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Löllingite

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Carlés Mine, Carlés, Salas, Asturias, Spain
© JRGL

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Formula:
FeAs
 
2
System:OrthorhombicColour:Steel gray to silver ...
Lustre:MetallicHardness:5 - 5½
Member of:Löllingite Group
Name:For the type locality.


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 {P21/n 21/n 2/m}
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

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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
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:

- +
Rammelsbergite
NiAs
 
2
Safflorite
(Co,Fe,Ni)As
 
2
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
(Co,Fe,Ni)As
 
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
(Co,Fe,Ni)As
 
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
(Pt,Rh,Ru)AsS
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

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    • Localities for Löllingite

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    Locality Updated: VOEST Quarry, Steyrling, Upper Austria, AustriaFrom Uwe Kolitsch, 17th Feb 2012 13:08:36