minerals Article On the Chemical Composition and Possible Origin of Na–Cr-Rich Clinopyroxene in Silicocarbonatites from Samalpatti, Tamil Nadu, South India Ondrˇej Krátký 1,2,3,*, Vladislav Rapprich 1, Martin Racek 2, Jitka Míková 1 and Tomáš Magna 1 1 Czech Geological Survey, ...