Secondary names

Yttrium(III) carbonate trihydrate; Diyttrium tricarbonate trihydrate; Y(CO3)3 trihydrate; Tengerite-(Y)

CAS number

5970-44-5

16.0

	Formula	Name	Family	Number min-max	Mole fraction	Isotope mole fraction	State	Relevance
	$Y^{3+}$	Yttrium cation	element	2	0.25	1	constituent cation	main
	$CO_3^{2-}$	Carbonate ion	molecule	3	0.375	1	molecular ion	main
	$H_2O$	Water	molecule	3	0.375	1	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
	$\eqslantgtr C-O^-$	2
	$>C=O$	1
	$-O-H$	2
	$\dddot - \dddot - C \dddot - O^{-2/3}$	3

Class

alkali salts (06)

Type

hydrated simple alkali salts (06.04)

Equivalent mineral

Tengerite-(Y)

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

Dispersion V

r > v

Pure color

white

Color

white

Diaphaneity

translucent

Luster

earthy

Links

• MinDAT: Tengerite-(Y)
• Wikipedia: Yttrium compounds
• PubChem: Yttrium Carbonate Trihydrate