)(OH0.35.55 , F0.45.65 ), respectively. The 5-Hydroxy-1-tetralone Formula average concentrations of Na2 O, CaO, and)(OH0.35.55

)(OH0.35.55 , F0.45.65 ), respectively. The 5-Hydroxy-1-tetralone Formula average concentrations of Na2 O, CaO, and
)(OH0.35.55 , F0.45.65 ), respectively. The typical concentrations of Na2 O, CaO, and F of type-1 pyrochlore have been 1.51, 15.13, and 1.49 wt. , respectively, and also the SiO2 concentration was discovered to be two.83.83 wt. , with the typical concentration becoming five.11 wt. . The Na2 O, CaO, and F average concentrations in the type-2 pyrochlore have been larger than these from the type-1 pyrochlore, with the average values being 4.44 wt. , 17.45 wt. , and two.54 wt. , respectively. Furthermore, the SiO2 concentration was found to become lower, being much less than 1 wt. . In addition, the Overgrown pyrochlore showed a composition in between the type-1 pyrochlore and type-2 pyrochlore (Figure 4).Table 1. Key elements of representative pyrochlores with the Shuangshan nepheline syenite (wt. ). Pyrochlore Variety Sample No. Nb2 O5 Ta2 O5 TiO2 SiO2 Al2 O3 FeO 1 56.17 2.56 8.06 4.62 0.94 0.74 Type-1 Pyrochlore 2 54.39 2.83 7.88 5.88 1.31 0.77 three 49.70 2.31 7.28 8.83 two.60 0.12 four 50.53 two.17 7.30 7.52 1.89 0.46 five 60.63 1.86 eight.54 Type-2 Pyrochlore 6 59.06 two.39 8.61 0.13 0.06 7 59.44 two.49 7.71 0.05 0.25 8 59.78 2.05 8.61 0.12 0.12 9 55.74 2.62 8.09 2.61 0.75 Overgrown Pyrochlore 10 56.82 two.57 eight.45 1.16 0.17 11 59.34 two.08 eight.39 0.05 0.Minerals 2021, 11,7 ofTable 1. Cont. Pyrochlore Variety Sample No. MnO Na2 O Y2 O3 SrO K2 O CaO UO2 PbO F H2 O F=O Total 1 0.59 0.64 0.20 1.14 0.60 14.97 1.59 0.41 1.27 two.24 0.53 96.19 Type-1 Pyrochlore 2 0.53 0.16 0.13 1.19 0.42 14.00 1.99 0.32 1.08 2.39 0.45 94.80 three 0.04 1.42 0.30 0.40 0.58 13.89 two.38 0.37 1.53 two.31 0.64 93.45 1.11 0.03 0.27 0.44 0.15 0.01 0.14 0.01 0.01 0.04 0.74 0.03 0.01 0.24 0.76 4 0.76 1.58 0.40 0.40 0.32 15.07 1.68 0.58 1.42 2.22 0.60 92.08 1.18 0.03 0.28 0.39 0.12 0.02 0.03 0.16 0.01 0.01 0.02 0.84 0.02 0.01 0.23 0.77 five Type-2 Pyrochlore six 7 five.29 0.25 0.28 18.79 1.65 0.38 three.43 0.87 1.44 99.45 1.61 0.04 0.35 0.01 0.61 0.01 0.01 1.21 0.02 0.01 0.65 0.35 8 0.03 4.67 0.39 0.04 0.02 17.69 1.93 0.45 two.43 1.42 1.02 98.72 1.58 0.03 0.38 0.01 0.01 0.53 0.01 1.11 0.03 0.01 0.45 0.55 9 0.15 three.92 0.51 0.07 0.12 16.27 2.42 0.49 1.83 1.79 0.77 96.63 1.42 0.04 0.34 0.15 0.05 0.01 0.43 0.02 0.01 0.98 0.03 0.01 0.33 0.67 Overgrown Pyrochlore 10 0.06 4.50 0.46 0.18 0.02 15.95 two.35 0.37 2.03 1.59 0.85 95.84 1.51 0.04 0.37 0.07 0.01 0.51 0.01 0.01 1.00 0.03 0.01 0.38 0.62 8 of 18 11 5.75 0.33 0.04 17.70 1.85 0.44 three.39 0.93 1.42 98.96 1.59 0.03 0.37 0.01 0.66 0.01 1.12 0.02 0.01 0.63 0.Nb 1.34 1.27 Ta 0.04 0.04 Ti 0.32 0.31 Si 0.24 0.30 Al 0.06 0.08 Fe 0.03 0.03 Mn 0.03 0.02 Na 0.07 0.02 Y 0.01 Sr 0.04 0.04 K 0.04 0.03 Ca 0.85 0.78 U 0.02 0.02 Pb 0.01 F 0.21 0.18 OH 0.82 Minerals 2021, 11, x0.79 PEER Evaluation FOR0.03 5.12 4.70 0.37 0.39 0.06 0.09 17.88 17.79 1.84 1.79 0.44 0.39 2.75 two.61 1.27 1.31 1.15 1.10 99.66 98.25 Structural Formulae 1.60 1.57 0.03 0.04 0.37 0.38 0.01 0.58 0.54 0.01 0.01 1.12 1.12 0.02 0.02 0.01 0.01 0.51 0.49 0.49 0.Note. Calculated around the basis of 2 B web page cations. (-) is under detection limit. H2 O is calculated depending on the content of OH.Figure four. four. Main element Enzymes & Regulators manufacturer compositions of pyrochlore inside the Shuangshan nepheline syenite as a Figure Important element compositions of pyrochlore within the Shuangshan nepheline syenite as a function on the Nb2O5 (wt. ) concentration: (a) CaO, (b) F, (c) SiO2, and (d) Na2O.function from the Nb2 O5 (wt. ) concentration: (a) CaO, (b) F, (c) SiO2 , and (d) Na2 O.4.two. Zircon Determined by its morphology and paragenetic assemblage, zircon in the Shuangshan nepheline syenite may also be divided into two types. Type-1 zi.