OT 
TAB. CCXLIX. 
ZINCUM Oxy-sulphureum. 
Oxy-sulphuret of Zine. 
Class 3. Metals. | Order 1. Homogeneous. 
Gen. 6. Zinc. Spec. 3. Sulphurated Oxide. 
Div. 2. Imitative, mammillated. 
Syn. Blende. Dr. Kidd in Nicholson's Journal, 
v.14. 134. 
Weare glad to give a figure of a new substance to the 
‘mineralogical world, by favour of Richard Phillips, Esq., 
especially as it has been analysed by Dr. Kidd. Its first 
appearance gave rise fo many queries; for the workmen 
who found it considered it as wood-tin, but its resemblance 
to some of the blistered Copper Ore from Cook’s Kitchen, 
&c. excited different ideas. Dr. J. Kidd shows it to be 
an Oxide of Zinc with a largish proportion of Sulphur. I 
believe only one variety has been found, and this has always 
in some degree a bubbled appearance; the bubbles more 
or less solid, with a variety of tints, from dark dull yel- 
lowish brown to nearly white, and rather irregularly coated. 
The fracture is rather conchoidal, not striated, with a 
waxy appearance. Externally this mineral is light yellowish, 
often smoky or dusky grey, sometimes with a bloom like 
a plum, or varying to a dull crimson, occasionally some- 
what iridescent. 
The specimen figured is on a matrix of Arsenical Iron and 
Quartz. 
VOL. III. H 
