The part of the marble which protrudes into the syenite is changed into a carbonatite–pegmatite. Otherwise the marbles retain their regular banding, which even seems to be accentuated when ...

Dec 20 (Reuters) - Northern Oil and Gas (NOG.N), opens new tab has made an acquisition offer for Granite Ridge Resources (GRNT.N), opens new tab, a smaller U.S. producer with operations in basins ...