MINEBK00683

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

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• Rrsatenac - 3. _
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~i '! GEOIrOGY-Contin.
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The oharaoter oY oountry rook is granite and schist and the
geological period ie Archean.
ORE S Fa ORE BODIES .
Tho oharaoter oY ore bodies is 1Yesure •eins. The Watoona,
Axc~uddell and FroSttenao are on the same vein. Two other known
veins belong to this group but all oY the work done to date hoe'
been done on the b'rontenao vein. This has Deen opened to a len-
gth of':S,000' and to a height of 1,lUU'.. The strike ie north-
' east and southwest and the dip is to the north. The onoloaing
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reek la granite and the ganeuo is altered granite. In the Xron-
tenac vein is ono continuous ore shoot 3,000' long. Tho vein
varies in width Tron 2' to lti', with ea average width of b'.
There are no Vaults in the vein.
The oharaoter or vein Pilling is iron sulphides and quartz,

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e later report.
oarrying gold. silver, oopper, lead and zino, with an averaEe
value oT $10 per ton. Gold and oopper predominate but ea no
essays or analyses oould be obtained the peroenta~o 02 the diY-
ierent metals oannot be given. About lUy6 of the vein filling
is smelting pre and 90,5 is ooncentrating ore. All ere has boon
treated at Publio works bnt a oonoontrating sill at Bleok Hank,.
Colorado ie in oouree oY oonatruotion by the Company and when
ooapleted, in the near tnture, all oonoentrating era will be
treated in this sill. yeeorlption oY this mill will boglvon in
9 U R 1l A C S P L A A T.

- Tho enrteoe plant ooneiats oP the iolloning;- one, 6' x
16', b6 rimes, tl0 h.p., return tnbnlar Doiier on the Andnddell
shalt; one, 100 h.p., Blaiedele, lo-drills, air oomPresaor at
Yreatonao sine; ens, 6-drill, double-ooaponnd, Ftand air oemprese-
or at the Aududaell minas one, 1 h.p. motor to run San at Gth.
level in the pronteneo ehaYti tl7 h.p. eleotrio aotor Sor rnn-
sing holet; 100 h.p, eleotrio motor to run air oeapreeeors;