Rhodonite n. (Min.) Manganese spar, or silicate of manganese, a mineral occuring crystallised and in rose-red masses. It is often used as an ornamental stone.
... littered with large blocks of sandstone. It was a grim spot. A horrible, stony, treeless waste which might have been the birthplace of the earth and the scene of Creation—a tableland between great mountains, full of masses of rhodonite contorted into grotesque shapes of stone images; a place where our lightest whispers came shouting back out of the profound stillness from the huge castellated black rocks bristling on the edge of a precipice which slit the valley ... — The Hand in the Dark • Arthur J. Rees