Dictionary search results

Showing 1-6 of 6 results

feldspar British & World English

An abundant rock-forming mineral typically occurring as colourless or pale-coloured crystals and consisting of aluminosilicates of potassium, sodium, and calcium

alkali feldspar British & World English

Any of the group of feldspars rich in sodium and/or potassium

plagioclase British & World English

A form of feldspar consisting of aluminosilicates of sodium and/or calcium, common in igneous rocks and typically white

plagioclase feldspar in plagioclase British & World English

A form of feldspar consisting of aluminosilicates of sodium and/or calcium, common in igneous rocks and typically white