familar
with, we owe to the industry and sharp sight of these children. It
would aid much in the development of new min-eralogical fields if this
plan of Mr. Stephenson's could be widely introduced. One of the
minerals most likely to be mistaken for the diamond is a form of small
quartz crystal found principally at Santa Fe and Gallup, N. M.; Fort
Defiance, Ariz.; Deadwood, Dak.; and Shell Creek, Nev. These crystals
range in size from i to 5 millimeters and the prism is nearly or
entirely obliterated. In addition to this, as a rule, the surface is
slightly roughened, and by an inexperienced person such a crystal is
easily mistaken for an octahedron, which is almost universally
considered to be the only diamond shape.
