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Thalfenisite

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Oktyabr'skoe (Oktyabr'skoye; Oktyabr'sky) Cu-Ni deposit, Noril'sk, Putoran Plateau, Taimyr Peninsula, Taymyrskiy Autonomous Okrug, Eastern-Siberian Region, Russia
© 2008, JGW




Formula:
Tl
 
6
(Fe,Ni,Cu)
 
25
S
 
26
Cl
Colour:BrownHardness:1 - 1½
Member of:Djerfisherite Group
Name:The name reflects its composition: thallium, iron (latin "ferrum"), nickel and sulfur.


Djerfisherite Group

Classification of Thalfenisite

IMA status:Approved 1979
Strunz 8th edition ID:2/F.06-20
Nickel-Strunz 10th (pending) edition ID:2.FC.05

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
F : Sulfides of arsenic, alkalies; sulfides with halide, oxide, hydroxide, H2O
C : With Cl, Br, I (halide-sulfides)
Dana 8th edition ID:2.15.2.2

2 : SULFIDES
15 : Chlor-sulfides
Hey's CIM Ref.:6.5.12

6 : Sulphosalts - Sulphostannates, Sulphogermanates,Sulpharsenates, Sulphantimonates, Sulphovanadates and Sulphohalides
5 : Sulphohalides
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Type Occurrence of Thalfenisite

Type Locality:Oktyabr'skoe (Oktyabr'skoye; Oktyabr'sky) Cu-Ni deposit, Noril'sk, Putoran Plateau, Taimyr Peninsula, Taymyrskiy Autonomous Okrug, Eastern-Siberian Region, Russia
Year of Discovery:1979

Physical Properties of Thalfenisite

Lustre:Metallic
Diaphaneity (Transparency):Opaque
Colour:Brown
Hardness (Mohs):1 - 1½

Chemical Properties of Thalfenisite

Formula:
Tl
 
6
(Fe,Ni,Cu)
 
25
S
 
26
Cl
Essential elements:Cl, Fe, S, Tl
All elements listed in formula:Cl, Cu, Fe, Ni, S, Tl
Common Impurities:K

Relationship of Thalfenisite to other Species

Member of:Djerfisherite Group
Other Members of Group:

- +
Cu-djerfisherite
K
 
6
(Cu,Fe)
 
25
S
 
26
Cl
Djerfisherite
K
 
6
(Fe,Cu,Ni)
 
25
S
 
26
Cl
Owensite
(Ba,Pb)
 
6
(Cu,Fe,Ni)
 
25
S
 
27
Related Minerals - Nickel-Strunz Grouping):

- +
2.FC.05Djerfisherite
K
 
6
(Fe,Cu,Ni)
 
25
S
 
26
Cl
2.FC.05Owensite
(Ba,Pb)
 
6
(Cu,Fe,Ni)
 
25
S
 
27
2.FC.10Bartonite
K
 
6
Fe
 
20
S
 
26
S
2.FC.10Chlorbartonite
K
 
6
Fe
 
24
S
 
26
(Cl,S)
2.FC.15aArzakite
Hg
2+
3
S
 
2
(Br,Cl)
 
2
2.FC.15aCorderoite
Hg
2+
3
S
 
2
Cl
 
2
2.FC.15cGrechishchevite
Hg
2+
3
S
 
2
(Br,Cl,I)
 
2
2.FC.15aLavrentievite
Hg
2+
3
S
 
2
(Cl,Br)
 
2
2.FC.15dRadtkeite
Hg
2+
3
S
 
2
ICl
2.FC.15bKenhsuite
Hg
2+
3
S
 
2
Cl
 
2
2.FC.20aCapgaronnite
HgAgS(Cl,Br,I)
2.FC.20cPerroudite
Hg
 
5
Ag
 
4
S
 
5
(I,Br)
 
2
Cl
 
2
2.FC.20bIltisite
HgAgS(Cl,Br)
2.FC.25Demicheleite-(Br)
BiSBr
2.FC.25Demicheleite-(Cl)
BiSCl
Related Minerals - Hey's Index Grouping:

- +
6.5.1Corderoite
Hg
2+
3
S
 
2
Cl
 
2
6.5.2Arzakite
Hg
2+
3
S
 
2
(Br,Cl)
 
2
6.5.3Lavrentievite
Hg
2+
3
S
 
2
(Cl,Br)
 
2
6.5.4Grechishchevite
Hg
2+
3
S
 
2
(Br,Cl,I)
 
2
6.5.5Radtkeite
Hg
2+
3
S
 
2
ICl
6.5.6Capgaronnite
HgAgS(Cl,Br,I)
6.5.7Perroudite
Hg
 
5
Ag
 
4
S
 
5
(I,Br)
 
2
Cl
 
2
6.5.8Ardaite
Pb
 
19
Sb
 
13
S
 
35
Cl
 
7
6.5.9Dadsonite
Pb
 
23
Sb
 
25
S
 
60
Cl
6.5.10Radhakrishnaite
PbTe
 
3
(Cl,S)
 
2
6.5.11Djerfisherite
K
 
6
(Fe,Cu,Ni)
 
25
S
 
26
Cl

Other Names for Thalfenisite

Synonyms:
IMA1979-018
Other Languages:
German:Thalfenisit
Simplified Chinese:硫镍铁铊矿
Spanish:Thalfenisita

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 Thalfenisite

Reference List:

- +
Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva (1979): 108: 696-701.

American Mineralogist (1981): 66: 219.

Internet Links for Thalfenisite

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    • Localities for Thalfenisite

    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.
    Russia
     
    • Eastern-Siberian Region
      • Taymyrskiy Autonomous Okrug
        • Taimyr Peninsula
          • Putoran Plateau
            • Noril'sk
    		ZVMO,(1979) 108, 696-701; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
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