Aluminotaipingite-(CeCa), (Ce6Ca3)Al(SiO4)3[SiO3(OH)]4F3, is a new member of the cerite-supergroup minerals, whose general chemical formula is A9XM[TO3Ø]7Z3, (A = REE, Ca, Sr, Na and □; X = □, Ca, Na and Fe2+; M = Mg, Fe2+, Fe3+, Al and Mn; T = Si and P; Ø = O and OH; Z = □, OH and F). It was found in cavities of a leucogranitic orthogneiss at the Casette quarry, Montoso, Bagnolo Piemonte, Cuneo Province, Piedmont, Italy. Crystals of aluminotaipingite-(CeCa) are light pink to pink, transparent or semi-transparent, with a vitreous lustre. It forms pyramidal crystals up to 0.07 mm in size and observed forms are {0 0 1}, {1 0 $\bar{2}$}. The tenacity is brittle, no distinct cleavage is observed and the fracture is uneven. The mineral does not fluoresce in long- or short-wave ultraviolet light. The streak is white. Hardness (Mohs) = 5. The calculated density is 4.476 g cm–3.

The mineral is trigonal, space group R3c, with a = 10.658(3), c = 37.865(9) Å, V = 3725(2) Å3 and Z = 6. The eight strongest powder X-ray diffraction lines are [dobs, Å (I, %) (h k l)]: 8.38(29)(0 1 2), 4.499(28)(2 0 2), 3.282(41)(2 1 4), 2.936(100)(0 2 10), 2.816(51)(1 2 8), 2.669(37)(2 2 0), 2.207 (29)(3 0 12) and 1.935(35)(2 3 8). The structure was refined to R =0.0306 for 2297 reflections with I >2σ(I). The crystal structure of aluminotaipingite-(CeCa) contains two nine-fold coordinated sites (A1 and A2), which are occupied mainly by lanthanides, and a third nine-fold coordinated A3 site containing almost equal amounts of lanthanides and Ca. The X site is vacant and at the octahedral M site aluminium prevails over Fe3+. Among the three independent T sites, T2 belongs to a (SiO4)4– anion, whereas T1 and T3 belong to (SiO3OH)3– anions. Fluorine is involved in coordination with the A1 and A3 sites.

铝太平石-(CeCa)，(Ce 6 Ca 3 )Al(SiO 4 ) 3 [SiO 3 (OH)] 4 F 3 ，是硅藻土超族矿物的新成员，其化学通式为A 9 XM [ T O 3 Ø] 7 Z 3 , ( A = REE、Ca、Sr、Na 和 □；X = □、Ca、Na 和 Fe 2+；M = Mg、Fe 2+、Fe 3+、Al 和 Mn；T = Si 和 P；Ø = O 和 OH；Z = □、OH 和 F)。它是在意大利皮埃蒙特库内奥省巴尼奥洛皮埃蒙特蒙托索卡塞特采石场的浅色花岗岩正片麻岩洞中发现的。铝太平石（CeCa）晶体呈浅粉红色至粉红色，透明或半透明，具有玻璃光泽。它形成尺寸达 0.07 mm 的金字塔形晶体，观察到的形式为 {0 0 1}、{1 0 $\bar{2}$ }。韧性脆，未见明显解理，断口不均匀。该矿物在长波或短波紫外线下不会发出荧光。条纹是白色的。硬度（莫氏）= 5。计算出的密度为 4.476 g cm –3。

该矿物为三角晶系，空间群R 3 c，a = 10.658(3)、c = 37.865(9) Å、V = 3725(2) Å 3和Z = 6。 八条最强的粉末 X 射线衍射线是[ d obs, Å ( I, % ) ( hkl )]: 8.38(29)(0 1 2), 4.499(28)(2 0 2), 3.282(41)(2 1 4), 2.936(100)( 0 2 10)、2.816(51)(1 2 8)、2.669(37)(2 2 0)、2.207(29)(3 0 12)和1.935(35)(2 3 8)。对于 2297 次反射，结构被细化为R =0.0306，且I >2σ( I )。铝太平矿-(CeCa)的晶体结构包含两个主要由镧系元素占据的九重配位位点( A 1 和A 2)，以及第三个包含几乎等量的镧系元素和Ca的九重配位位点A 3 。X位点是空的并且在八面体M位点处铝优于Fe 3+。在三个独立的T位点中，T 2 属于(SiO 4 ) 4–阴离子，而T 1 和T 3 属于(SiO 3 OH) 3–阴离子。氟参与与A 1 和A 3 位点的配位。