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Hephaistosite

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Hephaistos
Formula:
TlPb2Cl5
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:
The Tl analogue of challacolloite.

Compare Unnamed (Pb-Tl chloride).

In experimental sublimation (Mutnovsky volcano) a phase likely corrensponding to hephaistosite crystallizes in temperatures below 330-340oC (Zelensky & Bortnikova, 2005).


Classification of Hephaistosite

Approved
Approval Year:
2007
3.AA.60

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

Chemical Properties of Hephaistosite

Formula:
TlPb2Cl5
Elements listed in formula:

Crystallography of Hephaistosite

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Cell Parameters:
a = 8.9477 Å, b = 7.9218 Å, c = 12.4955 Å
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 Data:
d-spacingIntensity
3.971 (83)
3.696 (100)
2.851 (38)
2.569 (42)
2.273 (22)
2.236 (25)
2.109 (45)
1.848 (41)

Type Occurrence of Hephaistosite

Relationship of Hephaistosite to other Species

3.AA.05MarshiteCuI
3.AA.05Miersite(Ag,Cu)I
3.AA.05NantokiteCuCl
3.AA.05UM1999-11:I:CuSCu(I,S)
3.AA.10IodargyriteAgI
3.AA.10Tocornalite(Ag,Hg)I
3.AA.15BromargyriteAgBr
3.AA.15ChlorargyriteAgCl
3.AA.20CarobbiiteKF
3.AA.20GriceiteLiF
3.AA.20HaliteNaCl
3.AA.20SylviteKCl
3.AA.20VilliaumiteNaF
3.AA.25SalammoniacNH4Cl
3.AA.25UM1998-03-Cl:TlTlCl
3.AA.25LafossaiteTl(Cl,Br)
3.AA.30Calomel(Hg2)2+Cl2
3.AA.30Kuzminite(Hg22+)(Br,Cl)2
3.AA.30Moschelite(Hg22+)I2
3.AA.35NeighboriteNaMgF3
3.AA.40ChlorocalciteKCaCl3
3.AA.45KolaritePbTeCl2
3.AA.50RadhakrishnaitePbTe3(Cl,S)2
3.AA.55ChallacolloiteKPb2Cl5

Other Names for Hephaistosite

Name in Other Languages:
Simplified Chinese:氯铊铅矿

Other Information

Health Risks:
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.

Zelensky, M., Bortnikova, S. (2005): Sublimate speciation at Mutnovsky volcano, Kamchatka. European Journal of Mineralogy: 17: 107-118

Internet Links for Hephaistosite

mindat.org URL:
https://www.mindat.org/min-31407.html
Please feel free to link to this page.

Localities for Hephaistosite

This 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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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 (TL)
 
  • Sicily
    • Messina Province
      • Eolie Islands (Aeolian Islands)
        • Lipari
          • 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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