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Erythrosiderite

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About ErythrosideriteHide

Formula:
K2[Fe3+Cl5(H2O)]
Colour:
Ruby-red to red, brownish red; brown-red or yellowish in transmitted light.
Lustre:
Vitreous
Specific Gravity:
2.372
Crystal System:
Orthorhombic
Name:
From the Greek έρυθρός, red, and σίδηρος, iron, in allusion to the color and iron content.
Isostructural with:
Compare javorieite.


Classification of ErythrosideriteHide

Approved, 'Grandfathered' (first described prior to 1959)
3.CJ.10

3 : HALIDES
C : Complex halides
J : With MX6 complexes; M = Fe, Mn, Cu
11.4.1.1

11 : HALIDE COMPLEXES
4 : AmBX5·xH2O
8.11.5

8 : Halides - Fluorides, Chlorides, Bromides and Iodides; also Fluoborates and Fluosilicates
11 : Halides of Fe and Ni

Physical Properties of ErythrosideriteHide

Vitreous
Colour:
Ruby-red to red, brownish red; brown-red or yellowish in transmitted light.
Cleavage:
Perfect
On {201} and {011}.
Density:
2.372 g/cm3 (Measured)    

Optical Data of ErythrosideriteHide

Type:
Biaxial (+)
RI values:
nα = 1.715 nβ = 1.750 nγ = 1.800
2V:
Measured: 62° , Calculated: 82°
Max Birefringence:
δ = 0.085
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
strong

Chemical Properties of ErythrosideriteHide

Formula:
K2[Fe3+Cl5(H2O)]
IMA Formula:
K2Fe3+Cl5 · H2O
Common Impurities:
Al

Crystallography of ErythrosideriteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pnma
Cell Parameters:
a = 9.7 Å, b = 13.58 Å, c = 7.01 Å
Ratio:
a:b:c = 0.714 : 1 : 0.516
Unit Cell V:
923.40 ų (Calculated from Unit Cell)
Morphology:
Crystals somewhat tabular {100}.
Twinning:
On [21_1] and [20_1] (artificial material).

Type Occurrence of ErythrosideriteHide

Geological Setting of Type Material:
Active volcanic fumaroles.
Associated Minerals at Type Locality:

Other Language Names for ErythrosideriteHide

Related Minerals - Nickel-Strunz GroupingHide

3.CJ.05ChlormanganokaliteK4[MnCl6]Trig.
3.CJ.05RinneiteK3Na[FeCl6]Trig. 3m (3 2/m) : R3c
3.CJ.10Kremersite(NH4,K)2[Fe3+Cl5(H2O)]Orth. mmm (2/m 2/m 2/m)
3.CJ.15MitscherlichiteK2CuCl4 · 2H2OTet. 4/mmm (4/m 2/m 2/m)
3.CJ.20DouglasiteK2[Fe2+Cl4(OH2)2]Mon.
3.CJ.25Redikortsevite(NH4)MgCl3 · 6H2OOrth.
3.CJ.30Zirklerite(Fe,Mg,Ca)9Al4Cl18(OH)12 · 14H2O (?)Trig.

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

11.4.1.2Kremersite(NH4,K)2[Fe3+Cl5(H2O)]Orth. mmm (2/m 2/m 2/m)

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

8.11.1MolysiteFeCl3Hex.
8.11.2HydromolysiteFeCl3 · 6H2O
8.11.3RokühniteFeCl2 · 2H2OMon.
8.11.4DouglasiteK2[Fe2+Cl4(OH2)2]Mon.
8.11.6RinneiteK3Na[FeCl6]Trig. 3m (3 2/m) : R3c
8.11.7Kremersite(NH4,K)2[Fe3+Cl5(H2O)]Orth. mmm (2/m 2/m 2/m)
8.11.8IowaiteMg6Fe3+2(OH)16Cl2 · 4H2OTrig. 3m (3 2/m) : R3m
8.11.9NickelbischofiteNiCl2 · 6H2OMon.
8.11.10Lawrencite(Fe2+,Ni)Cl2Trig. 3m (3 2/m) : R3m

Other InformationHide

Notes:
Very deliquescent. Readily soluble in water.
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 ErythrosideriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Scacchi (1872) Reale accademia delle scienze fisische e matematiche, Naples, Rendus: 210.
Scacchi, A. (1874) Contribuzioni mineralogiche per servire all Storia dell’ Incendio Vesuviano, del mese di Aprile, Part 2: 42.
Gossner (1905) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 40: 73 (artif. mat.)
Merwin in: Larsen, E.S. and Berman, H. (1934) The Microscopic Determination of the Nonopaque Minerals, Second edition, USGS Bulletin 848: 135.
Zambonini, Ferruccio (1935) Mineralogia Vesuviana, second edition with Quercigh, 463 pp., Naples: 107.
Bellanca, A. (1948) Periodico di Mineralogia – Roma: 17: 1.
Bellanca, A. (1948) La struttura dell'eritrosiderite. Periodico di Mineralogia – Roma: pp. 59-72.
Palache, Charles, Harry Berman & Clifford Frondel (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Seventh edition, Volume II: 101-103.
National Bureau of Standards (U.S.) Monograph 25, section 14: 27.

Internet Links for ErythrosideriteHide

Localities for ErythrosideriteHide

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.
Germany
 
  • Hesse
    • Werra valley
      • Heringen
A.Dietrich, G.Behnke and T.Thonelt (2004): Kristalle aus der Tiefe - Eine Auswahl von Mineralen aus Kali- und Steinsalzlagerstatten. Kali und Steinsalz:3.p.6-14.
      • Phillippsthal
A.Dietrich, G.Behnke and T.Thonelt (2004): Kristalle aus der Tiefe - Eine Auswahl von Mineralen aus Kali- und Steinsalzlagerstatten. Kali und Steinsalz:3.p.6-14.
  • Saxony-Anhalt
    • Stassfurt Potash deposit
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: 102.
Iran
 
  • Hormozgan Province
Talbot, C., Farhadi, R., and Aftabi, P. (2009): Ore Geology Reviews 35, 352-366.
Italy (TL)
 
  • 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: 102; Lapis (1994): 5: 13-23, 58.
  • 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: 102; AA. VV., 1996. Collezionare minerali. Hobby & Work.
Poland
 
  • Upper Silesia (Śląskie)
    • Upper Silesian Coal Basin
      • Rybnik Coal Area
        • Radlin
Łukasz Kruszewski (2012) Unique chloride assemblage of exhalative origin from burning coal-mining dump in Radlin (Rybnik Coal Area, S Poland). Mineralogical Society of Poland Special Papers 40
USA
 
  • New Mexico
Northrop, Minerals of New Mexico, 3rd. rev. ed. (1996)
Mineral and/or Locality  
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