- tinguaite
- 霓霞脉岩
English-Chinese geology dictionary (英汉地质大词典). 2013.
tinguaite
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tinguaite — /tingˈgwə īt/ noun A fine grained igneous rock composed essentially of feldspar, nepheline and aegirine ORIGIN: Tingua Mountains in Brazil … Useful english dictionary
tinguaite — ▪ rock pale to dark green, very fine grained igneous rock that may be considered the dike (tabular body injected in fissures) equivalent of phonolite. It contains alkali feldspar and nepheline, with aegirine or aegirine augite. Tinguaite in … Universalium
Leucite — is a rock forming mineral composed of potassium and aluminium tectosilicate K [AlSi2O6] . Crystals have the form of cubic icositetrahedra but, as first observed by Sir David Brewster in 1821, they are not optically isotropic, and are therefore… … Wikipedia
Nepheline — General Category Silicate mineral Chemical formula (Na,K)AlSiO4 … Wikipedia
phonolite — phonolitic /fohn l it ik/, adj. /fohn l uyt /, n. a fine grained volcanic rock composed chiefly of alkali feldspar and nepheline, some varieties of which split into pieces that ring on being struck. [1820 30; < F < G Phonolith. See PHONO , LITE]… … Universalium
