feldspar

• Nom désignant tout minéral cristallin dur du groupe des silicates contenant de l'aluminium et un cation tel que le potassium, le sodium, le calcium ou le baryum.

A noun referring to any of a group of hard crystalline minerals composed of aluminum silicates of potassium, sodium, calcium, or barium.

1. Mineral groupC1formalscientific

   A group of hard crystalline minerals composed primarily of aluminum silicates combined with potassium, sodium, calcium, or barium; they are the most abundant minerals in Earth's crust.

   Feldspath (groupe minéral)

   • Feldspar is a major component of granite and many other igneous rocks.
   • Geologists often identify feldspar by its characteristic cleavage.
   • The feldspar crystals in this sample have a pinkish color due to potassium content.

   Synonymesfelspar