Page 765 - calmining1890

TRINITY COUNTY. 713

Cinnabar. — About half a mile below Canon City, on Mogul Gulch,
jc. 6, T. 34 N., R. 10 W., cinnabar was found sixteen years ago in the
pdraulic claim of Wolff' Brothers. Upon uncovering the bedrock
i nail seams of very rich ore were discovered in the slates (sample 1
: =nt to bureau). Considerable prospecting was carried on by tunneling
:j ie formation, but the results were unsatisfactory. From the number
: strata and the general character of the formation (ferruginous slates),
ie section presents a favorable inducement for capital to invest in
irther explorations.
stuart's fork,

-
[eading in Salmon Mountains, T. 37 N., R. 10 W., and emptying into
rinity in T. 34 N., R. 9 W. During the past season, V veins from ten
) twenty feet in width have been discovered on Deer Creek, Sec. 19, T.
5 N,, R. 9 W.; formation, granite, with hornblendic slates. There are
flso through this township great belts of limestone, dolomitic, joining on
ie serpentine belt from the northeast. The quartz is white, contain-
ing sulphurets of arsenical iron, galena, copper, and zinc; but little free-
old is detected by panning. From average samples of the vein taken
his season, the assay returned by Falkneau gave gold at $12 56 and
ilver at $8 70 per ton, the gold being mainly contained in the sulphides.
k Locations: Dark Horse, Gray Eagle, Old Buck, and Little Gem.
Workings are mainly on the Dark Horse, by tunnel from creek, sixteen
•y seven feet in solid quartz; vein crops five hundred feet above the
funnel level; water power on Deer Creek; elevation at tunnel, five
jhousand three hundred feet. On Little Deer Creek, Sections 17, 18, and
9, there are large bodies of cement from sixty to two hundred and fifty
reet deep, composed of quartz gravel, covering from six to eight feet of
^uriferous gravel lying on the bedrock. But little prospecting has been
iarried on in this section, or any point of the Stuart's main or tributaries
or quartz or auriferous cement and gravel. This is accounted for by the
act that the stream yielded poorly in placer gold in early days. Gold was
bund at several points, but in limited quantities. Considering the pre-
cipitous nature of the stream — the water dashing over the rocks, no
opportunities for pools or formation of bars, rocky sides forming deep
*nd narrow gorges, through which the water poured into the Trinity — all
he gold was swept along with the disintegrated rocks to the mouth of
he stream into the Trinity, forming the flats and bars, yielding the
miner a rich reward. The mountain ranges and ridges in which the
waters of Stuart's Fork, Canon, and other streams head present a promis-
ng field for the prospector.

DEADWOOD DISTRICT.

(Plates IV and V.) T. 33 N., R. 8 W., M. D. M. This district is sit-
juated in the Trinity Range of mountains on the western slope, the min-
eral belt being a continuation of the French Gulch on the eastern slope.
,During the past year there have been but few discoveries made. The
Bartred Company are prospecting the lower levels of their property.
My examinations were principally of the property of the Brown
[Bear Company. In the report of the State Mineralogist of 1888, a com-
plete description is given of the company's mill and workings. The
mill has been running without interruption from that date. Sketch as