redingtoniten.
/ˈrɛdɪŋtənʌɪt/, U.S. /ˈrɛdɪŋtnˌaɪt/ Mineralogy.
An iron-containing mineral belonging to the halotrichite group, typically occurring as fibrous masses of a white, yellowish, or purple colour.Redingtonite is a hydrated sulphate of iron, magnesium, nickel, chromium, and aluminium. Crystal system: monoclinic.
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the world > the earth > minerals > types of mineral > sulphates > [noun] > sulphates of two plus elements > hydrous or hydrated
polyhalite1818
neoplase1854
römerite1858
kainite1868
mamanite1868
plagiocitrite1886
redingtonite1888
knoxvillite1889
kleinite1907
mosesite1910
ransomite1928
leightonite1938
koktaite1948
1888 G. F. Becker in Monogr. U.S. Geol. Surv. No. 13. 279 A hydrous chromium sulphate occurs in fissures in silicified serpentine... It seems appropriate to give the name redingtonite to this hitherto unknown mineral.
1965 G. J. Williams Econ. Geol. N.Z. x. 149/1 He found deep lilac or purple earthy redingtonite associated with the folia of the fuchsite.
2005 W. E. Motzer in J. Guertin et al. Chromium(VI) Handbk. ii. 77 That hydrothermal alteration has transformed Cr oxide minerals is evidenced by the presence of redingtonite.
This entry has been updated (OED Third Edition, September 2009; most recently modified version published online March 2022).
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n.1888