C 1*7 3 



v v. Rose Spar, Red Stone, cryftallized, inde- 

 terminate ; amorphous, thick foliated. 



C. ADAMANTINE EARTH, or CORUN- 

 DUM, difcovered by Klaproth, in adamantine or 

 diamond fpar. 



a. Adamantine Spar of a greyifh colour, in- 

 clining to greenifh white, chocolate brown, Sec, 

 cuts glafs, and (cratches other gems ; ftrikes fire 

 with fteel ; is not affe&ed by fulphuric, nitric, or 

 marine acid ; exhibits fix-fided fhort rhomboidal 

 prifms, rounded on the top, of a lamellated tex- 

 ture, mining in certain directions. Anal. Ada- 

 mantine 68. Silex 31,5. Iron and nickel 00,05, 

 Klaproth. 



Corundum of China, of Peninfula of India. 

 Argillaceous earth 89,50 — 84,0 

 Siliceous earth 5>5° — 6>50 



Oxyde of iron 1,25 — 7,50 



Lofs — 3,75 — 2,0 



100,0 100,0 



Chs. Greville. 



H. JARGON EARTH, difcovered by Klap- 

 roth, in the ftone called jargon, or zirgon, of 

 Ceylon. 



a. Jargon, cryftallized in fhort tetrahedral 

 prifms, with tetrahedral pyramids ; indeterminate, 

 in fmall grains, and fmall flat pebbles; fcratches 



glafs ; 



