On a New Mode of Occurrence of Ruby in North Carolina

Prof. J. W. Judd, W. E. Hidden and Dr. J. H. Pratt

Mineralogical Magazine; October 1899 v. 12; no. 56; p. 139-149; DOI: 10.1180/minmag.1899.012.56.01
© 1899, The Mineralogical Society
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