Rocks are not all equal. Before you call me a rock racist, what I mean is that they are very different in terms of chemistry and this causes them to behave very differently when they are altered by hydrothermal fluids. In the case that I am going to show, this means that some rocks are basically indifferent to chemical alterations, while in others the interaction with fluids produces beautiful crystals.
If you remember my previous post, you will remember that I have left you with one question: what are the ‘dark balls’ in the granite?… Read More »What are the ‘dark balls’ in the granite of Sant’Andrea (Elba)?
I was a student the first time I visited the outcrops of Sant’Andrea in the far 2011. We must have looked really weird: a class… Read More »What are the white ‘stones’ nestled in the rocks of Sant’Andrea (Elba)?
The glacier of Neves, located on the Italian side of the Eastern Alps at the border with Austria, close to the Neves Lake (Neves-Stausee), is… Read More »When two different magmas meet (Neves, Sud Tirol)