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Steropesite

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Formula:
Tl
 
3
BiCl
 
6
System:MonoclinicColour:Pale yellow, pale ...
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 labored.
This page provides mineralogical data about Steropesite.

Classification of Steropesite

IMA status:Approved 2008
Nickel-Strunz 10th (pending) edition ID:3.CK.05

3 : HALIDES
C : Complex halides
K : Halides of Bi, etc.
Dana 8th edition ID:11.5.9.

11 : HALIDE COMPLEXES
5 : AmBX6
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Type Occurrence of Steropesite

Type Locality:La Fossa crater, Vulcano Island, Lipari, Eolie Islands (Aeolian Islands), Messina Province, Sicily, Italy
General Appearance of Type Material:Pale lemon-yellow platy crystals to 0.2 mm
Geological Setting of type material:From a medium-temperature fumarole [250 C] near a crater of an active volcano.
Associated Minerals at type locality:
LafossaiteBismuthinite

Physical Properties of Steropesite

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

Crystallography of Steropesite

Crystal System:Monoclinic
Class (H-M):m - Domatic
Space Group:Bb {B1 1b} {Cc} {C1c1}
Cell Parameters:a = 26.686Å, b = 15.127Å, c = 13.014Å
β = 108.11°
Ratio:a:b:c = 1.764 : 1 : 0.86
Unit Cell Volume:V 4,993.23 ų (Calculated from Unit Cell)
Morphology:Platy crystals with dominant {100} and small {010}, {001}, {121}, and {121}.
X-Ray Powder Diffraction:
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)

Optical Data of Steropesite

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

Chemical Properties of Steropesite

Formula:
Tl
 
3
BiCl
 
6
Essential elements:Bi, Cl, Tl
All elements listed in formula:Bi, Cl, Tl

Other Names for Steropesite

Synonyms:
IMA2008-014
Other Languages:

Other Information

Fluorescence in UV light:Not fluorescent in UV.
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 Steropesite

Reference List:

- +
Demartin, F., et al., Canadian Mineralogist 47 (2009), in press

Internet Links for Steropesite

Search Engines:
  • Look for Steropesite on Google
  • Look for Steropesite images on Google
  • External Links:
  • Look for Steropesite on Webmineral
  • Look for Steropesite on Athena Mineralogy
  • Look for Steropesite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Mineral Dealers:
  • Steropesite specimens for sale - minfind.com
  • Top quality minerals from Kristalle of California
  • Find Steropesite on www.crystalclassics.co.uk
  • The Arkenstone - Fine Minerals
  • Fine Minerals from Weinrich Minerals, Inc.
  • Search for - Steropesite - on e-Rocks Mineral Sales & Auctions
  • Wilensky Fine Minerals
  • Search for minerals at Heliodor
  • SpiriferMinerals.com - high quality low prices
  • High-end worldwide specimens & outstanding customer service
  • Search for Steropesite on Well-Arranged Molecules
  • Buy fine minerals and gemstones from Pala International
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  • Localities for Steropesite

    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.
    (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
        • Eolie Islands (Aeolian Islands)
          • Lipari
            • Vulcano Island
    IMA website - proposals approved July 2008
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