Fluorbritholite-(Nd), ideally Ca2Nd3(SiO4)3F, has been approved by the International Mineralogical Association (IMA2023–001) and constitutes a new member of the britholite group of the apatite supergroup. It occurs in skarn from the Malmkärra iron mine, Norberg, Västmanland (one of the Bastnäs-type deposits in Sweden), associated with calcite, dolomite, magnetite, lizardite, talc, fluorite, baryte, scheelite, gadolinite-(Nd) and other REE minerals. Fluorbritholite-(Nd) forms anhedral and small grains, rarely up to 250 μm across. They are brownish pink and transparent with a vitreous to greasy lustre. The mineral is brittle, with an uneven or subconchoidal fracture and lacks a cleavage. In thin section, the mineral is nonpleochroic, uniaxial (–). Dcalc = 4.92(1) g⋅cm−3 and ncalc = 1.795. The empirical chemical formula from electron microprobe (WDS) point analyses is (Ca1.62Nd0.97Ce0.83Y0.52Sm0.30Gd0.23Pr0.17La0.16Dy0.11Er0.03Tb0.03Ho0.01Yb0.01)Σ4.99(Si2.92P0.08As0.01)Σ3.01O12.00[O0.48F0.26(OH)0.14Cl0.10Br0.02]Σ1.00. The crystal structure of fluorbritholite-(Nd) was refined from single-crystal X-ray diffraction data to R1= 0.043 for 704 unique reflections. It belongs to the hexagonal system, space group P63/m, with unit cell parameters a = 9.5994(3), c = 6.9892(4) Å and V = 557.76(5) Å3 for Z = 2. Fluorbritholite-(Nd) and other britholite-group minerals are a major sink for neodymium in REE-bearing skarns of Bastnäs type.

Fluorbritholite-(Nd)，理想的是Ca 2 Nd 3 (SiO 4 ) 3 F，已获得国际矿物学协会(IMA2023-001)的批准，并构成磷灰石超族中的britholite组的新成员。它产于西曼兰省 Norberg 的 Malmkärra 铁矿（瑞典巴斯特奈斯型矿床之一）的矽卡岩中，与方解石、白云石、磁铁矿、蜥蜴石、滑石、萤石、重晶石、白钨矿、钆钆石（Nd）等伴生。稀土矿物。Fluorbritholite-(Nd) 形成上反角和小颗粒，直径很少达到 250 μm。它们呈棕粉色，透明，具有玻璃光泽至油腻光泽。该矿物脆性，具有不均匀或亚贝壳状断口，缺乏解理。在薄片中，该矿物是非多色性、单轴 (-) 的。D计算= 4.92(1) g⋅cm −3且n计算= 1.795。来自电子微探针（ WDS ）点分析的经验化学公式为（CA 1.62 ND 0.97 CE 0.83 Y 0.52 SM 0.52 SM 0.30 GD 0.23 PR 0.17 LA 0.16 LA 0.16 DY 0.11 ER 0.03 TB 0.03 TB 0.03 HO 0.01 yb 0.01 yb 0.01）0.01 ) Σ3.01 O 12.00 [O 0.48 F 0.26 (OH) 0.14 Cl 0.10 Br 0.02 ] Σ1.00。氟硼石-(Nd) 的晶体结构根据单晶 X 射线衍射数据精炼至704 次独特反射的R 1 = 0.043。它属于六方晶系，空间群P 6 3 / m，晶胞参数a = 9.5994(3)、c = 6.9892(4) Å 和V = 557.76(5) Å 3（Z = 2）。 Nd) 和其他长沸石族矿物是巴斯特奈斯型含稀土矽卡岩中钕的主要汇。