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Hephaistosite

Formula:
TlPb
 
2
Cl
 
5
System:Monoclinic
Name:
From Greek mythology for Hephaistos, the god of fire, equating to the Roman god of fire Vulcano, name of the type locality.
Isostructural with:Challacolloite


The Tl analogue of challacolloite.

Classification of Hephaistosite

IMA status:Approved 2007
Nickel-Strunz 10th (pending) edition ID:3.AA.60

3 : HALIDES
A : Simple halides, without H2O
A : M:X = 1:1, 2:3, 3:5, etc.
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Type Occurrence of Hephaistosite

Type Locality:La Fossa Crater, Vulcano Island, Eolie Islands (Aeolian Islands), Lipari, Messina Province, Sicily, Italy

Crystallography of Hephaistosite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:P21/b {P1 1 21/b} {P21/c} {P1 21/c 1} {P21/a}
Cell Parameters:a = 8.9477Å, b = 7.9218Å, c = 12.4955Å
β = 90.092°
Ratio:a:b:c = 1.13 : 1 : 1.577
Unit Cell Volume:V 885.70 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
d-spacingIntensity
3.971 (83)
3.696 (100)
2.851 (38)
2.569 (42)
2.273 (22)
2.236 (25)
2.109 (45)

Chemical Properties of Hephaistosite

Formula:
TlPb
 
2
Cl
 
5
Essential elements:Cl, Pb, Tl
All elements listed in formula:Cl, Pb, Tl

Relationship of Hephaistosite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
3.AA.05Marshite
CuI
3.AA.05Miersite
(Ag,Cu)I
3.AA.05Nantokite
CuCl
3.AA.05UM1999-11:I:CuS
Cu(I,S)
3.AA.10Iodargyrite
AgI
3.AA.10Tocornalite
(Ag,Hg)I
3.AA.15Bromargyrite
AgBr
3.AA.15Chlorargyrite
AgCl
3.AA.20Carobbiite
KF
3.AA.20Griceite
LiF
3.AA.20Halite
NaCl
3.AA.20Sylvite
KCl
3.AA.20Villiaumite
NaF
3.AA.25Salammoniac
NH
 
4
Cl
3.AA.25UM1998-03-Cl:Tl
TlCl
3.AA.25Lafossaite
Tl(Cl,Br)
3.AA.30Calomel
Hg
 
2
Cl
 
2
3.AA.30Kuzminite
Hg
 
2
(Br,Cl)
 
2
3.AA.30Moschelite
Hg
 
2
I
 
2
3.AA.35Neighborite
NaMgF
 
3
3.AA.40Chlorocalcite
KCaCl
 
3
3.AA.45Kolarite
PbTeCl
 
2
3.AA.50Radhakrishnaite
PbTe
 
3
(Cl,S)
 
2
3.AA.55Challacolloite
KPb
 
2
Cl
 
5

Other Names for Hephaistosite

Synonyms:
IMA2006-043
Other Languages:

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 Hephaistosite

Reference List:Campostrini, I., Demartin, F., Gramaccioli, C.M., Orlandi, P. (2008): Hephaistosite, TlPb2Cl5, a new thallium mineral from La Fossa crater, Vulcano, Aeolian Islands, Italy. Canadian Mineralogist, 46, 701-708.

Mitolo D., Pinto D., Garavelli A., Bindi L. & Vurro F. (2009): The role of the minor substitutions in the crystal structure of natural challacolloite, KPb2Cl5, and hephaistosite, TlPb2Cl5, from Vulcano (Aeolian Archipelago, Italy). Mineralogy and Petrology 96, 121-128.

Internet Links for Hephaistosite

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    Localities for Hephaistosite

    (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.
    Italy
     
    • Sicily
      • Messina Province
        • Lipari
          • Eolie Islands (Aeolian Islands)
            • Vulcano Island
    		Campostrini I., Demartin F., Gramaccioli C.M. (2008): Hephaistosite, TlPb2Cl5 a new mineral species from La Fossa crater, Vulcano, Aeolian Islands, Italy. - Canadian Mineralogist 46, 701-708; Mitolo D., Pinto D., Garavelli A., Bindi L. & Vurro F. (2009): The role of the minor substitutions in the crystal structure of natural challacolloite, KPb2Cl5, and hephaistosite, TlPb2Cl5, from Vulcano (Aeolian Archipelago, Italy). Mineralogy and Petrology 96, 121-128.
    Mineral and/or Locality
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