CAS number

5970-44-5

	Formula	Name	Family	Number min-max	Isotope mole fraction	State	Relevance
	$Y^{3+}$	Yttrium cation	element	2		constituent cation	main
	$(CO_3)^{2-}$	Carbonate anion	chemical function	3		anionic radical	main
	$H_2O$	Water	molecule	2 - 3		hydration	main

Chemical functions

	Function	Number
	$(CO_3)^{2-}$	3
	$R-OH$	2

Chemical bonds

	Bond	Number
	$\cdot (\cdot) Y^{3+} \cdot O^{-}-$	6
	$-O \dots H-$	6
	$-O-H$	2
	$\dddot - \dddot - C \dddot - O^{-2/3}$	3

Oxides

Formula	$Y_{2}O_{3}$	$H_{2}O$	$CO_{2}$
Mass fraction (%)	56.05	11.18	32.77

Strunz

Class

carbonates - nitrates (05)

Division

carbonates without additional anions, with H2O (05.C)

Family

with rare-earth elements (REE) (05.CC)

Code

05.CC.10

Dana

Major class

carbonates, nitrates, borates (V)

Class

hydrated carbonates (15)

Type

where A+(XO3)·x(H2O) (15.04)

Group

-Tengerite- group (15.04.03)

Code

15.04.03.01

Phase type

crystalline

Crystal system

orthorhombic

Crystal class

dipyramidal

Crystal class symbol

mmm (D2h)

Crystal spacegroup

Pnnm

Refringence type

biaxial

Refringence sign

positive

Birefringence

0.029

Refraction index $n_{\alpha}$

1.587

Refraction index $n_{\beta}$

1.57

Refraction index $n_{\gamma}$

1.616

Pure color

colorless

Color

white

Diaphaneity

transparent to translucent

Luster

vitreous

Links

• MinDAT: Tengerite-(Y)
• WebMineral: Tengerite-(Y)