Var. c. Ribaned gneiss. Subgroup I. Oblique gneiss. Var. a. Curled gneiss. c. Conglomeritic gneiss. J. Porphyritic gneiss. Var. h. Epidotic. k. Calcareous. n. Pyrrhotitic. r. Ribaned. s. Fibrous. t. Nummoid. u. Wavy. v. Frilled. w. Curled. Subgroup E. Basic schist. Var. a. Hornblende schist. b. Actinolite. c. Chlorite. d. Chloritoid. e. Potstone. f. Talc schist. h. Tourmaline. i. Rhætizitic. F. Metallic schists. Var. a. Mico-iron schist. c. Pyrrhotite schist. G. Burnt shale. Var. a. Burnt clay. b. Rock slag. c. Porcelanyte. H. Minerals forming rock masses (see page 22). Var. a. Quartz. b. Corundum. c. Apatite. d. Magnesite. Var. e. Orthoclase. n. Garnet-rock. Group N.-SLATE. [See Order II., Class I., Group A, Subgroup B, Variety d.] Group O.-CALCAREOUS ROCKS. Subgroup 4. Schistose limestone. Var. a. Cipollino. b. Calciphyre. c. Hemitrene. f. Granular schistose limestone. Group P.-PSEUDOMORPH CALCAREOUS ROCKS. Subgroup A. Schistose dolomyte. Var. a. Micaceous dolomyte. B. Ophyte. b. Pyritous. c. Saccharoid. Var. a. Ophidolomyte. C. Steatyte. Var. a. Felsitic steatyte. b. Hornblendic. c. Pyroxenic. d. Micaceous. f. Pyrallolyte. D. Magnesyte. E. Smaragdite schist. |