Aeschynite-(Y)

(Y,Ln,Ca,Th)(Ti,Nb)₂(O,OH)₆IMA symbol: Aes-Yrenamed

Aeschynite-(Y) is an oxide or hydroxide mineral with the formula (Y,Ln,Ca,Th)(Ti,Nb)2(O,OH)6, crystallizing in the orthorhombic system. It has a calculated density of 4.868 g/cm3.

Photos

Aeschynite-(Y) specimen photo — Robert M. Lavinsky · CC BY-SA 3.0 · Commons

Crystallography

Crystal system	orthorhombic crystal systemWikidata (CC0)
Space group	P n m a
Cell (Å, °)	a = 10.862, b = 7.483, c = 5.15; α = 90, β = 90, γ = 90
Cell volume	418.594 Å³, Z = 4
Axial ratios	1.4516:1:0.6882calculated from COD 9005422
Source structure	COD 9005422 (European Journal of Mineralogy, 1999) — 1 of 5 structures

Powder X-ray diffraction (calculated)

d (Å)	2.916	2.962	2.754	3.081	5.431	1.976
I/I₀	100	50.2	27.4	23.4	21.1	20.4

xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9005422; idealized occupancies, no preferred orientation.

Physical properties

Density (calculated)	4.868 g/cm³calculated from COD 9005422

Classification

Nickel-Strunz (10th)	4.DF.05Wikidata (CC0)
Nickel-Strunz (9th)	4.DF.05Wikidata (CC0)