1^4 EARTHS, AGGREGATE. 60. GneifTum. 



Bornii. Confiftlng of quartz, mica, and alumina. 



GneiiTuin. Born, ind.fofi. i. p. 1534 z. p. 147, 

 2. Saxum coticulare. S^it. nat. xii. 3. p» 74. ». 12.' 

 Argillaceous fhiftus. SchmeiJ/er miveral, i. />. 312. 

 Argillaceous fhiftus. Thomfoti chem. 4. />. 132, 

 Found in the metallic mountains of Hungary^ Bohemiuy Saxony, 

 and S-ived^n: the variety 2) is often ufed as a whetftone to 

 fharpen ic)'thes and large inllruments, 



Jemucim. Confifting of quartz, mica, and fteatite. 



Edelf. no'v.Ad. Stotkh, 1784. p. 93. 



Found in the higher mountains of Jemtia, and differs a little 



fiom others of its genus in gradually mouldering away when 



expofed to the atmofphere. 



spaioium, Confifting of quartz, fhorl, and feldfpar. 



A7ion. chem^ annul, 17^5. 2, ps 23. 

 Found near Halbendorf in Saxony» 



topasinum. Confifting of quartz, (horl, and topaz. 

 Topas felf Werner Claffif. p. I 5. feB, I 8. 

 Found at Schneekenfl.ein near Auerhack in Voigtland, 



comeum, Confifting of quartz, and hornbjend. 



Talcum lamellare. Sifst. nat, xii. 3. P-^^. ». 8, 

 Corneus rigidus. Wall, /vjl- I. p. 358. n. 2. 

 Hornblend Ihiftus. Schmeiffer mineral^ I. p, 311, 

 Schiftofe hornblend. Kirivan mineral. \. p. zzz. 

 Hornblende Hate. "J amei/on mineral, i./. 363. 

 Found at Fortfoy in Scotland; Saxony, Norivaj, and Saueden: 

 colour between greenifh ana raven black, and gives a green- 

 ifh-grey ftreak : texture radiate, and breaking into indeter- 

 minate fragments; is hardifti, and frequently found mixed 

 with fmall particles of mica or garnets. 



argillosums Confifting of quartz, and alumina. 

 l'". Fichtel Karpath, p. ZJ^' 

 Found in the Carpathic mountains. 



cotianum. Confifting of alumina, and mica. 



Saxum ichiftofum. 5y/. w/a/. xii. 3. ^. 79. ». 34. 

 Saxum, fchiilo, &c. Wall./yst. i. />. 417, «. il. 

 Found in Norijuay and Smceden, -hardifh, melting in the fire, 

 and is ufed by the inhabitants to polilh fteel inllruments: 

 probably not of this genus. 



ifeatiticum. Confifting of fteatite, and mica, 



Schneiderftein. Crond. miner, feil. 263, 5. 



Found in the mountains of Nornvav, S-uueden, Hungary, &c. 

 foft, and is ufed for the walls of melting furnaces, and when 

 feparated into thin platesj for the covering of houfes : proba- 

 bly not of this genus. 



