admontite

Key facts

Mineral.name

Admontite

Mineral.category

Nesoborates

Mineral.image

Admontite.jpg

Mineral.formula

MgB6O10·7H2O or MgB6O7(OH)6·4H2O

Mineral.IMAsymbol

Amt

Mineral.strunz

6.FA.15

Mineral.dana

26.6.3.1

Mineral.system

Monoclinic

Mineral.class

Prismatic (2/m) (same H-M symbol)

Mineral.symmetry

P21/c

Mineral.color

colorless

Mineral.cleavage

Absent

Mineral.fracture

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz)

Mineral.mohs

2 - 3 - Gypsum-Calcite

Mineral.refractive

nα = 1.442 nγ = 1.504

Mineral.opticalprop

Biaxial (−)

Mineral.birefringence

δ = 0.062

Mineral.dispersion

None

via Wikipedia infobox