Material Index
| Name | Formula | Classifications | Members | Image | Lines | Spectra | Techniques | Tags |
|---|---|---|---|---|---|---|---|---|
| Xenon | Xe | — | — | 1 | 0 | — | Element | |
| Xenotime (group) | — | — | Xenotime-(Y), Wakefieldite-(Y), Xenotime-(Yb), Pretulite, Wakefieldite-(La), Chernovite-(Y), Wakefieldite-(Ce), Wakefieldite-(Nd) | 0 | 0 | — | Group | |
| Xenotime-(Y) | YPO4 | REE phosphate, Xenotime (group), Yttrium orthophosphate | — | 246 | 21 | CL, CL/SEM, EDS, PL/Laser, Reflectance | Mineral, Orthophosphate , Phosphate | |
| Xenotime-(Yb) | Yb(PO4) | REE phosphate, Xenotime (group) | — | 0 | 0 | — | Mineral, Orthophosphate , Phosphate | |
| Xonotlite | Ca6Si6O17(OH)2 | — | — | 3 | 0 | — | Mineral, Hydroxide , Silicate | |
| YAG | Y3Al5O12 | — | — | 2 | 1 | CL/SEM | Compound, Synthetic | |
| YAP | YAlO3 | Perovskite (structure) | — | 6 | 2 | CL/SEM | Compound, Synthetic | |
| YSZ | ZrO2 | — | — | 0 | 0 | — | Simple oxide , Compound | |
| Yagiite | NaMg2(AlMg2Si12)O30 | Osumilite (group) | — | 0 | 0 | — | Mineral, Aluminosilicate | |
| Yakhontovite | (Ca,Na,K)0.2(Cu,Fe,Mg)2Si4O10(OH)2·3H2O | Smectite (group) | — | 0 | 0 | — | Hydrated , Mineral, Hydroxide , Silicate | |
| Yoderite | (MgAl3)(MgAl)Al2O2(SiO4)4(OH)2 | Andalusite (subgroup) | — | 0 | 0 | — | Mineral, Aluminosilicate , Hydroxide | |
| Yoshiokaite | Ca1-x(Al,Si)2O4 | Feldspathoid (group) | — | 0 | 0 | — | Mineral, Aluminosilicate | |
| Youngite | SiO2 | Agate | — | 0 | 0 | — | Variety , Simple oxide | |
| Ytterbium | Yb | — | — | 11 | 0 | — | Element , Metal | |
| Ytterbium orthophosphate | YbPO4 | REE phosphate | — | 7 | 0 | — | Compound, Orthophosphate , Phosphate |
