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Natrojarosite

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Formula:
NaFe
 
3
(SO
 
4
)
 
2
(OH)
 
6
System:TrigonalColour:Yellow, golden brown, ...
Hardness:2½ - 3½
Member of:Alunite Group > Alunite Supergroup
Name:In allusion to its composition with dominant sodium (NATRium) and its relationship to JAROSITE.


Desborough et al. (2010) showed there is only limited solid solution between jarosite and natrojarosite at low temperatures.

Synthetic samples may be monoclinic-pseudorhombohedral (Grey et al., 2010).

Classification of Natrojarosite

IMA status:Approved
Strunz 8th edition ID:6/B.11-50
Nickel-Strunz 10th (pending) edition ID:7.BC.10

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
C : With medium-sized and large cations
Hey's CIM Ref.:25.11.1

25 : Sulphates
11 : Sulphates of Fe and other metals
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Type Occurrence of Natrojarosite

Type Locality:Soda Springs Valley, Mineral Co., Nevada, USA
Year of Discovery:1902

Physical Properties of Natrojarosite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent, Translucent
Colour:Yellow, golden brown, red-brown
Hardness (Mohs):2½ - 3½
Tenacity:Brittle
Cleavage:Perfect
On {0001}, perfect.
Fracture:Conchoidal
Density (measured):3.18 g/cm3
Density (calculated):3.29 g/cm3

Crystallography of Natrojarosite

Crystal System:Trigonal
Class (H-M):3m - Ditrigonal Pyramidal
Space Group:R3m
Cell Parameters:a = 7.33Å, c = 16.74Å
Ratio:a:c = 1 : 2.284
Unit Cell Volume:V 778.92 ų (Calculated from Unit Cell)
Morphology:Crusts comprised of minute scaly crystals; earthy masses; pulverulent. Crystals pseudo-cubic {01_12} or flattened {0001} with an hexagonal outline.
X-Ray Powder Diffraction:
Image Loading

Radiation - Copper Kα
Data Set:
Horizontal Axis: ° to ° Vertical Axis: % Source Data: Filtered Data:
Data courtesy of RRUFF project at University of Arizona, used with permission.

Optical Data of Natrojarosite

Type:Uniaxial (-)
RI values: nω = 1.830 nε = 1.750
Maximum Birefringence:δ = 0.080

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Pleochroism:Visible
Comments:Dichroic:
O = Light yellow
E = nearly Colourless

Chemical Properties of Natrojarosite

Formula:
NaFe
 
3
(SO
 
4
)
 
2
(OH)
 
6
Simplified for copy/paste:NaFe3(SO4)2(OH)6
Essential elements:Fe, H, Na, O, S
All elements listed in formula:Fe, H, Na, O, S

Relationship of Natrojarosite to other Species

Series:Forms a series with Jarosite (see here)
Member of:Alunite Group > Alunite Supergroup
Other Members of Group:

- +
Alunite
KAl
 
3
(SO
 
4
)
 
2
(OH)
 
6
Ammonioalunite
(NH
 
4
)Al
 
3
(SO
 
4
)
 
2
(OH)
 
6
Ammoniojarosite
(NH
 
4
)Fe
3+
3
(SO
 
4
)
 
2
(OH)
 
6
Argentojarosite
AgFe
3+
3
(SO
 
4
)
 
2
(OH)
 
6
Beaverite-(Cu)
Pb(Fe
3+
 
,Cu)
 
3
(SO
 
4
)
 
2
(OH)
 
6
Beaverite-(Zn)
Pb(Fe
3+
2
Zn)(SO
 
4
)
 
2
(OH)
 
6
Dorallcharite
(Tl,K)Fe
3+
3
(SO
 
4
)
 
2
(OH)
 
6
Huangite
Ca
 
0.5
Al
 
3
(SO
 
4
)
 
2
(OH)
 
6
Hydroniumjarosite
(H
 
3
O)Fe
3+
3
(SO
 
4
)
 
2
(OH)
 
6
Jarosite
KFe
3+
 
 
3
(SO
 
4
)
 
2
(OH)
 
6
Natroalunite
(Na,K)Al
 
3
(SO
 
4
)
 
2
(OH)
 
6
Natroalunite-2c
(Na,Ca
 
0.5
,K)Al
 
3
(SO
 
4
)
 
2
(OH)
 
6
Osarizawaite
Pb(Al,Cu)
 
3
(SO
 
4
)
 
2
(OH)
 
6
Plumbojarosite
Pb
 
0.5
Fe
3+
3
(SO
 
4
)
 
2
(OH)
 
6
Schlossmacherite
(H
 
3
O)Al
 
3
(SO
 
4
)
 
2
(OH)
 
6
Walthierite
Ba
 
0.5
Al
 
3
(SO
 
4
)
 
2
(OH)
 
6
Related Minerals - Nickel-Strunz Grouping):

- +
7.BC.05D'Ansite
Na
 
21
Mg(SO
 
4
)
 
10
Cl
 
3
7.BC.10Alunite
KAl
 
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Ammonioalunite
(NH
 
4
)Al
 
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Ammoniojarosite
(NH
 
4
)Fe
3+
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Argentojarosite
AgFe
3+
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Beaverite-(Cu)
Pb(Fe
3+
 
,Cu)
 
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Dorallcharite
(Tl,K)Fe
3+
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Huangite
Ca
 
0.5
Al
 
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Hydroniumjarosite
(H
 
3
O)Fe
3+
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Jarosite
KFe
3+
 
 
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Natroalunite-2c
(Na,Ca
 
0.5
,K)Al
 
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Natroalunite
(Na,K)Al
 
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Osarizawaite
Pb(Al,Cu)
 
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Plumbojarosite
Pb
 
0.5
Fe
3+
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Schlossmacherite
(H
 
3
O)Al
 
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Walthierite
Ba
 
0.5
Al
 
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Beaverite-(Zn)
Pb(Fe
3+
2
Zn)(SO
 
4
)
 
2
(OH)
 
6
7.BC.15Ye'elimite
Ca
 
4
Al
 
6
(SO
 
4
)O
 
12
7.BC.20Atlasovite
K(BiO)Cu
 
6
Fe
3+
 
(SO
 
4
)
 
5
O
 
3
Cl
7.BC.20Nabokoite
KCu
 
7
(SO
 
4
)
 
5
(Te
4+
 
O
 
3
)OCl
7.BC.25Chlorothionite
K
 
2
Cu(SO
 
4
)Cl
 
2
7.BC.30Euchlorine
KNaCu
 
3
(SO
 
4
)
 
3
O
7.BC.30Fedotovite
K
 
2
Cu
 
3
(SO
 
4
)
 
3
O
7.BC.35Kamchatkite
KCu
 
3
(SO
 
4
)
 
2
OCl
7.BC.40Piypite
K
 
2
Cu
 
2
(SO
 
4
)
 
2
O
7.BC.45Klyuchevskite
K
 
3
Cu
 
3
(Fe
3+
 
,Al)(SO
 
4
)
 
4
O
 
2
7.BC.45Alumoklyuchevskite
K
 
3
Cu
 
3
(Al,Fe
3+
 
)(SO
 
4
)
 
4
O
 
2
7.BC.50Caledonite
Pb
 
5
Cu
 
2
(SO
 
4
)
 
3
(CO
 
3
)(OH)
 
6
7.BC.55Wherryite
Pb
 
7
Cu
 
2
(SO
 
4
)
 
4
(SiO
 
4
)
 
2
(OH)
 
2
7.BC.60Mammothite
Pb
 
6
Cu
 
4
AlSb
5+
 
O
 
2
(OH)
 
16
Cl
 
4
(SO
 
4
)
 
2
7.BC.65Linarite
PbCu(SO
 
4
)(OH)
 
2
7.BC.65Schmiederite
Pb
 
2
Cu
 
2
(Se
6+
 
O
 
4
)(Se
4+
 
O
 
3
)(OH)
 
4
7.BC.65Munakataite
Pb
 
2
Cu
 
2
(Se
4+
 
O
 
3
)(SO
 
4
)(OH)
 
4
7.BC.70Chenite
Pb
 
4
Cu(SO
 
4
)
 
2
(OH)
 
6
7.BC.75Krivovichevite
Pb
 
3
Al(SO
 
4
)(OH)
 
7
7.BC.80Anhydrokainite
KMg(SO
 
4
)Cl
Related Minerals - Hey's Index Grouping:

- +
25.11.2Sideronatrite
Na
 
2
Fe(SO
 
4
)
 
2
(OH) · 3H
 
2
O
25.11.3Metasideronatrite
Na
 
2
Fe(SO
 
4
)
 
2
(OH) · H
 
2
O
25.11.4Ferrinatrite
Na
 
3
Fe(SO
 
4
)
 
3
· 3H
 
2
O
25.11.5Amarillite
NaFe(SO
 
4
)
 
2
· 6H
 
2
O
25.11.6Yavapaiite
KFe(SO
 
4
)
 
2
25.11.7Krausite
KFe(SO
 
4
)
 
2
· H
 
2
O
25.11.8Goldichite
KFe(SO
 
4
)
 
2
· 4H
 
2
O
25.11.9Jarosite
KFe
3+
 
 
3
(SO
 
4
)
 
2
(OH)
 
6
25.11.10Voltaite
K
 
2
Fe
2+
5
Fe
3+
3
Al(SO
 
4
)
 
12
· 18H
 
2
O
25.11.11Ungemachite
K
 
3
Na
 
8
Fe(SO
 
4
)
 
6
(NO
 
3
)
 
2
· 6H
 
2
O
25.11.12Metavoltine
Na
 
6
K
 
2
FeFe
 
6
(SO
 
4
)
 
12
O
 
2
· 18H
 
2
O
25.11.13Sabieite
(NH
 
4
)Fe
3+
 
(SO
 
4
)
 
2
25.11.14Ammoniojarosite
(NH
 
4
)Fe
3+
3
(SO
 
4
)
 
2
(OH)
 
6
25.11.15Clairite
(NH
 
4
)
 
2
Fe
 
3
(SO
 
4
)
 
4
(OH)
 
3
· 3H
 
2
O
25.11.16Mohrite
(NH
 
4
)
 
2
Fe(SO
 
4
)
 
2
· 6H
 
2
O
25.11.17Lonecreekite
(NH
 
4
)Fe
3+
 
(SO
 
4
)
 
2
· 12H
 
2
O
25.11.18Godovikovite
(NH
 
4
)Al(SO
 
4
)
 
2
25.11.19Botryogen
MgFe
3+
 
(SO
 
4
)
 
2
(OH) · 7H
 
2
O
25.11.21Slavíkite
(H
 
3
O
+
 
)
 
3
Mg
 
6
Fe
 
15
(SO
 
4
)
 
21
(OH)
 
18
· 98H
 
2
O
25.11.23Sturmanite
Ca
 
6
(Fe
3+
 
,Al,Mn
3+
 
)
 
2
(SO
 
4
)
 
2
[B(OH)
 
4
](OH)
 
12
· 25H
 
2
O
25.11.24Millosevichite
(Al,Fe)
 
2
(SO
 
4
)
 
3
25.11.25Aluminocopiapite
Al
 
2/3
Fe
3+
4
(SO
 
4
)
 
6
(OH)
 
2
· 20H
 
2
O
25.11.26Halotrichite
FeAl
 
2
(SO
 
4
)
 
4
· 22H
 
2
O
25.11.27Idrizite
(Mg,Fe)(Al,Fe)
 
2
(SO
 
4
)
 
3
(OH)
 
2
· 15H
 
2
O or near
25.11.28Lishizhenite
ZnFe
 
2
(SO
 
4
)
 
4
· 14H
 
2
O
25.11.29Zincovoltaite
K
 
2
Zn
 
5
Fe
3+
3
Al(SO
 
4
)
 
12
· 18H
 
2
O

Other Names for Natrojarosite

Synonyms:
Soda Copperas
Other Languages:
German:Natrojarosit
Russian:Натроярозит
Simplified Chinese:钠铁矾
黄钠铁矾
钠黄铁矾
Spanish:Natrojarosita

Other Information

Other Information:Slowly soluble in HCl.
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 Natrojarosite

Reference List:

- +
Penfield and Hillebrand (1902) American Journal of Science: 14: 211.

Cesàro (1905) Académie royale des sciences de Belgique, Brussels - Bull.: 138.

Koenig (1912) Journal of the Academy of Science, Philadelphia: 15: 425.

Simpson and Brown (1916) Journal of the Royal Society of Western Australia: 1: 45.

Larsen, E.S. (1921) The Microscopic Determination of the Nonopaque Minerals, First edition, USGS Bulletin 679.

Doelter, C. (1927) Handbuch der Mineral-chemie (in 4 volumes divided into parts): 4 [2]: 589.

Shannon and Gonyer (1927) Journal of the Washington Academy of Sciences: 17: 536.

Hintze, Carl (1929) Handbuch der Mineralogie. Berlin and Leipzig. 6 volumes: 1 [3B]: 4202.

Hendricks (1937) American Mineralogist: 22: 773.

Bandy (1938) American Mineralogist: 23: 669.

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. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 563-564.

Neues Jahrbuch für Mineralogie, Monatshefte (1976): 406.

Drouet, C. and Navrotsky, A. (2003) Synthesis, characterization, and thermochemistry of K-Na-H3O jarosites. Geochimica et Cosmochimica Acta: 67: 2063-2076.

Papike, J. J.; Burger, P. V.; Karner, J. M.; Shearer, C. K.; Lueth, V. W. (2007): Terrestrial analogs of martian jarosites: Major, minor element systematics and Na-K zoning in selected samples. American Mineralogist 92, 444-447.

Desborough, G. A., Smith, K. S., Lowers, H. A., Swayze, G. A., Hammarstrom, J. M., Diehl, S. F., Leinz, R. W. and Driscoll, R. L. (2010): Mineralogical and chemical characteristics of some natural jarosites. Geochimica et Cosmochimica Acta, 74, 1041-1056.

Grey, I.E., Scarlett, N.N.V. & Brand, H.E.A. (2010): Ordering of iron vacancies in monoclinic jarosites. American Mineralogist, 95, 1590-1593. [synth. samples]

I. E. Grey, N. V. Y. Scarlett, P. Bordet, and H. E. A. Brand (2011): Jarosite–butlerite intergrowths in non-stoichiometric jarosites: crystal chemistry of monoclinic natrojarosite–hydroniumjarosite phases. Mineral. Mag. 75, 2775-2791.

H. E. A. Brand, N. V. Y. Scarlett, I. E. Grey, R. B. Knott and N. Kirby (2013): In situ SAXS studies of the formation of sodium jarosite. J. Synchrotron Rad. 20, 626-634.

Nestola, F., Mills, S.J., Periotto, B., Scandolo, L. (2013): The alunite supergroup under high pressure: the case of natrojarosite, NaFe3(SO4)2(OH)6. Mineral. Mag. 77, 3007-3017.

Internet Links for Natrojarosite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Natrojarosite details from Handbook of Mineralogy (PDF)
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    Localities for Natrojarosite

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