290 CHLORITE SCHIST. 



SECOND SUBDIVISION. Granularly laminar; 

 mixed. 



i' i 



A. Scaly, o mperfectly foliated chlorite with 

 quartz sand. 



a. Large grained, with a rough granular frac- 



ture. 



b. Small grained, with a homogeneous aspect, 



and, often, scarcely fissile. 



c. The preceding varieties passing into gray- 



wacke schist and into clay slate. 



B. Scaly chlorite with large grains of quartz. 

 Analogous in structure and appearance to the var. of 

 micaceous schist E first div. second subdiv. 



C. Scaly chlorite with large imperfect crystals of 

 felspar; similar to the former in structure, and resem- 

 bling granitic gneiss. 



D. Scaly chlorite, highly compacted, with minute 

 grains of felspar interspersed; difficultly fissile. 



a. Scaly and somewhat granular. 



b. Scaly and somewhat fibrous. 



E. Scaly chlorite intermixed with hornblende, or 

 with distinct particles of hornblende imbedded, and 

 passing into hornblende schist. 



F. Scaly chlorite intermixed with actinolite : very 

 compact, difficultly fissile, and sometimes presenting 

 an imperfectly fibrous texture. 



G. Scaly chlorite with mica : passing into micace- 

 ous schist. 



