PIIARMACOLITE. 135 



PHAB.MACOLITE. 



Pharmacolitc. JAM. Syst. Vol. III. p. 543. Pharmaco- 

 lite. Arseniate of Lime. PHILL. p. \18. 



Capillary crystals, in globular aggregation. Glo- 

 bular, reniform, botryoidal. Composition thin 

 columnar ... impalpable. Farinaceous. 



Lustre vitreous ; also pearly in the thin columnar 

 particles of composition. Colour white. Trans- 

 lucent ... opake. 



Sectile, very soft. Sp. Gr. = 2-640, KLAPROTH. 



Before the blowpipe it emits an arsenical odour, and 

 melts with difficulty into a white enamel. In nitric acid 

 it is dissolved without effervescence. According to KLAP- 

 ROTH and JOHN, it consists of 



From Wlttichen. From Aiidreasberg. 

 Lime 25-00 27'28. 



Arsenic Acid 50-54 45-68. 



Water 24-46 23-86. 



It is found in the principality of Fiirstenberg, at An- 

 dreasberg in the Hartz, at Riechelsdorf in Hessia, and 

 other places, in veins that also contain native Arsenic, 

 several species of Cobalt-pyrites, &c. 



The description of the Picropharmacolite of STROMEYEB. 

 (Untcrsuchungcn. Vol. I. p. 135.), does not differ from that 

 given of the Pharmacolite. The only difference discovered 

 between the two substances consists in a small quantity of 

 magnesia which the former contains. It is cpmposed of 

 Lime 24-646. 



Magnesia 3-218. 



Oxide of Cobalt 0-998. 

 Arsenic Acid 46-971. 

 Water 23-977- * 



It occurs in the cobalt mines of RiecheJsdorf in Hessia, 

 along with prismatic Hal-baryte. v 



