44 
saloon, are, sulphato-carbonate, sulphato-tricarbonate, 
Nat. hist, and cupreous sulphate of lead.—Phosphates of 
lead, which are divided by Werner into brown 
lead ore, and green lead ore. Among the speci¬ 
mens of the brown phosphate, the most remark¬ 
able are the large six-sided prisms from Huei- 
goet in Britany, &c. 
(Case 43.) Ores of lead continued:— green 
2 )hosphate , massive, botryoidal, spicular, &c.; 
variously crystallized ; of various shades of green, 
passing into greenish-white, into yellow and 
orange; with ferruginous quartz, straight-foliated 
barytes, &c. from Freiberg in the Brisgau, hc.~ 
Arseniate of lead—Molybdate of lead, or yellow 
lead ore ; massive, lamelliform, and crystallized ; 
on compact limestone, he, chiefly from Bley- 
berg in Carinthia. The specimens of chromate 
of lead , or red lead ore, deposited in this case, 
are particularly beautiful and instructive: the 
accompanying substances are green lead ore, 
and sometimes small greenish-brown crystals of 
a substance (Vauquelinite) which appears to be 
chromate of copper and lead : the gaogue stone, 
in which the red lead occurs in the gold mines of 
Beresof, is a kind of micaceous rock mixed with 
particles of quartz and brown iron-stone— Murio- 
carbonate of lead, or horn-lead, the crystallized 
varieties of which have hitherto been observed in 
Derbyshire only. [An interesting suite of crys¬ 
tals of this scarce mineral substance will be 
found in the British Collection: Derbyshire.] 
Sulphate 
