TAB. II. 



CALX carbonata. 

 Crystallized Carbonate of Lime. 



Class 2. Earth. Order 1. Homogeneous. 

 Gen. 1. Lime. Spec. 2. Carbonate of Lime. 



Spec. Char. Lime with carbonic acid effervesces 

 with the stronger acids, and becomes quick- 

 lime in a strong heat. 

 Syn. Chaux aeree. Bom, v. i. 28. 

 Kalk-stein. EmmerJing, v. 1. 437. 

 Aerated or mild calx. Kir. v. 1. 75, 

 Chaux carbonatee. Hauy, v. 2. 127. 



Div. 1. Crystallized. 

 Syn. Spath calcaire. Born, v. 1. 107: 

 Kalk spath. Emmerling, v. 1. 455. 

 Foliated and sparry lime-stone. Kir. v. 1. 86, 

 Calcareous spar. Bab. 7. 



Chaux carbonatee. Formes determinables. Haiiy, 

 v. 2. 130. 



.r ound chiefly in lime-stone rocks wherever they occur in 

 Great Britain, as Derbyshire, some parts of Wales, Wilt- 

 shire, Devonshire, &c. 



It is easily scraped with a knife ; fracture in laminae paral- 

 lel to the nucleus, which is rhomboidal, its obtuse angles 

 being 101 30', its acute 78° 30'. When sufficiently trans- 

 parent, it gives a double refraction. It is never quite opaque, 

 the colours are mostly white or lightish brown, sometimes 

 reddish, seldom yellow or green, scarcely ever crimsorx, 

 blueish, purple, or black. 



