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Hawleyite



Hawleyite

Orange-yellow earthy coating
General
CategoryMineral
Chemical formulaCdS
Identification
ColorBright yellow
Crystal habitPowdery massive
Crystal systemCubic-hextetrahedral
Mohs Scale hardness2.5-3
LusterMetallic
StreakLight yellow
Specific gravity4.87

Hawleyite is a rare sulfide mineral in the sphalerite group, dimorphous and easily confused with greenockite. Chemically, it is a cadmium sulfide, and occurs as a bright yellow coating on sphalerite or siderite in vugs, deposited by meteoric waters. It was discovered in 1955 and named in honour of mineralogist James Edwin Hawley, a professor at Queen's University in Ontario, Canada.

See also

References

  • MinDAT
  • Webmineral
  • Handbook of Mineralogy (PDF)
 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Hawleyite". A list of authors is available in Wikipedia.
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