Minerals and Rocks 2016 - Rhyolite & Sea salt

Minerali i stijene 2016 - riolit i morska sol

Rhyolite is a sour effusive rock of grey to green colour built mostly from the minerals quartz, feldspar, mica and amphibole. It is of porphyric structure with holo crystal granular base.
One of especially interesting and also edible minerals is halite, (NaCl) from the class of halogenides, better known under the name rock salt.

Riolit je kisela efuzivna (izljevna) stijena sive do zelene boje građena pretežito od minerala kremena (kvarca), feldspata, tinjaca i amfibola. Porfirne je strukture s holokristalnom zrnatom osnovom.
Jedan od posebice zanimljivih, a usto i jestivih minerala, jest halit (NaCl) iz razreda halogenida, poznatiji pod nazivom kamena sol.