditions (10^−8.14 to 10^−8.43 mol m⁻² s⁻¹), quantified by total calcium flux from the microfluidic device, correspond to previous laboratory‐measured rates also measured under far‐from‐equilibrium conditions, thereby supporting the reactive mineral microdevice as a valuable tool for mineral dissolution studies.

中文翻译：

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斜长石长石微设备的制造：孔隙规模的矿物溶解研究的实验工具

孔隙大小的矿物溶解反应对于维持生命和确定地球近地表化学物质的命运至关重要。但是，由于在孔隙尺度上难以控制和观察地球化学过程，实验研究在很大程度上限于宏观方法。在这里，我们介绍了一种使用飞秒激光烧蚀和氢氟酸（HF）蚀刻技术制造天然硅酸盐矿物，钙长石中的反应性微器件的实验方法。飞秒激光最大程度地减少了烧蚀过程中对矿物的损害，HF蚀刻成功去除​​了激光辐照引起的薄非晶层。在远离平衡条件下（10 ^-8.14至10 ^-8.43  mol m的钙长石溶解速度）⁻²  s ^-1）（通过微流体装置的总钙通量量化）对应于以前的实验室测量速率，该速率也在远离平衡的条件下测量，从而支持了反应性矿物微装置作为矿物溶解研究的重要工具。