Darapskite: Difference between revisions

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|chemical_Formula      = Na<sub>3</sub>(SO<sub>4</sub>)(NO<sub>3</sub>)•H<sub>2</sub>O<br> NaNO<sub>3</sub>•Na<sub>2</sub>SO<sub>4</sub>•H<sub>2</sub>O
|chemical_Formula      = Na<sub>3</sub>(SO<sub>4</sub>)(NO<sub>3</sub>)•H<sub>2</sub>O<br> NaNO<sub>3</sub>•Na<sub>2</sub>SO<sub>4</sub>•H<sub>2</sub>O
|Hydratforms          =
|Hydratforms          =
|Crystal_Structure   =monoclinic
|Crystal_System   =monoclinic
|Crystal_Structure=
|Deliqueszenzhumidity =
|Deliqueszenzhumidity =
|Solubility          =
|Solubility          =

Revision as of 15:51, 13 February 2015

Darapskite[1][2] [3]
Darapskit-19082010-klein.jpg
Mineralogical name Darapskite
Chemical name Trisodiumsulfate nitrate Monohydrate
Trivial name
Chemical formula Na3(SO4)(NO3)•H2O
NaNO3•Na2SO4•H2O
Other forms
Crystal system monoclinic
Crystal structure
Deliquescence humidity 20°C
Solubility (g/l) at 20°C
Density (g/cm³) 2.20 g/cm3
Molar volume 111.4 cm3/mol
Molar weight 245.1 g/mol
Transparency transparent
Cleavage perfect
Crystal habit
Twinning
Phase transition
Chemical behavior
Comments can be produced from an aqueous solution of Na2SO4 and NaNO3 at 14-50°C
Crystal Optics
Refractive Indices nx = 1.391
ny = 1.481
nz = 1.486
Birefringence Δ = 0.095
Optical Orientation negative
Pleochroism
Dispersion
Used Literature
{{{Literature}}}


back to Sulfate

References[edit]

  1. http://webmineral.com/data/Darapskite.shtml viewed on 29/07/2010
  2. http://www.mindat.org/min-1226.html viewed on 29/07/2010
  3. <bib id="JCPDS:1991">

Literature[edit]

[Dana:1951]Dana E.S. (eds.) Dana J.D. (1951): Dana's System of Mineralogy, 7, Wiley & SonsLink to Google Scholar
[JCPDS:1991] (1991): JCPDS Powder Diffraction File 2 (PDF-2).Link to Google Scholar
[Dana:1951]Dana E.S. (eds.) Dana J.D. (1951): Dana's System of Mineralogy, 7, Wiley & SonsLink to Google Scholar