1 86 EARTHS. AGGREGATE. 6i. Porphyrius. 



durum. Compofed of mica, garnets, and quartz, 

 Fichtel Karpath. p, 246. 287. 

 Found in the Carpathic mountains. 



quar'tsosum, Compofed of garnet?, and quartz. 

 Fichtel Karpath. />. 246. 287, <[? 

 Found in the Carpathic mountains. 



mkanst Compofed of fhining marble, and mica. 



1. Golden mica fcattered among the marble. 

 Avanturino. Broch. muier.Jicil, 



2. Green irtica difpofed in llrata. ^ 

 Marmo Cipolino. Freber, Br. a WelfchUp. 251. 



Found detached in 5/V/7>', in a cave on mount Caputo^ thefecond 

 variety in Greece : probably not of this genus. 



61. ;PORPH YRIUS. Confifting of diftlnft cryftals 

 of anociier genus imbedded in a compaft hard- 

 ened pafte: maflivej varying extremely in age, 

 duration, hardnefs, and colour. 



A. Talcofe. 



talcoiut, Confifting of talc, and cryftals of quartz imbedded. 

 Storr Alpenr. 2, p. 280. 

 Found in the valley Tellina near Cla'vennam, of a filvery colour, 



ponderosus* Confifting of talc, and common barytes. 

 Storr Alpenr, 2. /. 266. 

 Found in the valley Tellina near Cajiiony of a dull greenifh colour. 



rhaticus* Confifting of talc, barytes, and fpar. 

 Storr Alpenr. 2. p. 209. 



Found on mount Defpin in the country of the Grifons, of a fea- 

 green or white colour. 



B. With a ferpentinc haje. 



arenarius. Compofed of ferpentine, and lefler cryftals of quartz im-^ 

 bedded. 



Saxum ferpentinum. Herrm^ UraLErs:, 2. /. 321. 



Freber. Br. a. Welfchland. 23. />, 363. 



Found in the eaftern part of the IJral mountains of Siberia, the 

 interior mountains of Auflria^ and other parts of the conti- 

 nent : hard, forming rocks and the greater parts of mountains, 

 and is fometimcs enriched with fmall particles of mica. 



