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Many specimens show crystal forms. These are usually the dode-
cahedron and groups of dodecahedrons. Cubes and octahedrons are also
observed. Some of the angular material shows a columnar structure,
the result of incipient crystallization. Most of the crystal specimens
show some rounding, indicating wear rather than growth in the gravels.
The slight amount of wear is readily explained by the fact that the crystals
occur in crevices in the bedrock and in slide rock (ancient talus) in the
bed of the streams and, therefore, were protected from abrasion by the
streams. They may have been included in cavernous or fractured quartz
when introduced into the gravels and thus protected. A nugget weighing
5 ounces was obtained in 1923 by Paul Barnette and William Slade on
Campbell creek. It consisted of a mass of arborescent crystal gold and
was almost entirely unworn, although it was found in surface gravels
overlying boulder clay and, therefore, must have been transported.

Some specimens consist of gold with small amounts of quartz, whereas
others show a fragment of quartz with a small amount of gold in vein-like
form through it. Others show many intermediate phases between these
two end cases. Specimens, also, have been found consisting of brecciated
quartz, of which the various fragments are held together by a vein-like
cement of gold.

Thick plate-like pieces of gold with the edges and corners rounded,
weighing up to 3 ounces, have been found. The sides of the plates show
linear ridges of gold separated from one another by polyhedral depressions.
The plates resemble fissure-fillings and the linear ridges represent veinlets
of gold deposited in subsidiary cracks in the walls of fissures.

In many specimens the rugged protuberances on the more angular
pieces of placer gold may be seen slightly rounded and bent over, just as
one would expect them to be shaped in the transition from vein gold to
placer gold. Many of the curved protuberances enclose in the concavity
beneath them, angular fragments of quartz, which had not been separated
from the gold by abrasion. When the bending of these salient parts of
the angular gold has proceeded to a more advanced stage, the quartz
grains become entirely embedded in the nugget. The mammillary character
of the surface of many of the nuggets is probably explained by such a
process.

One slightly worn piece of angular gold shows on both sides a number
of triangular depressions shaped like the corner of a cube, from which
crystals of pyrite have no doubt been removed.

Many specimens of galena, found in the placer deposits, show small
amounts of free gold. Close inspection of several such specimens and of
polished surfaces of them revealed the fact that the gold occurred in veinlets
or in well-developed cleavage cracks in the galena or in re-entrant parts of
the specimens.

One specimen, consisting of brownish sericite schist from the country
rock of the region, showed veinlets of gold traversing the rocks, both parallel
and transverse to the schistosity.

Polished and etched nuggets (Plate IX A and B) from the district
show several features which throw some light on the origin of the placer
gold. Nugget No. 1 (Plate IX A) shows crystal faces, but is somewhat