66 NATURAL HISTORY. [NORTH 
lazuli (which furnishes the valuable pigment called ultra-marine); 
—the haiiyne , and a few other of the imperfectly known silicates of 
soda, lime, and alumina combined with sulphates. 
Case 56. Arsenious acid and arseniates: the former (also called 
arsenic-bloom, or octahedral oxide of arsenic) is frequently confounded 
with arseniate of lime, and the white octahedral crystals of it, often seen in 
collections on realgar and orpiment, are generally artificially produced in 
the interior of mines.—The arseniates in this glass Case are :— arseniate 
of lime, called pharmacolite, chiefly in white acicular crystals, from Wit- 
tichen in Suabia, and Riegelsdorf in Hessia.— Arseniate of iron or phar- 
macosiderite, wdiich occurs only crystallized, chiefly in cubes (whence Wer¬ 
ner’s name of Wiirfel-ertz), from Cornwall, from San-Antonio-Pereira, 
Brazil, on hydrous oxide of iron, &c. ;— skorodite, a substance which 
appears to be closely allied to Bourn on’s martial arseniate of copper.— 
Arseniates of copper, chiefly from Cornwall, consisting of the foliated 
arseniate or copper-mica, the lenticular arseniate or lentil-ore, and the 
olive-ore of Werner, w T hich are formed into five species by Bournon, 
but their exact composition remains still to be ascertained by exact 
chemical analyses. The euchroite also belongs to these, and the 
kupferschaum of Werner, at least that from Falkenstein in Tyrol: for 
some other varieties bearing that name appear to be referable to carbo¬ 
nate of zinc. —Arseniate of cobalt, or red cobalt ore, comprising the 
earthy ( cobalt crust ) and the radiated ( cobalt-bloom ) varieties, from 
Salfeld, Allemont, &c.— Arseniate of nickel. 
Case 57. Among the various phosphates deposited in this Case may 
be particularized— phosphate of iron, Werner’s vivianite, in variously 
grouped crystals (from Bodenmais in Bavaria, from Cornwall, from Fer¬ 
nando Po, &c.), massive and pulverulent: among the specimens of 
the latter are the massive variety of New Jersey, and several earthy 
blue varieties in clay, peat, wood, &c. ; the chalcosiderite of Ullmann, 
Werner’s green iron earth, and Thomson’s mullicite, are likewise phos¬ 
phates of iron.— Phosphate of manganese or triplite, from Chanteloube, 
near Limoges, in the department of Haute Vienne in France, where 
several other mineral substances have lately been found, the essential 
component parts of which are iron, manganese, and phosphoric acid. 
— Triphyline , a phosphate of iron, manganese and lithia;— del- 
vauxite, &c.— Phosphate of copper, of which the best characterised 
species are—the octahedral, or libethenite, from Libethen in Hungary; 
and the prismatic, or rhenite, from Rheinbreitenbach, where it occurs 
with quartz which sometimes passes into calcedony.— Phosphate of 
oxide of uranium: — the yellow uranite or uran-mica from Autin, 
Limoges, Bodenmais; and the green uranite, or chalcolite, chiefly 
from Cornwall and Saxony: both of them phosphates of oxide of 
uranium, but distinct by containing, the former a small portion of 
phosphate of lime, and the latter an equivalent portion of phosphate of 
copper.— Phosphate of yttria, or phosphyttrite, a very scarce mineral 
substance, first found in the granite of Lindenas in Norway, and subse¬ 
quently, in equally small quantities, at Ytterby in Sweden.— Phosphates 
of alumina, to which belong—the wavellite, a substance which was ori¬ 
ginally mistaken for a hydrate of pure alumina, and therefore called 
hy dr argillite, from Devonshire, Ireland, Brazil, Greenland, from Am- 
berg in Bavaria (called lasionite ), from Aussig in Bohemia, on sand- 
