Metasideronatrite
A valid IMA mineral species - grandfathered
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About Metasideronatrite
Formula:
Na2Fe(SO4)2(OH) · H2O
Colour:
Golden yellow, straw yellow; yellow in transmitted light.
Lustre:
Silky
Hardness:
1½ - 2½
Specific Gravity:
2.68
Crystal System:
Orthorhombic
Name:
From the Greek for meta, signifying a lower hydrate and the mineral sideronatrite.
Type Locality:
A rare sodium-iron-sulphate occurring in arid regions.
Reversibly rehydrates to sideronatrite depending on relative humidity and exposure to sunlight.
Reversibly rehydrates to sideronatrite depending on relative humidity and exposure to sunlight.
Unique Identifiers
Mindat ID:
2685
Long-form identifier:
mindat:1:1:2685:3
IMA Classification of Metasideronatrite
Approved, 'Grandfathered' (first described prior to 1959)
IMA Formula:
Na2Fe3+(S6+O4)2(OH)·H2O
First published:
1938
Classification of Metasideronatrite
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
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
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
25 : Sulphates
11 : Sulphates of Fe and other metals
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Mnat | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Metasideronatrite
Silky
Transparency:
Transparent
Colour:
Golden yellow, straw yellow; yellow in transmitted light.
Hardness:
1½ - 2½ on Mohs scale
Cleavage:
Perfect
Perfect on {100} {010}.
Nearly perfect on {001}.
Perfect on {100} {010}.
Nearly perfect on {001}.
Fracture:
Fibrous
Density:
2.68 g/cm3 (Measured) 2.68 g/cm3 (Calculated)
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
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Moderate
Dispersion:
strong r > v
Optical Extinction:
Parallel. X = a; Y = b; Z = c.
Pleochroism:
Strong
Comments:
X = Colourless, Y = Pale yellow, Z = Brownish yellow.
Chemistry of Metasideronatrite
Mindat Formula:
Na2Fe(SO4)2(OH) · H2O
Element Weights:
Crystallography of Metasideronatrite
Crystal System:
Orthorhombic
Class (H-M):
mmm(2/m2/m2/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 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).
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0005014 | Metasideronatrite | Ventruti G, Stasi F, Scordari F (2010) Metasideronatrite: crystal structure and its relation with sideronatrite American Mineralogist 95 329-334 |  | 2010 | Sierra Gorda, Chile | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.680 Å | (100) |
| 8.05 Å | (90) |
| 6.682 Å | (70) |
| 2.749 Å | (50) |
| 2.665 Å | (50) |
| 3.485 Å | (40) |
| 3.994 Å | (30) |
Comments:
Chuquicamata, Chile. Similar data given in Cesbron (1964) and Finney (1973)
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47b : [Sulfates and sulfites] |
Geological Setting:
Weathering product of pyrite in arid areas, also formed in seashore environments.
Type Occurrence of Metasideronatrite
Place of Conservation of Type Material:
No designated type specimen.
Other Language Names for Metasideronatrite
Common Associates
Associations Based on Photo Data:
| 2 photos of Metasideronatrite associated with Sideronatrite | Na2Fe(SO4)2(OH) · 3H2O |
| 2 photos of Metasideronatrite associated with Destinezite | Fe3+2(PO4)(SO4)(OH) · 6H2O |
| 2 photos of Metasideronatrite associated with Kröhnkite | Na2Cu(SO4)2 · 2H2O |
| 2 photos of Metasideronatrite associated with Metavoltine | K2Na6Fe2+Fe3+6O2(SO4)12 · 18H2O |
| 2 photos of Metasideronatrite associated with Tamarugite | NaAl(SO4)2 · 6H2O |
| 1 photo of Metasideronatrite associated with Halotrichite | Fe2+Al2(SO4)4 · 22H2O |
| 1 photo of Metasideronatrite associated with Native Sulphur | S8 |
| 1 photo of Metasideronatrite associated with Antofagastaite | Na2Ca(SO4)2 · 1.5H2O |
| 1 photo of Metasideronatrite associated with Aubertite | CuAl(SO4)2Cl · 14H2O |
Related Minerals - Strunz-mindat Grouping
| 7.DF. | Siligiite | [Pb(H2O)5(SO4)][Zn9(OH)18] |
| 7.DF. | Alcaparrosaite | K3Ti4+Fe3+(SO4)4O(H2O)2 |
| 7.DF. | Flaggite | Pb4Cu2+4Te6+2(SO4)2O11(OH)2(H2O) |
| 7.DF. | Bairdite | Pb2Cu2+4Te6+2O10(OH)2(SO4) · H2O |
| 7.DF. | Tzeferisite | CaZn8(SO4)2(OH)12Cl2(H2O)9 |
| 7.DF. | Cherokeeite | [Pb2Zn(OH)4](SO4) · H2O |
| 7.DF. | Ammoniomathesiusite | (NH4)5(UO2)4(SO4)4(VO5) · 4H2O |
| 7.DF. | Sigogglinite | [Pb6Zn(OH)8]2(SO4)6 · (H2O)8-x |
| 7.DF.X | Blueridgeite | [Pb8Zn3Cu2+(OH)16](SO4)2(S2O3)2 · 2H2O |
| 7.DF. | Erssonite | Mg7Fe3+2(OH)18[Ca(H2O)6](SO4)2 · 12H2O |
| 7.DF. | Poellmannite | Ca6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2O |
| 7.DF. | Carlsonite | (NH4)5Fe3+3O(SO4)6 · 7H2O |
| 7.DF. | Cuprocherokeeite | [Pb8Zn3Cu2+(OH)16](SO4)4 · 4H2O |
| 7.DF. | Haywoodite | [Pb(H2O)10][Zn12(OH)20(H2O)(SO4)3] |
| 7.DF. | Chromschieffelinite | Pb10Te6+6O20(OH)14(CrO4)(H2O)5 |
| 7.DF.05 | Uklonskovite | NaMg(SO4)F · 2H2O |
| 7.DF.10 | Kainite | KMg(SO4)Cl · 3H2O |
| 7.DF.10 | Kaliochalcite | KCu2(SO4)2[(OH)(H2O)] |
| 7.DF.15 | Natrochalcite | NaCu2(SO4)2(OH) · 2H2O |
| 7.DF.17 | Genplesite | Ca3Sn(SO4)2(OH)6 · 3H2O |
| 7.DF.17 | 'Unnamed (Ba-Sb Silicate-Sulphate-Hydroxide-Hydrate)' | Ba3Sb5+[(Si,S)O3(OH)]2(OH,O)6 · 3H2O |
| 7.DF.20 | Sideronatrite | Na2Fe(SO4)2(OH) · 3H2O |
| 7.DF.25 | Fleischerite | Pb3Ge(SO4)2(OH)6 · 3H2O |
| 7.DF.25 | Mallestigite | Pb3Sb5+(SO4)(AsO4)(OH)6 · 3H2O |
| 7.DF.25 | Schaurteite | Ca3Ge(SO4)2(OH)6 · 4H2O |
| 7.DF.25 | Despujolsite | Ca3Mn4+(SO4)2(OH)6 · 3H2O |
| 7.DF.30 | Slavíkite | (H3O+)3Mg6Fe15(SO4)21(OH)18 · 98H2O |
| 7.DF.35 | Metavoltine | K2Na6Fe2+Fe3+6O2(SO4)12 · 18H2O |
| 7.DF.40 | Lannonite | Mg2Ca4Al4(SO4)8F8 · 24H2O |
| 7.DF.40 | Vlodavetsite | AlCa2(SO4)2F2Cl · 4H2O |
| 7.DF.45 | Peretaite | Ca(SbO)4(SO4)2(OH)2 · 2H2O |
| 7.DF.50 | Gordaite | NaZn4(SO4)(OH)6Cl · 6H2O |
| 7.DF.50 | Calamaite | Na2TiO(SO4)2 · 2H2O |
| 7.DF.52 | Huizingite-(Al) | [(NH4)9(SO4)2][(Al,Fe3+)3(OH)2(H2O)4(SO4)6] |
| 7.DF.52 | Scordariite | K8(Fe3+0.67◻0.33)[Fe3+3O(SO4)6]2 · 14H2O |
| 7.DF.55 | Clairite | (NH4)2Fe3(SO4)4(OH)3 · 3H2O |
| 7.DF.55 | Giacovazzoite | K5Fe3+3O(SO4)6 · 10H2O |
| 7.DF.57 | Magnanelliite | K3Fe3+2(SO4)4(OH)(H2O)2 |
| 7.DF.60 | Arzrunite | Cu4Pb2(SO4)(OH)4Cl6 · 2H2O (?) |
| 7.DF.60 | Evdokimovite | Tl4(VO)3(SO4)5(H2O)5 |
| 7.DF.62 | Bridgesite-(Ce) | CaCe2Cu6(SO4)4(OH)12 · 8H2O |
| 7.DF.65 | Elyite | Pb4Cu(SO4)O2(OH)4 · H2O |
| 7.DF.70 | Yecoraite | Fe3+3Bi5(Te6+O4)2(Te4+O3)O9 · 9H2O |
| 7.DF.70 | Lautenthalite | PbCu4(SO4)2(OH)6 · 3H2O |
| 7.DF.75 | Riomarinaite | Bi(SO4)(OH) · H2O |
| 7.DF.80 | Dukeite | Bi3+24Cr6+8O57(OH)6 · 3H2O |
Other Information
Notes:
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.
Internet Links for Metasideronatrite
mindat.org URL:
https://www.mindat.org/min-2685.html
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References for Metasideronatrite
Reference List:
Bandy, Mark C. (1938) Mineralogy of three sulphate deposits of northern Chile. American Mineralogist, 23 (11) 669-760 p.733
Cesbron, Fabien (1964) Contribution à la Minéralogie des sulfates de fer hydratés. Bulletin de Minéralogie, 87 (2) 125-143 doi:10.3406/bulmi.1964.5721
Finney, Joseph J. (1973) Unit cell and X-ray-powder data for metasideronatrite. American Mineralogist, 58 (11-12) 1080-1081
Localities for Metasideronatrite
Showing 38 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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).
All localities listed without proper references should be considered as questionable.
Chile | |
| SEM-EDS and XRD by Igor V. Pekov |
| SEM-EDS and XRD by Igor V. Pekov | |
| Gerhard Möhn collection | |
| Scordari et al. (1982) |
| Carlton Davis | |
| |
| tested by Ron Peterson Queens University | |
| Bandy (1938) +2 other references |
| Gerhard Möhn collection |
| Peter G. Seroka collection |
China | |
| Yingxia Xu et al. (2008) |
Czech Republic | |
| Matýsek et al. (2014) |
| Matýsek et al. (2014) |
| Matýsek et al. (2014) |
| Matýsek et al. (2014) |
Germany | |
| Thalheim +1 other reference |
Greece | |
| Rieck et al. (2018) |
| Rieck (n.d.) |
| Natural History Museum Vienna collection (Uwe Kolitsch, SXRD-analysed) |
| Rieck et al. (2022) |
| Kolitsch et al. (2014) |
Ireland | |
| Moreton et al. (1995) |
Italy | |
| Menchetti et al. (2015) |
Lebanon | |
| Kruszewski (2019) |
Namibia | |
| NHM Vienna collection (Uwe Kolitsch SXRD analysis) +1 other reference |
Spain | |
| Calvo Rebollar et al. (2022) |
| A. Arribas et al. (2005) |
| Sainz de Baranda Graf et al. (2023) | |
| G. Leal et al. (2005) | |
Switzerland | |
| Stalder et al. (1998) |
UK | |
| MinMag 63:757 |
USA | |
| Bollin et al. (1958) |
| Anthony et al. (1995) |
| Scarborough (1981) | |
| Eckel et al. (1997) |
| Castor et al. (2004) |
| p. 117 +1 other reference |
| Kampf et al. (2018) |
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María Josefa Mine, Rodalquilar, Níjar, Almería, Andalusia, Spain