Mindat Logo

Natron

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



Formula:
Na
 
2
CO
 
3
· 10H
 
2
O
System:MonoclinicColour:Colourless to white, ...
Hardness:1 - 1½
Name:In allusion to its sodium content (Latin = NATRium).
This page provides mineralogical data about Natron.

Classification of Natron

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:5/D.02-20
Nickel-Strunz 10th (pending) edition ID:5.CB.10

5 : CARBONATES (NITRATES)
C : Carbonates without additional anions, with H2O
B : With large cations (alkali and alkali-earth carbonates)
Dana 8th edition ID:15.1.2.1

15 : HYDRATED NORMAL CARBONATES
1 : A(XO3)·xH2O
Hey's CIM Ref.:11.1.7

11 : Carbonates
1 : Carbonates of the alkali metals and ammonium
mindat.org URL:http://www.mindat.org/min-2858.html
Please feel free to link to this page.

Occurrences of Natron

Geological Setting:In solution in soda lakes.

Physical Properties of Natron

Lustre:Vitreous
Diaphaneity (Transparency):Transparent, Translucent
Colour:Colourless to white, greyish, yellowish; colourless in transmitted light.
Hardness (Mohs):1 - 1½
Tenacity:Brittle
Cleavage:Distinct/Good
On {001} distinct; on {010} imperfect; on {110} in traces.
Fracture:Conchoidal
Density (measured):1.478 g/cm3

Crystallography of Natron

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:P2/m {P1 1 2/m} {P2/m} {P1 2/m 1}
Cell Parameters:a = 12.75Å, b = 9Å, c = 12.6Å
β = 115.85°
Ratio:a:b:c = 1.417 : 1 : 1.4
Unit Cell Volume:V 1,301.18 ų (Calculated from Unit Cell)
Morphology:Occurs naturally only as crystalline, granular, and columnar crusts. Artificial crystals somewhat tabular {010} with varying development of the [100] and [001] zones.
Twinning:On {001}.

Optical Data of Natron

Type:Biaxial (-)
RI values: nα = 1.405 nβ = 1.425 nγ = 1.440
2V:Measured: 71° , Calculated: 80°
Maximum Birefringence:δ = 0.035

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:r > v

Chemical Properties of Natron

Formula:
Na
 
2
CO
 
3
· 10H
 
2
O
Simplified for copy/paste:Na2CO3·10H2O
Essential elements:C, H, Na, O
All elements listed in formula:C, H, Na, O
Analytical Data:Effloresces rapidly in dry air, yielding thermonatrite, the monohydrate.

Relationship of Natron to other Species

Common Associates:
ThermonatriteTronaGaylussiteCalcite
Related Minerals - Nickel-Strunz Grouping):

- +
5.CB.05Thermonatrite
Na
 
2
CO
 
3
· H
 
2
O
5.CB.15Trona
Na
 
3
H(CO
 
3
)
 
2
· 2H
 
2
O
5.CB.20Monohydrocalcite
CaCO
 
3
· H
 
2
O
5.CB.25Ikaite
CaCO
 
3
· 6H
 
2
O
5.CB.30Pirssonite
Na
 
2
Ca(CO
 
3
)
 
2
· 2H
 
2
O
5.CB.35Gaylussite
Na
 
2
Ca(CO
 
3
)
 
2
· 5H
 
2
O
5.CB.40Chalconatronite
Na
 
2
Cu(CO
 
3
)
 
2
· 3H
 
2
O
5.CB.45Baylissite
K
 
2
Mg(CO
 
3
)
 
2
· 4H
 
2
O
5.CB.50Tuliokite
Na
 
6
BaTh(CO
 
3
)
 
6
· 6H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
11.1.1Zabuyelite
Li
 
2
CO
 
3
11.1.2Natrite
Na
 
2
CO
 
3
11.1.3Nahcolite
NaHCO
 
3
11.1.4Wegscheiderite
Na
 
5
H
 
3
(CO
 
3
)
 
4
11.1.5Thermonatrite
Na
 
2
CO
 
3
· H
 
2
O
11.1.6Trona
Na
 
3
H(CO
 
3
)
 
2
· 2H
 
2
O
11.1.8Kalicinite
KHCO
 
3
11.1.9Shortite
Na
 
2
Ca
 
2
(CO
 
3
)
 
3
11.1.10Nyerereite
Na
 
2
Ca(CO
 
3
)
 
2
11.1.11Natrofairchildite
11.1.12Zemkorite
Na
 
2
Ca(CO
 
3
)
 
2
11.1.13Pirssonite
Na
 
2
Ca(CO
 
3
)
 
2
· 2H
 
2
O
11.1.14Gaylussite
Na
 
2
Ca(CO
 
3
)
 
2
· 5H
 
2
O
11.1.15Baylissite
K
 
2
Mg(CO
 
3
)
 
2
· 4H
 
2
O
11.1.16Fairchildite
K
 
2
Ca(CO
 
3
)
 
2
11.1.17Bütschliite
K
 
2
Ca(CO
 
3
)
 
2
11.1.18Teschemacherite
(NH
 
4
)HCO
 
3

Other Names for Natron

Synonyms:
Carbonate of SodaNatronite (of Foshag et al.)Sodium CarbonateSodium carbonate decahydrateSubcarbonate of Soda
Other Languages:
Catalan:Natró
Dutch:Natron
French:Natron
Cristaux d'alkali fixe minéral
Soude carbonatée
German:Hemiprismatisches Natronsalz
Greek:Νάτρον
Νιτρου
Italian:Natron
Polish:Natron
Portuguese:Natrão
Spanish:Natrón

Other Information

Thermal Behaviour:Melting Point: 34.5°.
Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Natron

Reference List:

- +
de Lisle, Romé (1783) Cristallographie, ou description des formes propres à tous les corps du regne minéral. 4 volumes, Paris: 1: 149 (as Cristaux d'alkali fixe minéral).

Haüy, R.J. (1801) Traité de minéralogie. First edition: in 4 volumes with atlas in fol., Paris: 2: 374 (as Souda carbonatée).

Hausmann, J.F.L. (1813) Handbuch der Mineralogie 3 volumes, Göttingen. Second edition: 832 (as Soda).

Brooke (1823) Annalen der Physik, Halle, Leipzig: 6: 287 (as Subcarbonate of Soda)

Mohs, F. (1824) Grundriss der Mineralogie. 2 volumes, Dresden: 2: 27 (as Hemiprismatisches Natronsalz).

Zippe, F.X.M. (1839) Physiographie des Mineralreichs. Vienna: 2: 29.

Weisbach, Albin (1875) Synopsis mineralogical, systematische Übersicht des Mineralreiches. 78 pp., Freiberg: 7 (as Natrit).

Goldschmidt, V. (1886) Index der Krystallformen der Mineralien. 3 volumes, vol. 3, 420p.: 139.

Hintze, Carl (1916) Handbuch der Mineralogie. Berlin and Leipzig. 6 volumes: I(3A): 2778.

Goldschmidt, V. (1922) Atlas der Krystallformen. 9 volumes, atlas, and text, vol. 8: 63.

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged: 230-231.

Acta Crystallographica (1969): B25: 2656-2658.

Internet Links for Natron

Search Engines:
  • Look for Natron on Google
  • Look for Natron images on Google
  • External Links:
  • Look for Natron on Webmineral
  • Look for Natron on Athena Mineralogy
  • Look for Natron on Wikipedia
  • Look for Natron on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Natron details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • Find Natron on www.crystalclassics.co.uk
  • Search for Natron on Well-Arranged Molecules
  • Natron specimens for sale - minfind.com
  • rare and unusual minerals mainly crystallized
  • Fabre Minerals - search for Natron specimens
  • Lapis Mineral Magazin
  • The Arkenstone - Fine Minerals
  • Buy from McDougall Minerals
  • Wilensky Fine Minerals
  • Top quality minerals from Kristalle of California
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Jobs:
  • Mining & Geology Jobs
  • Localities for Natron

    The 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.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Antarctica
     
    • Buckley Island quadrangle
    Liu, T. and Bish, D.L. (2010) MINERALOGICAL COMPOSITIONS OF THE EVAPORITES AT LEWIS CLIFF ICE TONGUE, ANTARCTICA: A POTENTIAL MARTIAN ANALOG. 41st Lunar and Planetary Science Conference (2010)
    Bolivia
     
    • Potosí Department
      • Nor Lípez Province
        • San Juan
    USGS Bulletin # 1975, (1992)
    Canada
     
    • British Columbia
      • Nicola Mining Division
    Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 231.
    • Québec
      • Montérégie
        • La Vallée-du-Richelieu RCM
          • Mont Saint-Hilaire
    Horváth, L and Gault, R.A. (1990), The mineralogy of Mont Saint-Hilaire Quebec. Mineralogical Record: 21: 284-359.
    China
     
    Jiping Wang, Jianming Zhou, Xiulian Ma, and Qingtang Yang (1999): Acta Mineralogica Sinica 19(3), 315-319
      • Alxa League (Alashan Prefecture)
        • Alxa Left Banner (Alashan Zuoqi)
    Zhenmi Liu (2000): Journal of Salt Lake Research 29(3), 21-26
    Egypt
     
    • Western Desert
    Marchesini, M. & Barresi, A. (2009): I minerali di Wadi natrun, Deserto Occidentale, Egitto, Rivista Mineralogica Italiana, 4/2009, 228-258.
    Ethiopia
     
    • Oromia Province (Oromiya Province)
    No reference listed
    Germany
     
    • Rhineland-Palatinate
      • Eifel
        • Laach lake volcanic complex
          • Burgbrohl
    Abandoned puzzolane quarries located in the Brohltal, north of Laach lake
    Hungary
     
    • Bács-Kiskun Co.
      • Great Hungarian Plain
    Szakáll-Gatter-Szendrei: Mineral Species of Hungary, 2006
    • Csongrád Co.
    Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 231.
    • Hajdú-Bihar Co.
    Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 231.
    • Szabolcs-Szatmár-Bereg Co.
      • Great Hungarian Plain
    Szakáll-Gatter-Szendrei: Mineral Species of Hungary, 2006
    Italy
     
    • Campania
      • Naples Province
        • Somma-Vesuvius Complex
    Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 231; www.dinet.it/Mineral-GMC/AMI/vesuvio.html.
    • Sicily
      • Catania Province
        • Etna Volcanic Complex
    Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 231.
    Mars
     
    • Aeolis quadrangle
      • Gusev Crater
    SILICA-RICH DEPOSITS AND HYDRATED MINERALS AT GUSEV CRATER, MARS. M. S. Rice1, J. F.
    Mongolia
     
    • Gobi Desert
      • Eastern Gobi Desert
    Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 231.
    Russia
     
    • Northern Region
      • Murmanskaja Oblast'
        • Kola Peninsula
          • Khibiny Massif
    PEKOV, I.V. & NIKOLAEV, A.P. (2013) Minerals of the pegmatites and hydrothermal assemblages of the Koashva deposit (Khibiny, Kola Peninsula, Russia). Mineralogical Almanac 189(2), 7-65.
    Pekov, I.V. & Podlesnyi, A.S. (2004): Kukisvumchorr Deposit: Mineralogy of Alkaline Pegmatites and Hydrotermalites. Mineralogical Almanac, vol. 7, 140 pages + xxiv photo's pages
          • Lovozero Massif
    Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
              • Umbozero mine (Umbozerskii mine)
    Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow; Pekov, I.V. (2000): Lovozero Massif. Moscow, Ocean Pictures Ltd, 480 pp.
            • Kedykverpakhk Mt
    Mineralogical Record: 36(4): 397-416.
    Switzerland
     
    • Vaud (Waadt)
      • Bex
    Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 288.
    Turkmenistan
     
    • Balkan Province
    Evseev, A. A. (1995) Kazaknstan and Middle Asia. A brief Mineralogical Guide. World of Stone 8:24-30
    UK
     
    • England
      • Cornwall
        • St Just District
          • St Just
    Bowell, R.J. (1992): Journal of the Russell Society 4(2), 51; Golley, P. & Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
    USA
     
    • California
      • Inyo Co.
        • Owens Valley
          • Olancha
    Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 231; Chatard, T.M. (1890b), Natural soda; Its occurrence and utilization: USGS Bulletin 60: 75; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 277-278.
      • Lake Co.
        • Sulphur Creek District (Sulfur Creek District; Wilbur Springs District)
          • Clear Lake Oaks
    Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 231.
      • San Bernardino Co.
    Gale, Hoyt Stoddard (1915), Salines in the Owens, Searles, and Panamint basins, southeastern California: USGS Bulletin 580: 297; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 278.; Gale, Hoyt Stoddard (1915), Mineralogy of the Searles Lake deposits in Salines in the Owens, Searles, and Panamint basins, southeastern California: USGS Bulletin 580: 296-308
    • Colorado
      • Costilla Co.
        • San Luis Valley
    Minerals of Colorado (1997) E.B. Eckels
    • Nevada
      • Churchill Co.
        • Soda Lake District
    NBMG Spec. Pub. 31 Minerals of Nevada
    Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 231; NBMG Spec. Pub. 31 Minerals of Nevada
    NBMG Spec. Pub. 31 Minerals of Nevada
      • Humboldt Co.
    NBMG Spec. Pub. 31 Minerals of Nevada
      • Mineral Co.
    USBM Inf Circ 6941 (1938)
    • Oregon
      • Lake Co.
    Am.Min.54:1034
    • Washington
    www.dnr.wa.gov/geology/okanogan.htm.
    Mineral and/or Locality  
    Search Google  
    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
    Current server date and time: January 5, 2014 04:19:38
    Mineral and Locality Search
    Mineral:
    and/or Locality:
    Options
    Fade toolbar when not in focusFix toolbar to bottom of page
    Hide Social Media Links
    Slideshow frame delay seconds