Mineral Factbook

Artinite

Mg2(CO3)(OH)2·3H2OIMA symbol: Artgrandfathered

Artinite is a carbonate or nitrate mineral with the formula Mg2(CO3)(OH)2·3H2O, crystallizing in the monoclinic system. It has a Mohs hardness of 2, typically white in color, a specific gravity of 2.028. Its streak is white.

Photos

Artinite specimen photo
Ivar Leidus · CC BY-SA 4.0 · Commons
Artinite specimen photo
HolDu · CC BY-SA 3.0 · Commons
Artinite specimen photo
Animalculum · CC BY 4.0 · Commons
Artinite specimen photo
Darla Sondrol · CC0 · Commons

Crystallography

Crystal systemmonoclinic crystal systemWikidata (CC0)
Space groupC 1 2/m 1
Cell (Å, °)a = 16.56, b = 3.153, c = 6.231; α = 90, β = 99.1, γ = 90
Cell volume321.249 ų, Z = 4
Axial ratios5.2521:1:1.9762calculated from COD 9007623
Source structureCOD 9007623 (Acta Crystallographica, Section B, 1977)

Powder X-ray diffraction (calculated)

2θ (degrees, Cu Kα1)I/I₀ (max 100)
d (Å)5.3382.212.7293.6848.1761.863
I/I₀10075.26967.24241.1

xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9007623; idealized occupancies, no preferred orientation.

Physical properties

Density (calculated)2.033 g/cm³calculated from COD 9007623
Hardness (Mohs)
2single sourceDana's System, 2nd Appendix (1909)
Specific gravity
2.028 g/cm3corroboratedDana's System, 2nd Appendix (1909)
Color
whitesingle sourceDana's System, 2nd Appendix (1909)
Streak
whitesingle sourceWikidata (CC0)

Chemistry (calculated)

Molecular weight196.68 g/molcalculated from the IMA formula
Composition (wt%)Mg 24.72%, C 6.11%, O 65.08%, H 4.1%

Classification

Nickel-Strunz (10th)5.DA.10Wikidata (CC0)
Nickel-Strunz (9th)5.DA.10Wikidata (CC0)