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![Mineralogy Database Mineralogy Database](/images/Hedyphane_Crystal.gif) |
Antarcticite Mineral Data
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General Antarcticite Information
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Chemical Formula: |
CaCl2•6(H2O) |
Composition: |
Molecular Weight = 219.08 gm |
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Calcium 18.29 % Ca 25.60 % CaO |
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Hydrogen 5.52 % H 49.34 % H2O |
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Chlorine 32.37 % Cl 32.37 % Cl |
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- %
Cl -7.30 % -O=Cl2 |
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Oxygen 43.82 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
CaCl2•6(H2O) |
Environment: |
Calcium chloride rich brines at saturation in cool weather.. |
IMA Status: |
Approved IMA 1965 |
Locality: |
Saline lakes located in the dry valleys of Antarctica. Bristol Lake, Mojave Co., California. Link to MinDat.org Location Data. |
Name Origin: |
Named after the continent of Antarctica. |
Name Pronunciation: |
Antarcticite + Pronunciation |
Synonym: |
Hydrophilite - antarcticite or sinjarite |
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ICSD 59142 |
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PDF 26-1053 |
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Antarcticite Image |
Images:
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Antarcticite
Comments: White antarcticite crystals in sealed in mineral oil.
Location: Bristol Lake, Mojave Co.,California, USA.
Scale: Sample Jar 6 cm.
© Diederik Visser |
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Antarcticite Crystallography
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Axial Ratios: |
a:c = 1:0.50063 |
Cell Dimensions: |
a = 7.89, c = 3.95, Z = 1; V = 212.95 Den(Calc)= 1.71 |
Crystal System: |
Trigonal - Trapezohedral H-M Symbol (3 2) Space Group: P 321 |
X Ray Diffraction: |
By Intensity(I/Io): 2.16(1), 3.93(0.75), 2.78(0.63), |
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Physical Properties of Antarcticite
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Cleavage: |
{0001} Perfect, {1010} Very Good |
Color: |
Colorless. |
Density: |
1.705 - 1.725, Average = 1.71 |
Diaphaneity: |
Transparent |
Fracture: |
Brittle - Generally displayed by glasses and most non-metallic minerals. |
Habit: |
Acicular - Occurs as needle-like crystals. |
Habit: |
Crystalline - Coarse - Occurs as well-formed coarse sized crystals. |
Habit: |
Deliquescent - Crystals absorb water from the air and melt or otherwise deteriorate. |
Hardness: |
2-3 - Gypsum-Calcite |
Luster: |
Vitreous (Glassy) |
Streak: |
white |
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Optical Properties of Antarcticite
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Optical Data: |
Uniaxial (-), e=1.495, w=1.55, bire=0.0550. |
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Calculated Properties of Antarcticite
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Electron Density: |
Bulk Density (Electron Density)=1.78 gm/cc note: Specific Gravity of Antarcticite =1.71 gm/cc. |
Fermion Index: |
Fermion Index = 0.0004655841 Boson Index = 0.9995344159 |
Photoelectric: |
PEAntarcticite = 4.31 barns/electron U=PEAntarcticite x rElectron Density= 7.67 barns/cc. |
Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Antarcticite is Not Radioactive |
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Antarcticite Classification
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Dana Class: |
09.02.06.01 (09)Anhydrous and Hydrated Halides |
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(09.02)where A (X)2 |
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(09.02.06)Dana Group |
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09.02.06.01 Antarcticite CaCl2•6(H2O) P 321 3 2 |
Strunz Class: |
03.BB.30 03 - HALIDES |
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03.B - Simple Halides, with H2O |
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03.BB -M:X = 1:2 |
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03.BB.30 Antarcticite CaCl2•6(H2O) P 321 3 2 |
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Other Antarcticite Information
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References: |
NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
See Also: |
Links to other databases for Antarcticite :
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
15 - WWW-MINCRYST
Search for Antarcticite using:
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Visit our Advertisers for Antarcticite :
Ask about Antarcticite here :
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Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in
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Print or Cut-and-Paste your Antarcticite Specimen Label here :
Antarcticite
CaCl2•6(H2O)
Dana No: 09.02.06.01 Strunz No: 03.BB.30
Locality:
Notes:
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Dakota Matrix
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