1799 Kirwan Geol. Ess. 127Springs strongly impregnated with calcareous or calcareo-sulphureous matters. 
1830 Lyell Princ. Geol. I. 204Calcareo-magnesian limestone. 
1837 Dana Min. (1868) 617Calcareobarite is a white barite from Strontian containing..6·6°/ of lime. 
1845 Darwin Voy. Nat. iv. (1873) 75The grand calcareo-argil-laceous deposit. 
1846 Dana Zooph. vii. (1848) 113Astræidæ, calcareo-coralligenous. 
calcareo-
combining form 
Etymology: calcareous 
 : calcareous 
< calcareocorneous >
< calcareosulfurous >
< calcareocorneous >
< calcareosulfurous >