Hawleyite
CategorySulfide mineral
FormulaCdS
ImasymbolHwl[1]
Strunz2.CB.05a
SystemCubic
ClassHextetrahedral (43m)
H-M symbol: (4 3m)
SymmetryF43m
Unit cella = 5.818 Å; Z = 4
ColorBright yellow
HabitPowdery massive
Mohs2.5–3
LusterMetallic
StreakLight yellow
Gravity4.87
DiaphaneityTranslucent to opaque
References[2][3][4]
Smiles[SH+2]12[CdH2-2][SH+2]3[CdH2-2][SH+2]([CdH-2]14)[CdH-2]1[S+2]5([CdH-2]38)[Cd-2]26[SH+2]2[CdH-2]([S+2]4)[SH+2]1[CdH2-2][SH+2]3[CdH-2]2[S+2][CdH-2]([SH+2]6[CdH-2]([SH+2])[SH+2]68)[SH+2]([CdH2-2]6)[CdH-2]35
Jmol[SH+2]12[CdH2-2][SH+2]3[CdH2-2][SH+2]([CdH-2]14)[CdH-2]1[S+2]5([CdH-2]38)[Cd-2]26[SH+2]2[CdH-2]([S+2]4)[SH+2]1[CdH2-2][SH+2]3[CdH-2]2[S+2][CdH-2]([SH+2]6[CdH-2]([SH+2])[SH+2]68)[SH+2]([CdH2-2]6)[CdH-2]35

Hawleyite is a rare sulfide mineral in the sphalerite group, dimorphous and easily confused with greenockite. Chemically, it is cadmium sulfide, and occurs as a bright yellow coating on sphalerite or siderite in vugs, deposited by meteoric water.[4]

It was discovered in 1955 in the Hector-Calumet mine, Keno-Galena Hill area, Yukon Territory and named in honour of mineralogist James Edwin Hawley (1897–1965), a professor at Queen's University in Ontario, Canada.[3][2]

See also

References

  1. ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616
  2. ^ MinDAT
  3. ^ Webmineral
  4. ^ Handbook of Mineralogy