Hydroglauberite Mineral Data

Hydroglauberite Mineral Data +

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General Hydroglauberite Information

Chemical Formula:

Na4Ca(SO4)3·2(H2O)

Composition:

Molecular Weight = 456.26 gm

Sodium 20.16 % Na 27.17 % Na₂O

Calcium 8.78 % Ca 12.29 % CaO

Hydrogen 0.88 % H 7.90 % H₂O

Sulfur 21.08 % S 52.64 % SO₃

Oxygen 49.09 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Na₄Ca(SO₄)₃·2(H₂O)

Environment:

Alteration product of glauberite.

IMA Status:

Approved IMA 1969

Locality:

Kara-Kalpakii, Uzbekistan. Link to MinDat.org Location Data.

Name Origin:

Named for its composition, rather similar to glauberite, but hydrated.

Hydroglauberite Image

Images:

Click Here for Larger Hydroglauberite Image

Hydroglauberite Glauberite

Comments: Putty-colored chalky hydroglauberite on glauberite crystals.
Location: Camp Verde, Yavapai County, Arizona, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Hydroglauberite Crystallography

Crystal System:

OrthorhombicSpace Group: Unk.

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.08(1), 2.78(0.9), 9.2(0.9),

Physical Properties of Hydroglauberite

Cleavage:

[???] Good, [???] Distinct, [???] Poor

Color:

Snow white.

Density:

1.51

Luster:

Silky

Streak:

white

Optical Properties of Hydroglauberite

Gladstone-Dale:

CI meas= -0.657 (Poor) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.3272,KC= 0.1975

Optical Data:

Biaxial (-), a=1.488, g=1.5, bire=0.0120

Calculated Properties of Hydroglauberite

Electron Density:

r_electron=1.51 gm/cc
note: r_{Hydroglauberite}=1.51 gm/cc.

Fermion Index

Fermion Index = 0.00193
Boson Index = 0.99807

Photoelectric:

PE_{Hydroglauberite}= 2.69 barns/electron
U=PE_{Hydroglauberite} x r_electron= 4.05 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Hydroglauberite is Not Radioactive

Hydroglauberite Classification

Dana Class:

29.4.1.1 (29)Hydrated Acid and Sulfates

(29.4)where (A+)2 Bn (XO4)p · x(H2O)

(29.4.1)Dana Group

29.4.1.1 Hydroglauberite Na4Ca(SO4)3·2(H2O) Unk. Ortho

Strunz Class:

VI/C.21-40 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/C - Water-bearing sulfates without unfamiliar anions. Cations of very big size

VI/C.21 - Matteuccite - Mirabilite series

VI/C.21-10 Matteuccite NaHSO4·(H2O) Aa m

VI/C.21-20 Lecontite (NH4,K)Na(SO4)·2(H2O) P 2₁2₁2₁ 2 2 2

VI/C.21-30 Eugsterite Na4Ca(SO4)3·2(H2O) Unk. Mono

VI/C.21-40 Hydroglauberite Na4Ca(SO4)3·2(H2O) Unk. Ortho

VI/C.21-50 Wattevillite Na2Ca(SO4)2·4(H2O)(?) Unk Ortho

VI/C.21-60 Syngenite K2Ca(SO4)2·(H2O) P 2₁/m 2/m

VI/C.21-70 Koktaite (NH4)2Ca(SO4)2·(H2O) P 2₁/m 2/m

VI/C.21-80 Mirabilite Na2SO4·10(H2O) P 2₁/a 2/m

Other Hydroglauberite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Hydroglauberite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris

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Hydroglauberite

Na4Ca(SO4)3·2(H2O)
Dana No: 29.4.1.1 Strunz No: VI/C.21-40
Locality:

Notes: