Jasonsmithite (IMA2019-121), Mn42+ZnAl(PO4)4(OH)(H2O)7·3.5H2O, is a pegmatite-phosphate mineral from the Foote Lithium Company mine, Kings Mountain district, Cleveland County, North Carolina, U.S.A. It is interpreted as having formed by late-stage, low-temperature hydrothermal alteration. Crystals are colorless to light brown, slightly flattened prisms to about 1 mm in length with wedge-shaped terminations. The mineral is transparent with vitreous luster, white streak, Mohs hardness 2, brittle tenacity, irregular fracture, and perfect {001} cleavage. The density is 2.63(2) g/cm3. Jasonsmithite is biaxial (–), with α = 1.561(2), β = 1.580(2), γ = 1.581(2), measured in white light. The 2V is 25(5)° and dispersion is r < ν moderate. The optical orientation is Y = b, X ^ c = 18° in obtuse β. The Raman spectrum is dominated by vibrational modes of PO4 and ZnO4 tetrahedra, AlO6 and MnO6 octahedra, and OH groups. Electron microprobe analyses gave the empirical formula (Mn3.09Fe0.87)Σ3.96Zn1.05Al0.98(PO4)4(OH)(H2O)7·3.5H2O. The mineral is monoclinic, P21/c, a = 8.5822(3), b = 13.1770(6), c = 20.3040(14) Å, β = 98.485(7)°, V = 2271.0(2) Å3, and Z = 4. The structure (R1 = 0.0443 for 3685 I>2σI reflections) contains zigzag chains of edge-sharing MnO6 octahedra that corner-link to adjacent chains and to PO4 tetrahedra to form sheets, which are decorated by ZnO4 tetrahedra. The sheets are linked to one another via dimers of AlO6 octahedra, forming a framework with large channels containing H2O groups. With H2O groups removed, the framework has a void space of 70.2% per unit cell, and a framework density of 14.5 polyhedral atoms/1000 Å3, which would place jasonsmithite among the most porous minerals.

中文翻译：

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Jasonsmithite，一种具有复杂微孔骨架的新型磷酸盐矿物，来自美国北卡罗来纳州的Foote矿

Jasonsmithite（IMA2019-121），Mn42 + ZnAl（PO4）4（OH）（H2O）7·3.5H2O是来自美国北卡罗来纳州克利夫兰县金斯山区的Foote Lithium Company矿的伟晶石磷酸盐矿物认为其是由后期低温热液蚀变形成的。晶体为无色至浅棕色，棱柱略微扁平，长约1毫米，带有楔形终端。矿物是透明的，具有玻璃光泽，白色条纹，莫氏硬度2，脆性，不规则断裂和完美的{001}裂解。密度为2.63（2）g / cm3。膨润石为双轴（–），在白光下测得的α= 1.561（2），β= 1.580（2），γ= 1.581（2）。2V为25（5）°，色散为r <ν中等。光学取向为Y = b，X ^ c = 18°（钝角β）。拉曼光谱受PO4和ZnO4四面体，AlO6和MnO6八面体以及OH基团的振动模式支配。电子探针分析给出了经验公式（Mn3.09Fe0.87）Σ3.96Zn1.05Al0.98（PO4）4（OH）（H2O）7·3.5H2O。矿物为单斜晶系，P21 / c，a = 8.5822（3），b = 13.1770（6），c = 20.3040（14）Å，β= 98.485（7）°，V = 2271.0（2）Å3，Z = 4.结构（对于3685 I>2σI反射，R1 = 0.0443）包含边缘共享的MnO6八面体的Z字形链，该角形链接到相邻的链和PO4四面体以形成薄片，并用ZnO4四面体装饰。这些薄片通过AlO6八面体的二聚体彼此连接，形成一个带有包含H2O基团的大通道的框架。除去H2O基团后，骨架的每单位晶格的空隙空间为70.2％，骨架密度为14.5多面体原子/ 1000Å3，