'> 



i8a EARTHS. AGGREGATE. 60. GneilTurp. 



sipularij. Confiding of garnets, and fhorl. 

 Gioeni iitolog. I^e/uu. p. 63. 68, 

 • Hoepfn magaz. Hol'v natur: \. tab. 2. 

 Found in the mountains of S'-wit%erlandy and detached royad 

 y^/u-viusy with iometimes a mixtare of mica. 



affnis^ Confining of granatine and genuine fhorl. 

 Gioefii hloiog. f^'ejwv. />. 70. 

 Found in the neighbourhood of Fifu-vius. 



pjpntiu^. Confifting of garnets, fhorl, and hornblend. 

 Hoepff} magax Helv. natur, i. tab. 3. 

 Found in the mountains of SnxHtzerland, 



bra^eaius. Confiding of garnets, and hornblend. 

 Hoepff\ mngciz Hel'V, natur. I. p, 279. 

 Found in the mountains of 'ii'^Mit'x.erland-, 



fLTgepatui. Confiding of garnets, mica, and fp^r. 

 irioetu litolog i^eji-i'u. p. 49. 

 Found in the neighbournoodof Fff/ww://. 



inmelhius^ Confiding of mica, and fpar.* 



Gioeni litohg. Vefwv. p. j^'6. 



Found in the neighbourhood of f^e/wviuj^ 



lucidus. Confiding of a(Slinote, and fpar. 

 Gioeni li to logs Vefunj. p. bo. 



Found in the neighbourhood oi Vejufvins, and may probably b^ Jj 

 an amygdalite. 



aslsstiniti. Confiding of afl)edus, and marble. 

 Giceni litnlog. Vefwv. p. 48. 

 Found round Fe/wvius, and is hardly of this genus, 



60. GNEISS UM. Cbmpofed of parts cohering 

 together without any intermediate cement, often 

 in the form of cryftals;^ and fometimes alternat- 

 ing in layers, of a flaty or rarely a fibrous tex- 

 ture forming plates laid on each other: found in 

 lofty primitive mountains, generally refling upon 

 beds of granite: hard, not melting before the 

 blowpipe nor mouldering in the air. 



firnacum. Confiding of the greater part quartz, and mica. 

 Sax. arenofo micac. Syst.nat, xii. 3, p, 79. «, 33. 

 Saxum quartz. Wall, fy it. 1. /. 410, «, 5, 

 Gneils. Kirnx: an miner aL 1. p. 3^6. 

 Micaceous flate, Schmei/ser miners \, p,i\o^ 



