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Erniggliite

Formula:
Tl
 
2
SnAs
 
2
S
 
6
System:TrigonalHardness:2 - 3
This page provides mineralogical data about Erniggliite.

Classification of Erniggliite

IMA status:Approved
Strunz 8th edition ID:2/E.12-45
Nickel-Strunz 10th (pending) edition ID:2.GA.45

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
G : Sulfarsenites, sulfantimonites, sulfbismuthites
A : Neso-sulfarsenites, etc. without additional S
Dana 8th edition ID:3.4.18.1

3 : SULFOSALTS
4 : ø = 3
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Type Occurrence of Erniggliite

Type Locality:Lengenbach Quarry, Im Feld (Imfeld; Feld; Fäld), Binn Valley, Wallis (Valais), Switzerland
Year of Discovery:1992

Physical Properties of Erniggliite

Hardness (Mohs):2 - 3

Crystallography of Erniggliite

Crystal System:Trigonal
Cell Parameters:a = 6.68Å, c = 7.16Å
Ratio:a:c = 1 : 1.072
Unit Cell Volume:V 276.69 ų (Calculated from Unit Cell)

Chemical Properties of Erniggliite

Formula:
Tl
 
2
SnAs
 
2
S
 
6
Essential elements:As, S, Sn, Tl
All elements listed in formula:As, S, Sn, Tl

Relationship of Erniggliite to other Species

Related Minerals - Nickel-Strunz Grouping):
2.GA.05Proustite
Ag
 
3
AsS
 
3
2.Ga.05Pyrargyrite
Ag
 
3
SbS
 
3
2.GA.10Pyrostilpnite
Ag
 
3
SbS
 
3
2.GA.10Xanthoconite
Ag
 
3
AsS
 
3
2.GA.15Samsonite
Ag
 
4
MnSb
 
2
S
 
6
2.GA.20Skinnerite
Cu
 
3
SbS
 
3
2.GA.20Wittichenite
Cu
 
3
BiS
 
3
2.GA.25Lapieite
NiCuSbS
 
3
2.GA.25Mückeite
NiCu(Bi,Sb)S
 
3
2.GA.25IMA2007-003
PtCuBiS
 
3
2.GA.30Aktashite
Cu
 
6
Hg
 
3
As
 
4
S
 
12
2.GA.30Gruzdevite
Cu
 
6
Hg
 
3
Sb
 
4
S
 
12
2.GA.30Nowackiite
Cu
 
6
Zn
 
3
As
 
4
S
 
12
2.GA.35Laffittite
AgHgAsS
 
3
2.GA.40Routhierite
CuHg
 
2
TlAs
 
2
S
 
6
2.GA.40Stalderite
(Tl,Cu)(Zn,Fe,Hg)AsS
 
3
2.GA.50Bournonite
PbCuSbS
 
3
2.GA.50Seligmannite
PbCuAsS
 
3
2.GA.50Součekite
PbCuBi(S,Se)
 
3
2.GA.55Malyshevite
PdCuBiS
 
3

Other Names for Erniggliite

Synonyms:
IMA1987-025
German names:
Erniggliit
Spanish names:
Erniggliita

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 Erniggliite

Reference List:Graeser, St., Schwander, H., Wulf, R. & Edenharter, A. (1992): Erniggliite (Tl2SnAs2S6), a new mineral from Lengenbach, Binntal (Switzerland): description and crystal structure determination based on data from synchrotron radiation. Schweizerische mineralogische und petrographische Mitteilungen: 72, 293-305.

New Minerals (1997), New Minerals 1990-1994.

Internet Links for Erniggliite

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    Localities for Erniggliite

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    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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    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Switzerland
     
    • Wallis (Valais)
      • Binn Valley
        • Im Feld (Imfeld; Feld; Fäld)
    		Schw. MPM 72 (1992), 293; AM 78 (1993), 845
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