Min. [See quot. 1823.] A variety of melilite from Vesuvius.
1823. H. J. A. Brooke, in Q. Jrnl. Sci., XVI. 276. The next mineral I shall have to describe came to me with some other Vesuvian substances, from Dr. Somerville, from which circumstances I have named it Somervillite.
1837. Dana, Min., 291. Somervillite accompanies black mica and other minerals, in the ancient scoria of Vesuvius.
1869. J. Phillips, Vesuv., x. 290. Humboldtilite—‘Mellilite,’ ‘Somervillite,’ ‘Zurlite,’ &c.—occurs in gray micaceous lava of Somma, and ejected blocks.
