Chalconatronite

Na₂Cu(CO₃)₂·₃H₂OIMA symbol: Chnagrandfathered

Chalconatronite is a carbonate or nitrate mineral with the formula Na2Cu(CO3)2·3H2O, crystallizing in the monoclinic system. It has a calculated density of 2.279 g/cm3.

Photos

Chalconatronite specimen photo — David Hospital · CC BY-SA 4.0 · Commons

Crystallography

Crystal system	monoclinic crystal systemWikidata (CC0)
Space group	P 1 21/n 1
Cell (Å, °)	a = 9.696, b = 6.101, c = 13.779; α = 90, β = 91.83, γ = 90
Cell volume	814.685 Å³, Z = 4
Axial ratios	1.5892:1:2.2585calculated from COD 9008272
Source structure	COD 9008272 (Zeitschrift fur Kristallographie, 1978) — 1 of 2 structures

Powder X-ray diffraction (calculated)

d (Å)	6.886	4.165	5.163	3.668	7.809	2.083
I/I₀	100	64.4	42.9	39.7	26.7	26

xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9008272; idealized occupancies, no preferred orientation.

Physical properties

Density (calculated)	2.279 g/cm³calculated from COD 9008272

Chemistry (calculated)

Molecular weight	283.59 g/molcalculated from the IMA formula
Composition (wt%)	Na 16.21%, Cu 22.41%, C 8.47%, O 50.78%, H 2.13%

Classification

Nickel-Strunz (10th)	5.CB.40Wikidata (CC0)
Nickel-Strunz (9th)	5.CB.40Wikidata (CC0)
Dana (8th)	15.2.3.1Wikidata (CC0)