Hydroglauberite Mineral Data

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.

Name Pronunciation:

Hydroglauberite + Pronunciation

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
Ncalc = 1.3

Optical Data:

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

Calculated Properties of Hydroglauberite

Electron Density:

Bulk Density (Electron Density)=1.51 gm/cc
note: Specific Gravity of Hydroglauberite =1.51 gm/cc.

Fermion Index:

Fermion Index = 0.0019368651
Boson Index = 0.9980631349

Photoelectric:

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

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Hydroglauberite is Not Radioactive

Hydroglauberite Classification

Dana Class:

29.04.01.01 (29)Hydrated Acid and Sulfates

(29.04)where (A+)2 Bn (XO4)p · x(H2O)

(29.04.01)Dana Group

29.04.01.01 Hydroglauberite Na4Ca(SO4)3•2(H2O) Unk. Ortho

Strunz Class:

07.CD.20 07 - SULFATES (SELENATES, TELLURATES)

07.C - Sulfates (selenates, etc.) without Additional Anions, with H2O

07.CD -With only large cations

07.CD.20 Hydroglauberite Na4Ca(SO4)3•2(H2O) Unk. Ortho

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 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Print or Cut-and-Paste your Hydroglauberite Specimen Label here :

Hydroglauberite

Na4Ca(SO4)3•2(H2O)
Dana No: 29.04.01.01 Strunz No: 07.CD.20
Locality:

Notes: