Gorgeyite

From Saltwiki
Gorgeyite[1][2]
Mineralogical name Gorgeyite, Görgeyite, Mikheevite
Chemical name
Trivial name
Chemical formula K2Ca5(SO4)6•H2O
Other forms
Crystal system monoclinic
Crystal structure
Deliquescence humidity 20°C
Solubility (g/l) at 20°C
Density (g/cm³) 2.87 g/cm3
Molar volume 304 cm3/mol
Molar weight 872.98 g/mol
Transparency
Cleavage
Crystal habit
Twinning
Phase transition
Chemical behavior
Comments
Crystal Optics
Refractive Indices nx= 1.560
ny = 1.569
nz = 1.584
Birefringence Δ = 0.024
Optical Orientation positive
Pleochroism
Dispersion 79°
Used Literature
[Steiger.etal:2000]Title: Data compliation and experimantal determinations
Author: Steiger, Michael; Beyer, Roland; Dorn, Joachim; Zeunert, Anke
Link to Google Scholar
[Dana:1951]Title: Dana's System of Mineralogy
Author: Dana J.D.
Link to Google Scholar


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Weblinks

Literature

[Dana:1951]Dana E.S. (eds.) Dana J.D. (1951): Dana's System of Mineralogy, 7, Wiley & SonsLink to Google Scholar
[Steiger.etal:2000]Steiger, Michael; Beyer, Roland; Dorn, Joachim; Zeunert, Anke (2000): Data compliation and experimantal determinations. In: Price, Clifford A. (eds.): An Expert Chemical Model for Determining the Environmental Conditions Needed to Prevent Salt Damage in Porous Materials, Archetype Publications Ltd, 19-44Link to Google Scholar