Halurgite Mineral Data

General Halurgite Information

Chemical Formula:

Mg2[B4O5(OH)4]2•(H2O)

Composition:

Molecular Weight = 449.16 gm

Magnesium 10.82 % Mg 17.95 % MgO

Boron 19.25 % B 62.00 % B₂O₃

Hydrogen 2.24 % H 20.05 % H₂O

Oxygen 67.68 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Mg₂2(B₄)2(O₅)2(OH)₄•(H₂O)

Environment:

Occurrs in interstices and vugs in a rock salt diapir.

IMA Status:

Approved IMA 1962

Locality:

Chelkar salt dome, Ak-sa?i Valley, Uralsk district, Kazakhstan. Link to MinDat.org Location Data.

Name Origin:

Named for the Institute of Halurgy, St. Petersburg, Russia, for its studies of saline deposits.

Name Pronunciation:

Halurgite + Pronunciation

Halurgite Image

Images:

Halurgite

Comments: Nearly opaque granular halurgite.
Location: Chelkar Salt Dome, Zapadno-Kazahstan, Kazakhstan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Halurgite Crystallography

Axial Ratios:

a:b:c =1.7434:1:1.7368

Cell Dimensions:

a = 13.25, b = 7.6, c = 13.2, Z = 4; beta = 92.2° V = 1,328.26 Den(Calc)= 2.25

Crystal System:

Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 2/c

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

By Intensity(I/I_o): 3.29(1), 3.87(1), 4.81(0.9),

Physical Properties of Halurgite

Color:

White.

Density:

2.19

Hardness:

2.5-3 - Finger Nail-Calcite

Streak:

white

Optical Properties of Halurgite

Gladstone-Dale:

CI meas= -0.057 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.029 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2443,KPDmeas= 0.251,KC= 0.2374
Ncalc = 1.52 - 1.53

Optical Data:

Biaxial (+), a=1.532, b=1.545, g=1.572, bire=0.0400, 2V(Calc)=72, 2V(Meas)=70.

Calculated Properties of Halurgite

Electron Density:

Bulk Density (Electron Density)=2.26 gm/cc
note: Specific Gravity of Halurgite =2.25 gm/cc.

Fermion Index:

Fermion Index = 0.04
Boson Index = 0.96

Photoelectric:

PE_Halurgite= 0.52 barns/electron
U=PE_Halurgite x rElectron Density= 1.17 barns/cc.

Radioactivity:

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

Halurgite Classification

Dana Class:

26.04.04.01 (26)Hydrated Borates Containing Hydroxyl or Halogen

(26.04)Dana Type

(26.04.04)Dana Group

26.04.04.01 Halurgite Mg2[B4O5(OH)4]2•(H2O) P 2/c 2/m

Strunz Class:

06.HA.35 06 - BORATES

06.H - Unclassified Borates

06.HA -Unclassified borates

06.HA.35 Halurgite Mg2[B4O5(OH)4]2•(H2O) P 2/c 2/m

Other Halurgite Information

References:

NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Halurgite :
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 Halurgite Specimen Label here :

Halurgite

Mg2[B4O5(OH)4]2•(H2O)
Dana No: 26.04.04.01 Strunz No: 06.HA.35
Locality:

Notes:

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