Question

What is the differance between magmatic and hydrothermal amagmatic?

Answer 1

Answer:

Explanation:

what the difference between magmatic albite and hydrothermal one in highly fractionated granitic rocks. In my case all plagioclase crystals contain An from 0 to 4 which mean that they are pure albite. In fact there is no evidence for hydrothermal or alteration except for very few crystals that their cores are partly transformed into sericite and/or secondary muscovite.