feldspathoid मीनिंग इन हिंदी

उदाहरण वाक्य

1. Except these last, practically all rocks contain felspars or feldspathoid minerals.
2. A normative feldspathoid classifies a rock as silica-undersaturated; an example is nephelinite.
3. Silica-undersaturated mafic igneous rocks contain magnesian olivine but not magnesian orthopyroxene, and / or a feldspathoid.
4. Secondly, the degree of silica saturation of the melt that formed the rock can be assessed in the absence of diagnostic feldspathoid species.
5. Microscopic sections of some of these rocks are of great interest on account of their beauty and the variety of feldspathoid minerals which they contain.
6. Occasionally minerals of the feldspathoid group, such as nepheline, sodalite and leucite, occur, and rocks of this kind are known as phonolitic trachytes.
7. Sodalite, colorless and transparent in thin section, but frequently pale blue in the hand specimens, is the principal feldspathoid mineral in addition to nepheline.
8. They then performed a complete chemical and structural analysis which confirmed that the substance indeed was a new feldspathoid species related to the cancrinite-sodalite group.
9. "' Foid "', contraction of the term feldspathoid, is applied to any igneous rock containing up to 60 % modal feldspathoid minerals.
10. "' Foid "', contraction of the term feldspathoid, is applied to any igneous rock containing up to 60 % modal feldspathoid minerals.