Help mindat.org|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on Mindat
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralSearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Antarcticite

This page is currently not sponsored. Click here to sponsor this page.
Antarctica

Antarctica
Formula:
CaCl2 · 6H2O
Colour:
Colourless
Lustre:
Vitreous
Hardness:
2 - 3
Specific Gravity:
1.715
Crystal System:
Trigonal
Name:
For its occurrence on the continent of Antarctica.
A highly hygroscopic mineral. May dehydrate to mesohydride under certain conditions.

A synthetic Sr analogue is known.


Hide all sections | Show all sections

Classification of AntarcticiteHide

Approved
3.BB.30

3 : HALIDES
B : Simple halides, with H2O
B : M:X = 1:2
9.2.6.1

9 : NORMAL HALIDES
2 : AX2
8.4.9

8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
4 : Halides of the alkaline earths and Mg

Physical Properties of AntarcticiteHide

Vitreous
Transparency:
Transparent
Colour:
Colourless
Streak:
White
Hardness:
2 - 3 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
on {0001}, good to perfect on one prism face
Density:
1.715 g/cm3 (Measured)    1.7 g/cm3 (Calculated)

Optical Data of AntarcticiteHide

Type:
Uniaxial (-)
RI values:
nω = 1.550 nε = 1.490 - 1.500
Max Birefringence:
δ = 0.060
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low

Chemical Properties of AntarcticiteHide

Formula:
CaCl2 · 6H2O

Crystallography of AntarcticiteHide

Crystal System:
Trigonal
Class (H-M):
3 2 - Trapezohedral
Space Group:
P3 2 1
Cell Parameters:
a = 7.9 Å, c = 3.95 Å
Ratio:
a:c = 1 : 0.5
Unit Cell V:
213.49 ų (Calculated from Unit Cell)
Z:
1

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.44 (24)
2.80 (23)
2.16 (23)
2.60 (22)
3.98 (18)
2.28 (13)
6.92 (9)
Comments:
Recorded on material from the type locality

Type Occurrence of AntarcticiteHide

General Appearance of Type Material:
Aggregates of acicular crystals with poor terminations, to 15 cm
Geological Setting of Type Material:
Precipitate from highly saline brines under very arid conditions

Synonyms of AntarcticiteHide

Other Language Names for AntarcticiteHide

Simplified Chinese:南极石
Traditional Chinese:南極石

Related Minerals - Nickel-Strunz GroupingHide

3.BB.05EriochalciteCuCl2 · 2H2OOrth. mmm (2/m 2/m 2/m)
3.BB.10RokühniteFeCl2 · 2H2OMon.
3.BB.15BischofiteMgCl2 · 6H2OMon. 2/m : B2/m
3.BB.20NickelbischofiteNiCl2 · 6H2OMon.
3.BB.25SinjariteCaCl2 · 2H2OTet.
3.BB.35TachyhydriteCaMg2Cl6 · 12H2OTrig.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

8.4.1SellaiteMgF2Tet. 4/mmm (4/m 2/m 2/m) : P42/mnm
8.4.2NeighboriteNaMgF3Orth. mmm (2/m 2/m 2/m)
8.4.3BischofiteMgCl2 · 6H2OMon. 2/m : B2/m
8.4.4KorshunovskiteMg2Cl(OH)3 · 4H2OTric.
8.4.5CarnalliteKMgCl3 · 6H2OOrth. mmm (2/m 2/m 2/m) : Pnna
8.4.6TachyhydriteCaMg2Cl6 · 12H2OTrig.
8.4.7FluoriteCaF2Iso. m3m (4/m 3 2/m) : Fm3m
8.4.8SinjariteCaCl2 · 2H2OTet.
8.4.10ChlorocalciteKCaCl3Orth. mmm (2/m 2/m 2/m) : Pnma
8.4.11RorisiteCaFClTet.
8.4.12JarliteNa(Sr,Na)7MgAl6F32(OH,H2O)2Mon. 2/m
8.4.13CalcjarliteNa(Ca,Sr)3Al3(OH)2F14Mon.
8.4.14TikhonenkoviteSr[AlF4(OH)(H2O)]Mon. 2/m : P21/b
8.4.15AcuminiteSr[AlF4(OH)(H2O)]Mon. 2/m : B2/b
8.4.16FrankdicksoniteBaF2Iso. m3m (4/m 3 2/m) : Fm3m
8.4.17UsoviteBa2CaMgAl2F14Mon.
8.4.18BøgvaditeNa2SrBa2Al4F20Mon. 2/m

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for AntarcticiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Torii, T., Ossaka, J. (1965) Antarcticite: a new mineral, calcium chloride hexahydrate, dicovered in Antarctica. Science: 149: 975-977.
Fleischer, M. (1965) New mineral names. American Mineralogist: 50: 2096-2111. [abstract]
Dunning, G.E., Cooper, J.F., Jr. (1969) A second occurrence of antarcticite, from Bristol Dry Lake, California. American Mineralogist: 54: 1018-1025.
Agron, P.A., Busing, W.R. (1986) Calcium and strontium dichloride hexahydrates by neutron diffraction. Acta Crystallographica: C42: 141-143.
Schiffries, C.M. (1990) Liquid-absent aqueous fluid inclusions and phase equilibria in the system CaCl2 - NaCl - H2O. Geochimica et Cosmochimica Acta: 54: 611-619.
Eckstein, Y., Manecki, M., Matyjasik, M., Rosenthal, E. (1994) Hydrochemical stratification and processes in three "blue holes" on North Andros Island, Bahamas. Geological Society of America 1994 Annual Meeting - Abstracts with Programs : 26: 7: A-360.
Anthony, J. W., et al. (1997) Handbook of Mineralogy, Vol. 3, 16.

Internet Links for AntarcticiteHide

Localities for AntarcticiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Antarctica
 
  • Eastern Antarctica
    • Victoria Land
      • Ross Island
Handbook of Mineralogy
      • Wright Valley
J. W. Anthony et al.: Handbook of Mineralogy, Vol. 3 (1997)
Australia
 
  • Queensland
    • Cloncurry Shire
      • Rosebud Station
        • Mary Kathleen district
T. Kwak & P. Abeysinghe (1987): Rare earth and uranium minerals present as daughter crystals in fluid inclusions, Mary Kathleen U-REE skarn, Queensland, Australia. Mineralogical Magazine 51, 665-670.
Bahamas
 
  • North Andros District
J. W. Anthony et al.: Handbook of Mineralogy, Vol. 3 (1997); Eckstein Y., Manecki M., Matyjasik M., Rosenthal E. (1994): Hydrochemical stratification and processes in three “blue holes” on North Andros Island, Bahamas. Geological Society of America 1994 Annual Meeting, Seattle, WA, Oct. 24-27, Abstracts with Programs, 26, 7, A-360.
Canada
 
  • Québec
    • Abitibi-Témiscamingue
      • Abitibi RCM
        • Preissac
Taner, H., Williams-Jones, A.E., and Wood, S.A. (1998): Mineralium Deposita 34, 579-590.
China
 
  • Qinghai Province
    • Haixi Autonomous Prefecture
      • Golmud Co. (Ge'ermu Co.)
Shaoxiu Yang (1991): Journal of Lake Sciences 3(1), 1-10
      • Lenghu Co.
Bingxiao Li and Kejun Wang (1986): Acta Mineralogica Sinica 6(1), 59-62; Shaoxiu Yang (1991): Journal of Lake Sciences 3(1), 1-10; Xiyu Zheng (1994): Journal of Lake Sciences 6(3), 267-275; Mianping Zheng and Xifang Liu (2010): Acta Geologica Sinica 84(11), 1585-1600
Norway
 
  • Akershus
    • Bærum (Baerum)
Hans-Jørgen Berg, NHM, Oslo 1999
Russia
 
  • Eastern-Siberian Region
    • Prebaikalia (Pribaikal'e)
      • Irkutskaya Oblast'
        • Zheleznogorsk (Korshunikha)
Mazurov, M.P., Grishina, S.N., Istomin, V.E., and Titov, A.T. (2007): Geology of Ore Deposits 49(4), 271-284.; Mazurov et al (2007) Geology of Ore Deposits, 49, 271–284.
  • Urals Region
    • Southern Urals
      • Chelyabinsk Oblast'
Cesnokov, B., Kotrly, M. and Nisanbajev, T. (1998): Brennende Abraumhalden und Aufschlüsse im Tscheljabinsker Kohlenbecken - eine reiche Mineralienküche. Mineralien-Welt, 9 (3), 54-63 (in German).
South Africa
 
  • Limpopo Province
    • Bushveld Complex
      • Burgersfort
        • Sekhukhuneland
J. W. Anthony et al.: Handbook of Mineralogy, Vol. 3 (1997)
USA
 
  • California
    • San Bernardino Co.
      • Saltus
Dunning, G.E. and J.F. Cooper (1969b) A second occurrence of antarcticite from Bristol Dry Lake, California. American Mineralogist: 54: 1018-1021; Muehle, G.H. (1971) Antarcticite from California. Mineralogical Record: 2: 171-172; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 288-290.; Ansermet, S. (2011): Aus dem Salzsee in Kühlschrank: Antarcticit vom Bristol Dry Lake, Kalifornien, USA. Lapis. 36 (11), 33-36
Mars
 
  • Aeolis quadrangle
    • Gusev Crater
SILICA-RICH DEPOSITS AND HYDRATED MINERALS AT GUSEV CRATER, MARS. M. S. Rice1, J. F.
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2017, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: October 22, 2017 05:31:33 Page generated: October 7, 2017 14:21:33
Go to top of page