Question

If groundmass in a porphyritic texture is glassy is known as

Answer 1

Answer:

Porphyritic - This texture describes a rock that has well-formed crystals visible to the naked eye, called phenocrysts, set in a very fine grained or glassy matrix, called the groundmass.

Answer 2

Groundmass in a porphyritic texture is glassy is known as Hyalophitic

Explanation:

• Porphyritic texture- When an igneous rock contains large crystals of some mineral set in a matrix which is much finer grained or even glassy, the texture is known as porphyritic.

• The large crystals are called phenocrysts and the fine -grained material is called groundmass.

• When in a porphyritic texture, the groundmass is of glass then it is known as hyalopilitic texture.

• Generally in this texture, feldspar laths are found intermixed with glass.