C. U. Shepard on Sheeletine and Uwarowite. 215 
Art. XXX.—On Scheeletine at the Southampton Lead Mine, Mas-. 
sachusetts, and Uwarowite at Wood's Chrome Mine, Texas, Penn- 
sylvania ; by CHARLES UPHAM SHEPARD. 
_1. Scheeletine—This mineral was handed me for determina- 
tion early in November by Mr. Clark of Northampton, who has 
watched with much diligence -the materials thrown out during 
the recent working of the old Southampton lead mine. He 
found the few unknown crystals, of which he presented me four, 
occupying together a cavity in a cellular quartz gangue that ap- 
peared to have once contained galena. They prove to be Scheele- 
tine. They are more or less coated by yellow crystals of carin- 
thite, in small, low, double eight-sided pyramids; and one of 
them is also partially incrusted by a red-brown, somewhat botry- 
oidal mineral which affords the blowpipe reaction of vanadinite, 
though the quantity employed in the trial did not permit a com- 
plete verification of this inference. ; 
yellow while warm, and opaque and penyisl after it is cold. 
b 
= 
Precipitation of the oxyd of wol ramium, : 
