Notices of the Geology and Mineralogy of Sicily. 207 
coast near Messina, there is aconstant process of aggrega- 
tion going forward. The soil is calcareous and the mud 
of the shore hardens, with the sand, pebbles, &c. into a 
breccia. By drawing the outlines of any object, it may in 
no great time, be obtained in a solid state. In this way they 
form millstones &c. : 
The Metallic Minerals of Sicily lie almost entirely among 
the argillites, whence they extend in winding veins into 
the mica slate and gneiss. The following are enumerated 
by Prof. Ferrara. 1. Silver : Native Silver in the mines of 
Fiume di Nisi and Limaria; 2. Vitreous Silver. Fiu- 
me di Nisi and Noora, with galena and earthy iron; 3. 
Arseniated Silver in the mines near Bronte on quartz, and 
in minute superficial grains on green Carb. Copper; 4. 
Arseniated sulphuret, laminated on quartz and calc. spar, 
at Limaria; 5. Antimoniated Sulphuret, near Francoril- 
la ; 6. Red, brown, or lead-grey, composed of Silver, cop- 
per, sulphur and antimony, at Francorilla, 
Copper: 1. Native Copper, on barytes and quartz, at F’. di 
Nisi; 2. grey granulated C. on quartz, at Noora; 3. Vitre- 
ous C. iridescent, at Noora; 4. Violet blue C. on quartz and 
in bituminous slate, at Ali; 5. Steel grey, powder black, 
common at Noora, composed of copper, silver, antimony, 
sulphur, &c. ; 6. Red oxide, at F. di Nisi; 7. Blue carb. 
superficial or in earthy grains, also penetrating various 
stones, argillaceous and calcareous, and giving them the 
appearance of Lazulite, common at F. di Nisi; 8. Green 
carb. superficial on quartz, fibrous, with silver and lead at 
Noora; 9. Green C. in stalactitic grains on barytes and 
earthy iron, at F’. di Nisi; 10. Green C. granular with blue 
C. and silver on quartz at F. di Nisi; 11. Earthy green C. 
among the ores at F. di Nisi and in Argillite; 12. Yellow 
C. Pyrites, abundant at Taomina, Noora, Nc., and in the 
streams descending from the mountains. - 
Lead: Galena, at Noora and Limina, laminated, 
in cubic crystals and granular; mixed with fragments 
of quartz and copper pyrites, at Limina on barytes: an 
argentiferous ore Is extensively wrought at Noora. 
Antimony : Arseniated Sulphuret, forms mines in the 
vicinity of Savoca and Roccalumiera, formerly wrought. 
Molybdena, mixed with the quartz matrix of the green 
copper at F. di Nisi, and the galena at Noora ; also in the 
rolled quartz pebbles in the valleys of Pelorus. 
