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Mereiterite

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Dr. Kurt Mereiter
Formula:
K2Fe(SO4)2 · 4H2O
Colour:
Pale yellow
Lustre:
Vitreous, Greasy
Hardness:
2½ - 3
Crystal System:
Monoclinic
Member of:
Name:
Named after Prof. Dr. Kurt Mereiter, Technical University of Vienna, in honour of his contributions to the crystal chemistry of various iron sulfates.
The iron analogue of Leonite.

May possibly appear as a dehydration product of the (unstable at room temperature) picromerite-type hexahydrate (a Tutton salt).




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Classification of MereiteriteHide

Approved
7.CC.55

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
C : Sulfates (selenates, etc.) without additional anions, with H2O
C : With medium-sized and large cations
28.4.3.3

28 : ANHYDROUS ACID AND NORMAL SULFATES
4 : Miscellaneous

Physical Properties of MereiteriteHide

Vitreous, Greasy
Colour:
Pale yellow
Streak:
White
Hardness:
2½ - 3 on Mohs scale

Optical Data of MereiteriteHide

Type:
Biaxial (+)
RI values:
nα = 1.497 nβ = 1.501 nγ = 1.509
2V:
Measured: 73° , Calculated: 72°
Max Birefringence:
δ = 0.012
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
very weak

Chemical Properties of MereiteriteHide

Formula:
K2Fe(SO4)2 · 4H2O
IMA Formula:
K2Fe2+(SO4)2 · 4H2O

Crystallography of MereiteriteHide

Crystal System:
Monoclinic
Cell Parameters:
a = 11.84 Å, b = 9.55 Å, c = 9.94 Å
β = 94.87°
Ratio:
a:b:c = 1.24 : 1 : 1.041
Unit Cell V:
1,119.88 ų (Calculated from Unit Cell)

Type Occurrence of MereiteriteHide

Synonyms of MereiteriteHide

Other Language Names for MereiteriteHide

Relationship of Mereiterite to other SpeciesHide

Member of:
Other Members of this group:
LeoniteK2Mg(SO4)2 · 4H2OMon. 2/m

Related Minerals - Nickel-Strunz GroupingHide

7.CC.AndychristyitePbCu2+Te6+O5(H2O)Tric. 1 : P1
7.CC.05KrausiteKFe(SO4)2 · H2OMon. 2/m : P21/m
7.CC.10TamarugiteNaAl(SO4)2 · 6H2OMon. 2/m
7.CC.15KaliniteKAl(SO4)2 · 11H2O Not confirmedMon. 2/m : B2/b
7.CC.15MendoziteNaAl(SO4)2 · 11H2OMon. 2/m
7.CC.20Lonecreekite(NH4)Fe3+(SO4)2 · 12H2OIso.
7.CC.20Alum-(K)KAl(SO4)2 · 12H2OIso. m3 (2/m 3)
7.CC.20Alum-(Na)NaAl(SO4)2 · 12H2O
7.CC.20Tschermigite(NH4)Al(SO4)2 · 12H2OIso. m3 (2/m 3) : Pa3
7.CC.20LanmuchangiteTl+Al(SO4)2 · 12H2OIso. m3 (2/m 3) : Pa3
7.CC.25VoltaiteK2Fe2+5Fe3+3Al(SO4)12 · 18H2OIso. m3m (4/m 3 2/m) : Fd3c
7.CC.25ZincovoltaiteK2Zn5Fe3+3Al(SO4)12 · 18H2OIso. m3m (4/m 3 2/m) : Fd3c
7.CC.25PertlikiteK2(Fe2+,Mg)2Mg4Fe3+2Al(SO4)12 · 18H2OTet. 4/mmm (4/m 2/m 2/m) : I41/acd
7.CC.25Ammoniomagnesiovoltaite(NH4)2Mg2+5Fe3+3Al(SO4)12 · 18H2OIso. m3m (4/m 3 2/m) : Fd3c
7.CC.30KröhnkiteNa2Cu(SO4)2 · 2H2OMon. 2/m : P21/b
7.CC.35FerrinatriteNa3Fe(SO4)3 · 3H2OTrig. 3 : P3
7.CC.40GoldichiteKFe(SO4)2 · 4H2OMon. 2/m : P21/b
7.CC.45LöweiteNa12Mg7(SO4)13 · 15H2OTrig.
7.CC.50BlöditeNa2Mg(SO4)2 · 4H2OMon. 2/m
7.CC.50NickelblöditeNa2(Ni,Mg)(SO4)2 · 4H2O
7.CC.50ChangoiteNa2Zn(SO4)2 · 4H2OMon. 2/m : P21/b
7.CC.50ZincblöditeNa2Zn(SO4)2 · 4H2O
7.CC.55LeoniteK2Mg(SO4)2 · 4H2OMon. 2/m
7.CC.60Boussingaultite(NH4)2Mg(SO4)2 · 6H2OMon. 2/m : P21/b
7.CC.60CyanochroiteK2Cu(SO4)2 · 6H2OMon. 2/m
7.CC.60Mohrite(NH4)2Fe(SO4)2 · 6H2OMon. 2/m : P21/b
7.CC.60Nickelboussingaultite(NH4)2Ni(SO4)2 · 6H2O
7.CC.60PicromeriteK2Mg(SO4)2 · 6H2OMon. 2/m
7.CC.65PolyhaliteK2Ca2Mg(SO4)4 · 2H2OTric. 1
7.CC.70LeightoniteK2Ca2Cu(SO4)4 · 2H2OTric.
7.CC.75AmarilliteNaFe(SO4)2 · 6H2OMon. 2/m : B2/b
7.CC.80KonyaiteNa2Mg(SO4)2 · 5H2OMon. 2/m : P21/b
7.CC.85WattevilleiteNa2Ca(SO4)2 · 4H2O (?)Orth.

Related Minerals - Dana Grouping (8th Ed.)Hide

28.4.3.1Palmierite(K,Na)2Pb(SO4)2Trig. 3m (3 2/m) : R3m
28.4.3.2KalistrontiteK2Sr(SO4)2Trig.

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 MereiteriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Mineralogical Record: 27: 304.
European Journal of Mineralogy (1995): 7: 559-566.

Internet Links for MereiteriteHide

Localities for MereiteriteHide

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.
Greece (TL)
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
      • Lavrion District Mines
        • Agios Konstantinos [St Constantine] (Kamariza)
          • Kamariza Mines (Kamareza Mines)
            • Hilarion area
Giester, G; Rieck, B: Mereiterite, K2Fe[SO4]2•4H2O, a new leonite-type mineral from the Lavrion mining district, Greece. European Journal of Mineralogy 7 (1995), 559-566 [MinRec 27:304]
Nicaragua
 
  • León Department
Hynek, B. M., McCollom, T. M., Marcucci, E. C., Brugman, K., & Rogers, K. L. (2013). Assessment of environmental controls on acid‐sulfate alteration at active volcanoes in Nicaragua: Applications to relic hydrothermal systems on Mars. Journal of Geophysical Research: Planets, 118(10), 2083-2104.
Mineral and/or Locality  
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