calc- Min. and Geol.
(kælk)
[a. Ger. kalk lime, MHG. kalc, OHG. chalch (= OE. cealc chalk), WGer. a. L. calc-em (calx) lime. In adopting the German term, English mineralogists have spelt it like Latin, and extended its use.]
Lime: used attrib. or in comb. = ‘lime-, calcareous’, as in calc-sinter, -spar, -tuff; also calcaphanite, a calcareous variety of aphanite; calc-schist, calcareous schist, limestone shale.
| 1875 Dawson Dawn of Life iii. 53 Dark grey micaceous limestone or calc-schist. 1879 Rutley Stud. Rocks xiii. 247 The calc-aphanite schist has a schistose structure. |