Publisher's Synopsis
Excerpt from Proceedings of the Academy of Natural Sciences of Philadelphia, 1890
The specific gravity was found to be 2675. The rock cannot be considered rich in phosphoric acid. The latter, however, appears fairly disseminated through the whole mass. The pea-like globules were tested separately, together with fragments of bone and the dull brown-colored Limonite, phosphoric acid being found in each case. A quantitative determination of the acid has Of course com mercial interest but is out of the question here.
The name proposed for the rock was suggested by the pea-shaped globules. It may be considered as a variety of Phosphorite.
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