MINEBK00683

• County: Gilpin
• Volume: 12
• Document: Inspectr
• Suffix: A

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GEOI:OGY '
- The geological survey of the district is incomplete.
The oharaoter eP country rook is granite and Feldspar and the
geologianl period is Arohean.
4
ORES & ORE BODIES .
The oharaoter of ore bodies ie Yiasure veins. The nnvber,'
eP known veins is Your. The strike is northoast and eouthwoat
and the dip is to. the north. The PittBburg and the L;eeker is
the same vein. 1n the.Pitxeburg tho vein hna been oponod to
~a height oY 634' and Yor. a ~.ength oP, 96b' . The. vein varies in
width Proa 1' to 18',.with an average width bP l~'. Tho en-
olosing rooks are granite and schist and the ganCue is schist '
with aeme Porphyry..Thore are no faults in tho vein worth
mentioning. One ore shoot is 400' long and tho other is b0'
leng.
The oharaotor oY voin Pilling is iron sulphides and
quartz carrying gold, silver, copper, lead and zinc. Tho per-
centage o2 each metal cannot be given but the value is Par
above the average oP this district, tho arerage value oY the
entire vein Pilling being $b0 per ton. About 9b~i of tho vein
Pilling is oY a amolting naturo and tho other b~, is Tree aill-
in~. The company does not own or oporato any mills or reduo-
.tien works and all ore produced Sa treated at the public eaelt-
ere and local mills in B1aoY, gawk, Colorado.
9 II R H A C E P D A R T.
The anrYace plant la ae tellowe;-
One,- b0 h.p. boiler. Une,- 80 h.p. boiler. Beth boilers
.are of tho Rotnrn TnDular typo. i'he b0 h.p. boiler was supplied
by Hendrlo ~ BolthoYP and the BO h.p. boiler xae supplied by
the Yine & Saelter Supply Co., both o2 Denver, Colo. Soft coal
ie Hoed Por Yuel and the water need in the boilers ie tnkea
Pros the ^ino. Tho preesure.oarried !a dbj. The boilers were
last inspected in Pasch, 1910 and nso in food condition.