Constituent Xenotime-(Y) | SSHADE

Constituent

Name: Xenotime-(Y)
IMA name: Xenotime-(Y)

Class: non-silicate mineral
Compound type: phosphate

Constituent abundance in material

Relevance: main - major
Arrangement: single phase
Mass fraction: 1.0

Chemical composition

Formula: $Y(PO_4)$
Chemical formula: YPO4
Elemental formula: Y P O (O-)3 Ybn
Isotope mixture type: terrestrial abundance

	Formula	Name	Family	Number min-max	Isotope mole fraction	State	Relevance
	$Y$	Yttrium	element	1		constituent element	main
	$(PO_4)^{3-}$	Phosphate anion	chemical function	1		anionic radical	main
	$Yb$	Ytterbium	element		1.0	constituent element	replacement

Chemical functions and bonds

Chemical functions

	Function	Number
	$(PO_4)^{3-}$	1

Chemical bonds

	Bond	Number
	$\dddot - \dddot - \dddot - P \dddot - O^{-3/4}$	4

Oxides composition

Oxides

Formula	$Y_{2}O_{3}$	$P_{2}O_{5}$
Mass fraction (%)	61.4	38.6

Classifications

Strunz

Class: phosphates - arsenates - vanadates (08)
Division: phosphates, etc. without additional anions, without H2O (08.A)
Family: with only large cations (08.AD)
Code: 08.AD.35

Dana

Major class: phosphates, arsenates, vanadates (VII)
Class: anhydrous phosphates (38)
Type: A+ XO4 (38.04)
Group: Zenotime group (Tetragonal: I41/amd) (38.04.11)
Code: 38.04.11.01

Phase type: crystalline

Crystallography

Crystal system: tetragonal
Crystal class: ditetragonal-dipyramidal
Crystal class symbol: 422 (D4)
Crystal spacegroup: I4(1)/amd

Texture: monocrystalline

Physical properties

Molar mass: 183.88 $g/mol$
Density: 4.4 - 5.1 $g/cm^3$

Optical properties

Refringence type: uniaxial
Refringence sign: positive
Birefringence: 0.095
Refraction index $n_{\alpha}$: 1.721
Refraction index $n_{\beta}$: 1.816
Color: yellowish brown, greenish brown, gray, reddish brown, brown
Diaphaneity: opaque
Luster: vitreous