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Metasideronatrite

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Formula:
Na2Fe(SO4)2(OH) · H2O
System:
Orthorhombic
Colour:
Golden yellow, straw ...
Hardness:
1½ - 2½
Name:
From the Greek for meta, signifying a lower hydrate and the mineral sideronatrite.
A rare sodium-iron-sulphate occurring in arid regions.

Reversibly rehydrates to sideronatrite depending on relative humidity and exposure to sunlight.

Classification of Metasideronatrite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
7.DF.20

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
F : With large and medium-sized cations
31.8.4.1

31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
8 : (AB)3(XO4)2Zq·xH2O
25.11.3

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

Year of Discovery:
1938

Occurrences of Metasideronatrite

Geological Setting:
Weathering product of pyrite in arid areas, also formed in seashore environments.

Physical Properties of Metasideronatrite

Silky
Diaphaneity (Transparency):
Transparent
Colour:
Golden yellow, straw yellow; yellow in transmitted light.
Hardness (Mohs):
1½ - 2½
Cleavage:
Perfect
Perfect on {100} {010}
Nearly perfect on {001}
Fracture:
Fibrous
Density:
2.68 g/cm3 (Measured)    2.68 g/cm3 (Calculated)

Crystallography of Metasideronatrite

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Cell Parameters:
a = 7.3959(8) Å, b = 16.0979(15) Å, c = 7.1607(8) Å
Ratio:
a:b:c = 0.459 : 1 : 0.445
Unit Cell Volume:
V 852.54 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Rare crystals are prismatic [001]. Commonly in coarse to fine crystalline aggregates.
Comment:
Space group Pbnm (non-standard setting of Pnma).

Optical Data of Metasideronatrite

Type:
Biaxial (+)
RI values:
nα = 1.543 nβ = 1.575 nγ = 1.634
2V:
Measured: 60° , Calculated: 76°
Max Birefringence:
δ = 0.091
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
strong r > v
Pleochroism:
Strong
Comments:
X = a = Colourless
Y = b = Pale yellow
Z = c = Brownish yellow

Chemical Properties of Metasideronatrite

Formula:
Na2Fe(SO4)2(OH) · H2O
Essential elements:
All elements listed in formula:
Empirical Formula:
Na4Fe23+(SO4)4(OH)2 · 3H2O

Relationship of Metasideronatrite to other Species

7.DF.05UklonskoviteNaMg(SO4)F · 2H2O
7.DF.10KainiteKMg(SO4)Cl · 3H2O
7.DF.15NatrochalciteNaCu2(SO4)2(OH) · 2H2O
7.DF.20SideronatriteNa2Fe(SO4)2(OH) · 3H2O
7.DF.25DespujolsiteCa3Mn4+(SO4)2(OH)6 · 3H2O
7.DF.25FleischeritePb3Ge(SO4)2(OH)6 · 3H2O
7.DF.25SchaurteiteCa3Ge(SO4)2(OH)6 · 4H2O
7.DF.25MallestigitePb3Sb5+(SO4)(AsO4)(OH)6 · 3H2O
7.DF.30Slavíkite(H3O+)3Mg6Fe15(SO4)21(OH)18 · 98H2O
7.DF.35MetavoltineNa6K2FeFe6(SO4)12O2 · 18H2O
7.DF.40LannoniteMg2Ca4Al4(SO4)8F8 · 24H2O
7.DF.40VlodavetsiteAlCa2(SO4)2F2Cl · 4H2O
7.DF.45PeretaiteCa(SbO)4(SO4)2(OH)2 · 2H2O
7.DF.50GordaiteNaZn4(SO4)(OH)6Cl · 6H2O
7.DF.55Clairite(NH4)2Fe3(SO4)4(OH)3 · 3H2O
7.DF.60ArzruniteCu4Pb2(SO4)(OH)4Cl6 · 2H2O (?)
7.DF.65ElyitePb4Cu(SO4)O2(OH)4 · H2O
7.DF.70YecoraiteFe33+Bi5(Te6+O4)2(Te4+O3)O9 · 9H2O
7.DF.75RiomarinaiteBi(SO4)(OH) · H2O
7.DF.80DukeiteBi243+Cr86+O57(OH)6 · 3H2O
7.DF.85XocolatliteCa2Mn24+(Te6+O6)2 · H2O
25.11.1NatrojarositeNaFe3(SO4)2(OH)6
25.11.2SideronatriteNa2Fe(SO4)2(OH) · 3H2O
25.11.4FerrinatriteNa3Fe(SO4)3 · 3H2O
25.11.5AmarilliteNaFe(SO4)2 · 6H2O
25.11.6YavapaiiteKFe(SO4)2
25.11.7KrausiteKFe(SO4)2 · H2O
25.11.8GoldichiteKFe(SO4)2 · 4H2O
25.11.9JarositeKFe3+ 3(SO4)2(OH)6
25.11.10VoltaiteK2Fe52+Fe33+Al(SO4)12 · 18H2O
25.11.11UngemachiteK3Na8Fe(SO4)6(NO3)2 · 6H2O
25.11.12MetavoltineNa6K2FeFe6(SO4)12O2 · 18H2O
25.11.13Sabieite(NH4)Fe3+(SO4)2
25.11.14Ammoniojarosite(NH4)Fe33+(SO4)2(OH)6
25.11.15Clairite(NH4)2Fe3(SO4)4(OH)3 · 3H2O
25.11.16Mohrite(NH4)2Fe(SO4)2 · 6H2O
25.11.17Lonecreekite(NH4)Fe3+(SO4)2 · 12H2O
25.11.18Godovikovite(NH4)Al(SO4)2
25.11.19BotryogenMgFe3+(SO4)2(OH) · 7H2O
25.11.21Slavíkite(H3O+)3Mg6Fe15(SO4)21(OH)18 · 98H2O
25.11.23SturmaniteCa6(Fe3+,Al,Mn3+)2(SO4)2[B(OH)4](OH)12 · 25H2O
25.11.24Millosevichite(Al,Fe)2(SO4)3
25.11.25AluminocopiapiteAl2/3Fe43+(SO4)6(OH)2 · 20H2O
25.11.26HalotrichiteFeAl2(SO4)4 · 22H2O
25.11.27Idrizite(Mg,Fe)(Al,Fe)2(SO4)3(OH)2 · 15H2O or near
25.11.28LishizheniteZnFe2(SO4)4 · 14H2O
25.11.29ZincovoltaiteK2Zn5Fe33+Al(SO4)12 · 18H2O

Other Names for Metasideronatrite

Name in Other Languages:

Other Information

Other Information:
Decomposes in boiling water and is insoluble in cold water. Soluble in dilute acids. Reversibly alters to sideronatrite depending upon humidity and light exposure.
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 Metasideronatrite

Reference List:
Bandy (1938) American Mineralogist: 23: 733.

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.: 603-604.

Scordari, F., Stasi, F., and Milella, G. (1982) Concerning metasideronatrite. Neues Jahrbuch für Mineralogie, Monatshefte (1982): 8: 341-347.

Kolitsch, U. (2008): Unpubl. crystal-structure determination [Pnma cell: 16.005, 7.124, 7.351 A; model in good agreement with Scordari et al. (2010)].

Scordari, F., Ventruti, G., Stasi, F. (2010): Metasideronatrite: crystal structure and its relationship with sideronatrite. American Mineralogist, 95, 329-334.

Internet Links for Metasideronatrite

Localities for Metasideronatrite

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 for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
Chile (TL)
 
  • Antofagasta Region
    • Antofagasta Province
NJMM (1982), 255
tested by Ron Peterson Queens University, Kingston Ontario
    • El Loa Province
      • Calama
        • Chuquicamata District
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.: 457, 604; Handbook of Mineralogy - Anthony, Bideaux, Bladh, Nichols.
  • Tarapacá Region
    • El Tamarugal Province
      • Pampa del Tamarugal
Peter G. Seroka collection
China
 
  • Xinjiang Autonomous Region
    • Hami Prefecture (Kumul Prefecture; Qumul Prefecture)
      • Hami Co. (Kumul Co.; Qumul Co.)
Yingxia Xu, Kezhang Qin, Kunshou Ding, Jinxiang Li, Yu Miao, Tonghui Fang, Xingwang Xu, Daming Li, and Xiuquan Luo (2008): Acta Petrologica Sinica 24(10), 2371-2383
Germany
 
  • Saxony
    • Dresden
Thalheim, K.; Reichel, W. & Witzke, T. (1991): Die Minerale des Döhlener Beckens.- Schriften des Staatlichen Museums für Mineralogie und Geologie zu Dresden, Nr. 3
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
      • Lavrion District Mines
        • Sounion area
          • Sounion Mines
Kolitsch, U., Rieck, B., Brandstätter, F., Schreiber, F., Fabritz, K. H., Blaß, G. & Gröbner, J. (2014): Neufunde aus dem altem Bergbau und den Schlacken von Lavrion (I). Mineralien-Welt 25 (1), 60-75 (in German).
Ireland
 
  • Co. Kerry
Moreton et al. (1995) Irish J. Earth Sciences, 14, 1-5..
Namibia
 
  • Erongo Region
    • Karibib District
      • Spitzkopje Area
NHM Vienna collection (Uwe Kolitsch SXRD analysis; to be published)
Spain
 
  • Andalusia
    • Almería
      • Níjar
A. Arribas, F. Hernández, M. A. Fernández Périz, J. Gröbner, G. Leal (2005): Rodalquilar - El oro del capo del ágata. BOCAMINA 15, 12-88.
G. Leal, Antonio Arribas, Miguel A. Fernandez, Joachim Grobner, Francisco Hernandez (2005): Rodalquilar : El oro del Cabo del Agata. Bocamina, 15, 14-79.
Switzerland
 
  • Vaud (Waadt)
    • Bex
Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 272.
UK
 
  • England
    • Hampshire
      • Milton
MinMag 63:757
USA
 
  • Arizona
    • Coconino Co.
      • Cameron District
Bollin, E. M., & Kerr, P. F. (1958). Uranium mineralization near Cameron, Arizona. In Guidebook of the Black Mesa Basin, northern Arizona: New Mexico Geological Society, 9th Field Conference Society Guidebook (Vol. 9, pp. 161-168).
          • Huskon Mines
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 295.
  • Colorado
    • Montrose Co.
      • Bull Canyon District
        • Radium Hill Group
Minerals of Colorado (1997) E.B. Eckels
  • Nevada
    • Eureka Co.
      • Beowawe District
NBMG Spec. Pub. 31 Minerals of Nevada
      • Crescent Valley
Minerals of Nevada, by Castor and Ferdock, 2004; p. 117
Mineral and/or Locality  
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