tranquillityiten.

/traŋˈkwɪlɪtɪʌɪt/

Etymology: < the name of the Sea of Tranquillity on the Moon, where the mineral was first collected: see -ite suffix¹.

Mineralogy.

A silicate of ferrous iron, titanium, zirconium, and yttrium, Fe₈(Zr, Y)₂Ti₃Si₃O₂₄, occurring as dark red laths with a hexagonal crystal structure and found only on the moon.

ΘΚΠ

the world > the earth > minerals > types of mineral > silicates > miscellaneous silicates > [noun] > silicates of zirconium and others > found on moon

tranquillityite1971

1970 Sci. Jrnl. May 23/3 ‘Tranquilite’ is the name Professors Paul Ramdohr and Josef Zaeringer..have given a new mineral they discovered in Moon rock samples collected by Apollo 11 astronauts.]

1971 J. F. Lovering et al. in Proc. 2nd Lunar Sci. Conf. (Geochim. et Cosmochim. Acta Suppl. II) I. 39 Tranquillityite.., a completely new silicate mineral, was first recognized in Apollo ii basalt rocks as a possible new phase ‘A’.

1981 P. H. Cadogan Moon iii. 181 Of all lunar minerals, tranquillityite is perhaps the most important carrier of the naturally radiogenic elements, uranium and thorium.

This entry has not yet been fully updated (first published 1986; most recently modified version published online June 2018).

单词	tranquillityite
释义	tranquillityiten. /traŋˈkwɪlɪtɪʌɪt/ Etymology: < the name of the Sea of Tranquillity on the Moon, where the mineral was first collected: see -ite suffix¹. Mineralogy. A silicate of ferrous iron, titanium, zirconium, and yttrium, Fe₈(Zr, Y)₂Ti₃Si₃O₂₄, occurring as dark red laths with a hexagonal crystal structure and found only on the moon. ΘΚΠ the world > the earth > minerals > types of mineral > silicates > miscellaneous silicates > [noun] > silicates of zirconium and others > found on moon tranquillityite1971 1970 Sci. Jrnl. May 23/3 ‘Tranquilite’ is the name Professors Paul Ramdohr and Josef Zaeringer..have given a new mineral they discovered in Moon rock samples collected by Apollo 11 astronauts.] 1971 J. F. Lovering et al. in Proc. 2nd Lunar Sci. Conf. (Geochim. et Cosmochim. Acta Suppl. II) I. 39 Tranquillityite.., a completely new silicate mineral, was first recognized in Apollo ii basalt rocks as a possible new phase ‘A’. 1981 P. H. Cadogan Moon iii. 181 Of all lunar minerals, tranquillityite is perhaps the most important carrier of the naturally radiogenic elements, uranium and thorium. This entry has not yet been fully updated (first published 1986; most recently modified version published online June 2018). < n.1971
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