56 C. U. Shepard—Mineralogical Notices. 
vitreous arab a of Saleix oo analyzed by Pisani; 
though it must be t in mind that example analyzed by 
him had been so much altered as to “0K its hardness reduced 
to 8. Iam therefore led to regard the Galway crystals as the 
original, unaltered mineral, from which couseranite and dipyre 
have originated through hydration, * in the same manner as 
scapolite has given rise to wilsonite, antite, algerite and 
terénite. Should it prove a new species, I propose to call it 
Ontariolite. 
2. Cassiterite at Coosa, Ala. 
Among the smaller fragments and grains of tantalite from 
this Se locality, I find numerous crystals of cassiterite, 
the largest — do not exceed the size of a pea. Some o 
narrow faces of the primary prism, between the pyramids. 
3. Yttro-tantalite. 
A single small crystal supposed to be yttro-tantalite was 
weleds ed along with the cassiterite. Its form is that of a right 
mbic prism of about 122°, having its acute terminal angles 
th otaned by two grigta inclining to one another across the 
sbtaas lateral edge of the prism at an angle of very near 125° 
Specific gravity =6 001. 
4, Note upon the Paracolumbite. 
This ambiguous mineral, whose locality at Taunton, Mass., 
was lost sight of for many years, has been re-discovered ; and 
— continues to be met with in collections under the above 
he analysis of Pisani proved that it had no chemical 
oalasioni to columbite, but gave a result not altogether satisfac- 
tory for ilmenite, (menaccanite) to which he referred it. In 
view of its decided edly lower specific gravity than ilmenite, its 
fusibility before the blowpipe, and its large content of silicate 
of alumina, it remains undecided whether it properly belongs 
where Pisani has placed it; and I would therefore suggest that 
until farther information is obtained, the name paracolumbite 
be changed to para-ilmenite. 
5. Hemihedral forms of Staurolite. 
Among the large and perfect crystals of this mineral, found 
loose at Morganton, emihedral forms are not unfrequent, 
both as single and com ase stals. The hemihedism 
relates to the alternate sexy seaitiint angles, which are re- 
placed by broad single plan 
* Possibly chiastolite may have been germ produced, though the origin 
must have been attended with a more radical metamorphism. 
