1866. | Mining, Mineralogy, and Metallurgy. 427 
the manager of the principal Ducktown mines, gives its com- 
position as :— 
Sulphur. ‘ . 33°36 
Copper : : . c 14-00 
Iron . : ° ¢ : - : Ons 
Zine . : : ; : : ‘ ~ 41°86 
101°40 
Marcylite, a mineral already described in Shepard's ‘ Mineralogy,’ 
but not hitherto obtained in a pure state, is, according to Mr. Tyler's 
' analysis :— 
Sulphide of Copper. . ° : « | 47°70 
Sulphide of Iron . 5 ° : ° g epte a 
Oxide of Copper . - : : - 39°70 
Sulphate of over c . c : oP ees 
Water 4 . ° . : - 9:00 
101:39 
The name given to this copper ore is unfortunately ike Mar- 
celine —one of the oxides of manganese, for which, by its name, it 
may be mistaken. 
Moronolite appears to be nearly identical with Gelbeisenerz and 
Jarosite, a potash-copperas,* the only peculiarity being that while 
the two last have each but one of the alkalies, they are both present 
in Moronolite. 
Professor Shepard} calls attention to a mineral found in the old 
workings of the Southampton lead mine in Massachusetts, which 
proves to be Scheeletine, a tungstate of lead. He also notices the 
discovery of Uwarowite,—a lime-chrome-garnet,—from Wood's 
chrome-mine, Texas, Pennsylvania. 
Professor E. J. Chapman, of Toronto, writes of the discovery of 
native lead in some mines on the north-west shores of Lake 
Superior. Native lead has been found by the late Captain Stephen 
Eddy, in the mines of the Duke of Devonshire, in Yorkshire. 
A new arseniate of zinc, called after M. Adam, Adamite +t—the 
erystal, first examined by M. Friedel—having been found in the 
cabinet of that mineralogist,—has been brought to the notice of the 
Academy of Sciences of Paris. The specimen was from Chili, and 
was mixed in a mass of native silver with Limonite. Chemical 
analysis showed it to consist of :— 
Arsenie Acid 4 . s 59-95 
Oxide of Zine . - A . - » 384-32 
Protoxide of Iron i 2 c : 1°48 
Oxide of Manganese . : - . . a trace. 
Water ; : : = 3 C er Sah, 
100-30 
* See ‘ Bristow’s Glossary of Mineralogy.’ 
+ ‘ American Journal of Science and Art,’ No. 122. 
t ‘Comptes Rendus,’ No. 12, p. 692. 
