Anglesite

Big Photo

Tsumeb, Oshikoto Region, Namibia
9.13 carats
© Rarestone.com

Anglesite is named after the type locality on Anglesey, an island off the north coast of Wales.

Anglesite forms transparent colourless crystals, often with yellow, green or blue shades. Anglesite is cut into attractive faceted stones, but it is brittle and sensitive to heat.


Fine crystals are found at various places in the USA, in the Leadhills district, Scotland and the best cuttable material comes from the Touissit mine, Oujda, Morocco.

Anglesite Gemstones by Colour

This table shows the variety of hues this gemstone can be found in. Click on a photo for more information.
 
 
 

Anglesite Gemstones by Size

This table shows distribution of Anglesite gemstone sizes that are listed on this site. This can give a good indication as to the general availability of this gemstone in different sizes.
Contributed photos
Lightest:0.93 cts
Heaviest:51.33 cts
Average:9.74 cts
Total photos:10
Do you have a larger Anglesite? Why not upload a photo?
0.93ct to 5.97ct5.97ct to 11.01ct11.01ct to 16.05ct16.05ct to 21.09ct21.09ct to 26.13ct26.13ct to 31.17ct31.17ct to 36.21ct36.21ct to 41.25ct41.25ct to 46.29ct46.29ct to 51.33ct
General Information
Chemical Formula
PbSO
 
4
Michael O’Donoghue, Gems, Sixth edition (2006)
More from other references
Photos of natural/un-cut material from mindat.org
Physical Properties of Anglesite
Mohs Hardness3 to 3.5
Walter Schumann, Gemstones of the world (2001)
More from other references
Specific Gravity6.30 to 6.39
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
TenacityBrittle
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
Cleavage QualityDistinct
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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FractureConchoidal
Arthur Thomas, Gemstones (2009)
Heat SensitivitySensitive
Arthur Thomas, Gemstones (2009)
Optical Properties of Anglesite
Refractive Index1.877 to 1.894
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
Optical CharacterBiaxial/+
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
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Birefringence0.017
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
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PleochroismNil
Arthur Thomas, Gemstones (2009)
Dispersion0.044
Arthur Thomas, Gemstones (2009)
Colour
Colour (General)Colourless, yellow, greenish, brownish, white.
Walter Schumann, Gemstones of the world (2001)
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TransparencyTransparent,Translucent
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
More from other references
LustreAdamantine,Vitreous,Resinous
Michael O’Donoghue, Gems, Sixth edition (2006)
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Fluorescence & other light emissions
Fluorescence (Short Wave UV)Weak yellow
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
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Crystallography of Anglesite
Crystal SystemOrthorhombic
Herve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)
More from other references
HabitTabular
Arthur Thomas, Gemstones (2009)
Geological Environment
Where found:Occurs in the oxidized zone of lead deposits.
Arthur Thomas, Gemstones (2009)
Further Information
Mineral information:Anglesite information at mindat.org
Significant Gem Localities
Morocco
 
  • Oriental Region
    • Jerada Province
      • Touissit-Bou Beker mining district
Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 382
Namibia
 
  • Oshikoto Region
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 268, 663.
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