zaratite


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zaratite

(ˈzærəˌtaɪt)
n
(Minerals) a green amorphous mineral consisting of hydrated nickel carbonate. Formula: Ni3(CO3)(OH)4.4H2O
[C19: from Spanish zaratita, named after G. Zárate, 19th-century Spaniard]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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References in periodicals archive ?
In the past, collectors concentrated mainly on three minerals: what they labeled green zaratite, blue hellyerite, and the massive sulfide heazlewoodite.
Collectors should note that because of the variety of green nickel minerals now known to occur at the Lord Brassey mine, the mineral name "Zaratite," which formerly applied to all of the green crusts, smears and globule minerals found in this mine, can no longer be used with any certainty.
This is doubtful, considering that no other As-bearing minerals have been identified; it may be a misidentification of zaratite.
Henry and Birch (1992) analyzed some zaratite from the Lord Brassey mine by XRD and noted the presence of otwayite inclusions, apparently formed as a result of breakdown and recrystallization of the amorphous zaratite matrix.
One example was a specimen of magnesio-chromite and zaratite, which was labeled "Butte." If it is from Montana at all, it is from the Stillwater Complex near Livingston.
A vitreous emerald-green mineral, similar to descriptions of the discredited mineral zaratite, occurs as a late-stage coating on some specimens.