General Halurgite Information Chemical Formula: |
Mg2[B4O5(OH)4]2•(H2O) |
Composition: |
Molecular Weight = 449.16 gm |
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Magnesium 10.82 % Mg 17.95 % MgO |
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Boron 19.25 % B 62.00 % B2O3 |
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Hydrogen 2.24 % H 20.05 % H2O |
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Oxygen 67.68 % O |
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______ ______ |
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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:
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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 - PrismaticH-M Symbol (2/m) Space Group: P 2/c |
X Ray Diffraction: |
By Intensity(I/Io): 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: |
PEHalurgite = 0.52 barns/electron |
U=PEHalurgite 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 |
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(26.04)Dana Type |
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(26.04.04)Dana Group |
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Strunz Class: |
06.HA.35 06 - BORATES |
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06.H - Unclassified Borates |
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06.HA -Unclassified borates |
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| 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 Search for Halurgite using: Visit our Advertisers for Halurgite : A Bijoux Google Search for HalurgiteAdam's Minerals Google Search for Halurgite Cape Minerals Google Search for Halurgite Dakota Matrix Minerals Google Search for Halurgite Excalibur Mineral Corp. Google Search for Halurgite Exceptional Minerals Google Search for Halurgite John Betts Fine Minerals Search for Halurgite McDougall Minerals Google Search for Halurgite Mineral News Website Link Rock and Mineral Shows Google Search for Halurgite Weinrich Minerals, Inc. Google Search for Halurgite Ask about Halurgite here : Print or Cut-and-Paste your Halurgite Specimen Label here :
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