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Steropesite

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About SteropesiteHide

Cyclops
Formula:
Tl3BiCl6
Colour:
Pale yellow, pale lemon-yellow
Lustre:
Adamantine, Sub-Adamantine, Vitreous
Specific Gravity:
5.737 (Calculated)
Crystal System:
Monoclinic
Name:
Named in 2009 by Francesco DeMartin, Carlo Maria Gramaccioli, and Italo Campostrini after Steropes (Στεροπης), the son of Uranus in allusion to the mineral's occurrence on the Island of Vulcano where the mythical Steropes ("lightning") labored. These mythological half-gods were helpers of Hephaistos (Hephaestus), the ancient Greek god of fire, whose workshops were alleged to be located at Vulcano.
This page provides mineralogical data about Steropesite.


Classification of SteropesiteHide

Approved
Approval Year:
2008
3.CK.05

3 : HALIDES
C : Complex halides
K : Halides of Bi, etc.
11.5.9.

11 : HALIDE COMPLEXES
5 : AmBX6

Physical Properties of SteropesiteHide

Adamantine, Sub-Adamantine, Vitreous
Transparency:
Transparent
Colour:
Pale yellow, pale lemon-yellow
Streak:
White
Tenacity:
Brittle
Cleavage:
None Observed
Density:
5.737 g/cm3 (Calculated)

Optical Data of SteropesiteHide

Type:
Biaxial
Pleochroism:
Non-pleochroic
Comments:
Calculated RI = 1.922

Chemical Properties of SteropesiteHide

Formula:
Tl3BiCl6

Crystallography of SteropesiteHide

Crystal System:
Monoclinic
Class (H-M):
m - Domatic
Space Group:
Bb
Setting:
Cc
Cell Parameters:
a = 26.686 Å, b = 15.127 Å, c = 13.014 Å
β = 108.11°
Ratio:
a:b:c = 1.764 : 1 : 0.86
Unit Cell V:
4,993.23 ų (Calculated from Unit Cell)
Z:
16
Morphology:
Platy crystals with dominant {100} and small {010}, {001}, {121}, and {121}.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.241 (29)
3.884 (30)
3.846 (40)
3.773 (100)
2.801 (27)
2.745 (30)
2.710 (35)
2.113 (93)

Type Occurrence of SteropesiteHide

General Appearance of Type Material:
Pale lemon-yellow platy (stout and tabular) crystals to 0.2 mm
Place of Conservation of Type Material:
The holotype is deposited (no. 2008–02) in the Reference Collection of Dipartimento di Chimica Strutturale e Stereochimica Inorganica of Università degli Studi di Milano.
Geological Setting of Type Material:
From a high-temperature fumarole [450 C] near a crater of an active volcano.
Associated Minerals at Type Locality:

Synonyms of SteropesiteHide

Fluorescence of SteropesiteHide

Not fluorescent in UV.

Other InformationHide

Notes:
The mineral is not hygroscopic and seems stable in the open air.
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 SteropesiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Demartin F, Gramaccioli C M, Campostrini I (2009) Steropesite, Tl3BiCl6, a new thallium bismuth chloride from La Fossa crater, Vulcano, Aeolian Islands, Italy. The Canadian Mineralogist 47, 373-380

Internet Links for SteropesiteHide

Localities for SteropesiteHide

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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Italy (TL)
 
  • Sicily
    • Messina Province
      • Eolie Islands (Aeolian Islands)
        • Lipari
          • Vulcano Island
Demartin F, Gramaccioli C M, Campostrini I (2009) Steropesite, Tl3BiCl6, a new thallium bismuth chloride from La Fossa crater, Vulcano, Aeolian Islands, Italy. The Canadian Mineralogist 47, 373-380
Mineral and/or Locality  
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