”ikaceum. 
‘^pinnm. 
^ctrlinum, 
‘^hcnher- 
gtnse. 
Radians, 
^oxonum. 
EARTHS. AGGREGATE. 6o. GneilTum. 183 
Found in moft mountainous countries of Europe, in innumera- 
able varieties of proportion, combination, diftrioution, co* 
lour, and hardnefs, and is chielly covered with argillaceous 
Hate, fand, and limeftone ; it is formed of diainfl plates laid 
on each other, and feparaled by thin layers ot mica, and is 
generally rich in metallic ores: it is uled for laying the beds 
of large melting furnaces. 
Confifting of the greater part mica, and quartz. 
Glimmerfchiefer. I'Ferner Clajfir . f. to. feii. g. 
Shiftofe mil a. Kr-ixan. miner. I. p. 348. 
Micaceous Ihiftus. Thomjinchem 4. />. 131. 
Found in Norway, forming entire mountains, of a ftlvery co- 
lour and fp.eu'Jour ; the plates of mica are extremely thin and 
clofely compadled together, fo as to form diftina tables; the 
quartz is generally difpufed in fmall veins, granulations, or 
larger ftrata. 
Confifting of quartz, mica, and garnets. 
Saxum micaccum Eyst. not. xii. 3. p. 77. n. 22. 
Saxum quartzo. Wall. fpt. i. 412. ». 7. 
Found in moll lofty alpine mountains of Europe: the mica is 
moftly filvery, fometimes predominant, fometimes pretty 
equally diftributed, fometimes hardly vifible: the garnets are 
more commonly red than brown, fometimes of a common 
form and of conlidcrable iizc, fometimes cr) ttallized and lefs ; 
the plates of which it is compofed are frequently undulate : 
fometimes there is found with it a portion of Ihorl, talc, or 
feldfpar: when the quartz is in greater proportion it is made 
into mill-llones. 
Confifting of quartz, mica, and fhorl. 
Found in the mountains of Sav/Vzfr/ajiif, efpecially St.Gotihsrd’s, 
in thofe Hungary near Schemnit», and containing veins of 
gold or filver, and m thofe of Bohemia, Saxony, and Nor<way. 
Confifting of quartz, mica, and fhorlite. 
Found near Altenberg in Saxony, having veins of tin within it. 
Confifting of quartz, mica, and adinote. 
Cron ft. mineral, feii. 261 33. 
Saxum qviaTtzo, We'xlLfyit. x.^. 4*3 
Found in ‘Jemtia in Snueden. 
Confifting of quartz, mica, and feldfpar. 
Gneifs. Werner ClaJJif. p 8. feS. 8. 
Found in the mountains of Saxony, Bohemia, Snvitxerland, and 
SileCto, rarely in the Carpathic mountains,, in great varieties 
of proportion, colour and conftituent parts : the mica is gene- 
rally predominant, and the feldfpar the leaft. 
