Galeaclolusite, [Al6(AsO4)3(OH)9(H2O)4]⋅8H2O, is a new secondary hydrated aluminium arsenate mineral from Cap Garonne, Var, France. It forms crusts and spheroids of white fibres up to 50 μm long by 0.4 μm wide and only 0.1 μm thick. The fibres are elongated along [001] and flattened on (100). The calculated density is 2.27 g⋅cm–3. Optically, galeaclolusite is biaxial with α = 1.550(5), β not determined, γ = 1.570(5) (white light) and partial orientation: Z = c (fibre axis). Electron microprobe analyses coupled with crystal structure refinement results gives an empirical formula based on 33 O atoms of Al5.72Si0.08As2.88O33H34.12. Galeaclolusite is orthorhombic, Pnma, with a = 19.855(4), b = 17.6933(11), c = 7.7799(5) Å, V = 2733.0(7) Å3 and Z = 4. The crystal structure of galeaclolusite was established from its close relationship to bulachite and refined using synchrotron powder X-ray diffraction data. It is based on heteropolyhedral layers, parallel to (100), of composition Al6(AsO4)3(OH)9(H2O)4 and with H-bonded H2O between the layers. The layers contain [001] spiral chains of edge-shared octahedra, decorated with corner-connected AsO4 tetrahedra, that are the same as in the mineral liskeardite.

Galeaclolusite，[铝6（ASO 4）3（OH）9（H 2 O）4 ]⋅8H 2 O，距离Cap加龙省，VAR，法国新的辅助水合铝砷酸盐矿物。它形成白色纤维的结壳和球状体，长达50μm，宽0.4μm，厚仅为0.1μm。纤维沿[001]伸长，并在（100）上变平。所计算的密度是2.27g⋅cm -3。从光学上讲，钙铝镁矾石是双轴的，α= 1.550（5），β未确定，γ= 1.570（5）（白光），部分取向：Z = c（光纤轴）。电子探针分析和晶体结构的细化结果给出了基于Al 5.72 Si 0.08 As 2.88 O 33 H 34.12的33个O原子的经验公式。Galeaclolusite为斜方晶，晶Pnma，具有一个= 19.855（4），b = 17.6933（11），C ^ = 7.7799（5）A，V = 2733.0（7）3和ž = 4从建立galeaclolusite的晶体结构它与鳞片石的密切关系，并使用同步加速器粉末X射线衍射数据精制。它基于成分（Al）平行于（100）的杂多面体层6（ASO 4）3（OH）9（H 2 O）4，并与H-键合的H 2澳层之间。这些层包含[001]边缘共享的八面体的螺旋链，装饰有角连接的AsO 4四面体，与矿物锂硅钙石中的相同。