Mineral Factbook

Admontite

MgB6O10·7H2OIMA symbol: Amtapproved

Admontite is a borate mineral with the formula MgB6O10·7H2O, crystallizing in the monoclinic system. It has a calculated density of 1.829 g/cm3. Its streak is white.

Photos

Admontite specimen photo
David Hospital · CC BY-SA 4.0 · Commons
Admontite specimen photo
Azmi Seyhun Kipcak, Meral Yildirim, Sureyya Aydin Yuksel, Emek Moroydor Derun, Sabriye Piskin · CC BY 4.0 · Commons

Crystallography

Crystal systemmonoclinic crystal systemWikidata (CC0)
Space groupP 1 21/c 1
Cell (Å, °)a = 12.664, b = 10.091, c = 11.322; α = 90, β = 109.6, γ = 90
Cell volume1363.03 ų, Z = 4
Axial ratios1.2550:1:1.1220calculated from COD 9012784
Source structureCOD 9012784 (Crystal Structure Communications, 1976)

Powder X-ray diffraction (calculated)

2θ (degrees, Cu Kα1)I/I₀ (max 100)
d (Å)11.935.2587.335.3334.8693.903
I/I₀10066.841.640.539.338.9

xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9012784; idealized occupancies, no preferred orientation.

Physical properties

Density (calculated)1.829 g/cm³calculated from COD 9012784
Streak
whitesingle sourceWikidata (CC0)

Chemistry (calculated)

Molecular weight375.27 g/molcalculated from the IMA formula
Composition (wt%)Mg 6.48%, B 17.29%, O 72.48%, H 3.76%

Classification

Nickel-Strunz (10th)6.FA.15Wikidata (CC0)
Nickel-Strunz (9th)6.FA.15Wikidata (CC0)