| 释义 |
tundrite Min.|ˈtʌndraɪt|
[ad. Russ. tundrít (E. I. Semenov Mineralogiya Redkikh Zemel´ (1963) 209), f. Russ. túndra tundra (from its being first found on the Lovozero tundra near Murmansk): see -ite1.]
A silicate and carbonate (essentially) of cerium (normal tundrite, tundrite-(Ce)) or neodymium (tundrite-(Nd)), sodium, and titanium found as triclinic brownish- or greenish-yellow crystals.
1965Amer. Mineralogist L. 2098 Tundrite occurs in 3 nepheline syenite pegmatites of Mt. Nepkha, Lovozero tundra, Kola Peninsula. 1974Ibid. LIX. 633/2 Infra-red study of tundrite from a new locality in the Khibina massif showed bands of carbonate; this was confirmed by spectra of the Greenland mineral. |