Creedite

Big Photo

China
0.36 carats
© Rarestone.com

Creedite is named after its discovery locality, in Wagon Wheel Gap, Creede quadrangle, Mineral County, Colorado, USA.

Creedite is a rare mineral, it has unique crystal form and attractive range of colours. Transparent crystals are rarely large enough to facet. Some light purple transparent stones have been cut.

Creedite Gemstones by Colour

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

Creedite Gemstones by Size

This table shows distribution of Creedite 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:0.15 cts
Heaviest:0.50 cts
Average:0.34 cts
Total photos:3
Do you have a larger Creedite? Why not upload a photo?
0.15ct to 0.19ct0.19ct to 0.22ct0.22ct to 0.26ct0.26ct to 0.29ct0.29ct to 0.33ct0.33ct to 0.36ct0.36ct to 0.40ct0.40ct to 0.43ct0.43ct to 0.47ct0.47ct to 0.50ct
General Information
Chemical Formula
Ca
 
3
Al
 
2
(SO
 
4
)(F,OH)
 
10
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Photos of natural/un-cut material from mindat.org
Physical Properties of Creedite
Mohs Hardness4.5
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Specific Gravity2.70
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Cleavage QualityPerfect
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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FractureUneven,Conchoidal
Arthur Thomas, Gemstones (2009)
Optical Properties of Creedite
Refractive Index1.461 to 1.485
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Optical CharacterBiaxial/-
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Birefringence0.021 to 0.024
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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DispersionStrong
Arthur Thomas, Gemstones (2009)
Colour
Colour (General)White, colourless, rose-violet
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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TransparencyTransparent,Translucent,Opaque
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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LustreVitreous
Arthur Thomas, Gemstones (2009)
Crystallography of Creedite
Crystal SystemMonoclinic
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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HabitPrismatic or radiating masses
Michael O’Donoghue, Gems, Sixth Edition (2006)
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Geological Environment
Where found:Occurs in fluorite-rich hydrothermal mineral deposits.
Michael O’Donoghue, Gems, Sixth Edition (2006)
Further Information
Mineral information:Creedite information at mindat.org
Significant Gem Localities
Mexico
 
  • Chihuahua
    • Aquiles Serdán Municipality
Gems, Sixth Edition, Michael O’Donoghue, 2006, p. 402
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