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Löllingite

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Formula:
FeAs
 
2
System:OrthorhombicColour:Steel gray to silver ...
Lustre:MetallicHardness:5 - 5½
Member of:Löllingite Group
Name:Named in 1845 by Wilhelm Karl von Haidinger for the type locality at Wolfbau Mine, Lölling District, Hüttenberger Erzberg, Hüttenberg, Friesach - Hüttenberg area, Carinthia, Austria.


Löllingite Group.

Forms a series with safflorite and can also contain considerable amounts of nickel.

Classification of Löllingite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:2/D.23-10
Nickel-Strunz 10th (pending) edition ID:2.EB.15a

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
E : Metal Sulfides, M: S <= 1:2
B : M:S = 1:2, with Fe, Co, Ni, PGE, etc.
Dana 8th edition ID:2.12.2.9

2 : SULFIDES
12 : AmBnXp, with (m+n):p = 1:2
Hey's CIM Ref.:3.9.11

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
9 : Sulphides etc. of Fe
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Type Occurrence of Löllingite

Type Locality:Wolfbau Mine, Lölling District, Hüttenberger Erzberg, Hüttenberg, Friesach - Hüttenberg area, Carinthia, Austria

Physical Properties of Löllingite

Lustre:Metallic
Diaphaneity (Transparency):Opaque
Colour:Steel gray to silver white
Streak:Greyish black
Hardness (Mohs):5 - 5½
Hardness (Vickers):VHN100=859 - 920 kg/mm2
Cleavage:Distinct/Good
Distinct on {010}{101}
Density (measured):7.43 g/cm3
Density (calculated):7.472 g/cm3

Crystallography of Löllingite

Crystal System:Orthorhombic
Class (H-M):mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:Pnnm
Cell Parameters:a = 5.16Å, b = 5.93Å, c = 3.05Å
Ratio:a:b:c = 0.87 : 1 : 0.514
Unit Cell Volume:V 93.33 ų (Calculated from Unit Cell)
Z:2
Morphology:Prismatic
Twinning:On {001}, possibly trillings, polysynthetic on {101}
Crystal Atlas:
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Löllingite - {110}, {101}, {011}, modified
Löllingite - Prismatic {110}
Löllingite - Prismatic {011}

About Crystal Atlas

The mindat.org Crystal Atlas allows you to view a selection of crystal drawings of real and idealised crystal forms for this mineral and, in certain cases, 3d rotating crystal objects. The 3d models and HTML5 code are kindly provided by www.smorf.nl.

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X-Ray Powder Diffraction:
d-spacingIntensity
2.605 (100)
2.599 (60)
2.532 (60)
2.421 (30)
2.331 (65)
1.854 (30)
1.634 (35)

Optical Data of Löllingite

Type:Anisotropic
Anisotropism:Strong

Chemical Properties of Löllingite

Formula:
FeAs
 
2
Simplified for copy/paste:FeAs2
Essential elements:As, Fe
All elements listed in formula:As, Fe
Common Impurities:Bi

Relationship of Löllingite to other Species

Member of:Löllingite Group
Other Members of Group:

- +
Related Minerals - Nickel-Strunz Grouping):

- +
2.EB.05aAurostibite
AuSb
 
2
2.EB.05bBambollaite
Cu(Se,Te)
 
2
2.EB.05aCattierite
CoS
 
2
2.EB.05aErlichmanite
OsS
 
2
2.EB.05aFukuchilite
Cu
 
3
FeS
 
8
2.EB.05aGeversite
PtSb
 
2
2.EB.05aHauerite
MnS
 
2
2.EB.05aInsizwaite
Pt(Bi,Sb)
 
2
2.EB.05aKrut'aite
CuSe
 
2
2.EB.05aLaurite
RuS
 
2
2.EB.05aPenroseite
(Ni,Co,Cu)Se
 
2
2.EB.05aPyrite
FeS
 
2
2.EB.05aSperrylite
PtAs
 
2
2.EB.05aTrogtalite
CoSe
 
2
2.EB.05aVaesite
NiS
 
2
2.EB.05aVillamaninite
(Cu,Ni,Co,Fe)S
 
2
2.EB.05aDzharkenite
FeSe
 
2
2.EB.05aGaotaiite
Ir
 
3
Te
 
8
2.EB.10bAlloclasite
Co
 
1-x
Fe
 
x
AsS
2.EB.10dCostibite
CoSbS
2.EB.10aFerroselite
FeSe
 
2
2.EB.10aFrohbergite
FeTe
 
2
2.EB.10cGlaucodot
(Co
 
0.50
Fe
 
0.50
)AsS
2.EB.10aKullerudite
NiSe
 
2
2.EB.10aMarcasite
FeS
 
2
2.EB.10aMattagamite
CoTe
 
2
2.EB.10eParacostibite
CoSbS
2.EB.10ePararammelsbergite
NiAs
 
2
2.EB.10fOenite
CoSbAs
2.EB.15aAnduoite
(Ru,Os)As
 
2
2.EB.15aClinosafflorite
CoAs
 
2
2.EB.15aNisbite
NiSb
 
2
2.EB.15aOmeiite
(Os,Ru)As
 
2
2.EB.15cPaxite
CuAs
 
2
2.EB.15aRammelsbergite
NiAs
 
2
2.EB.15aSafflorite
CoAs
 
2
2.EB.15bSeinäjokite
(Fe,Ni)(Sb,As)
 
2
2.EB.20Arsenopyrite
FeAsS
2.EB.20Gudmundite
FeSbS
2.EB.20Osarsite
(Os,Ru)AsS
2.EB.20Ruarsite
(Ru,Os)AsS
2.EB.25Cobaltite
CoAsS
2.EB.25Gersdorffite
NiAsS
2.EB.25Hollingworthite
(Rh,Pt,Pd)AsS
2.EB.25Irarsite
(Ir,Ru,Rh,Pt)AsS
2.EB.25Jolliffeite
NiAsSe
2.EB.25Krutovite
NiAs
 
2
2.EB.25Maslovite
PtBiTe
2.EB.25Michenerite
PdBiTe
2.EB.25Padmaite
PdBiSe
2.EB.25Platarsite
PtAsS
2.EB.25Testibiopalladite
PdTe(Sb,Te)
2.EB.25Tolovkite
IrSbS
2.EB.25Ullmannite
NiSbS
2.EB.25Willyamite
(Co,Ni)SbS
2.EB.25Changchengite
IrBiS
2.EB.25Mayingite
IrBiTe
2.EB.25Hollingsworthite
2.EB.25Kalungaite
PdAsSe
2.EB.25Milotaite
PdSbSe
2.EB.30Urvantsevite
Pd(Bi,Pb)
 
2
2.EB.35Rheniite
ReS
 
2
Related Minerals - Hey's Index Grouping:

- +
3.9.1Pyrrhotite
Fe
 
1-x
S (x = 0 to 0.17)
3.9.3Pyrite
FeS
 
2
3.9.4Marcasite
FeS
 
2
3.9.5Greigite
Fe
2+
 
Fe
3+
2
S
 
4
3.9.6Mackinawite
(Fe,Ni)
 
9
S
 
8
3.9.7Smythite
(Fe,Ni)
 
3+x
S
 
4
(x=0-0.3)
3.9.8Achavalite
(Fe,Cu)Se
3.9.9Ferroselite
FeSe
 
2
3.9.10Frohbergite
FeTe
 
2
3.9.12Arsenopyrite
FeAsS
3.9.13Gudmundite
FeSbS

Other Names for Löllingite

Synonyms:
ArsenosideriteAsenosideriteHüttenbergiteLeucopyriteLoellingite
MohsinMohsinePharmakopyritePrismatischer ArsenikalkiesSaetersbergite
Sätersbergite
Other Languages:
German:Arseneisen
Arsenikeisen
Arsenosiderit
Asenosiderit
Axotomer Arsenikkies
Hüttenbergit
Leucopurit
Loellingit
Löllingit
Pharmakopyrit
Saetersbergit
Sätersbergit
Russian:Леллингит
Simplified Chinese:斜方砷铁矿
Spanish:Arsenosiderita
Asenosiderita
Hüttenbergita
Leucopurita
Loellingita
Löllingita
Saetersbergita
Sätersbergita
Varieties:
Cobaltian LöllingiteGeyeriteGlaucopyrite

Other Information

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 Löllingite

Reference List:

- +
Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 303-307.

American Mineralogist (1968): 53: 1856.

Zeitschrift für Kristallographie: 32: 165-187.

Nesbitt, H.W., Uhlig, I., and Szargan, R. (2002) Surface reconstruction and As-polymerization at fractured loellingite (FeAs2) surfaces. American Mineralogist: 87: 1000-1004.

Internet Links for Löllingite

Search Engines:
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  • External Links:
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  • Look for Löllingite on Wikipedia
  • Look for Löllingite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Löllingite details from Handbook of Mineralogy (PDF)
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  • Specimens:The following Löllingite specimens are currently listed for sale on minfind.com.

    Localities for Löllingite

    The 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.
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