Mine detail: Hilltop No. 23 Mine

Previously called 'Hilltop Group'

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Location

Lat / long:

40.50637, -105.34392

Resource(M)

Primary:	Beryllium
Tertiary:	Uranium
Ore:	Beryl

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
Last production ended:	1958

Geology

Host rock:	Metasedimentary Rocks-Mica Schist;Pegmatite
Host type:	Mica Schist
Associated rock:	Pegmatite;Tonalite (Quartz Diorite)
Associated type:	Tonalite,Pegmatite
Structure:	Front Range Uplift, Thompson Canyon Fault, Mt Olympus Batholith, Ne-Trending Folds
Tectonic:	Central Cordillera (Southern Rocky Mtns)

References

MRDS	D010327
DEP	10087856
Reference	{Deposit:: THURSTON, W.R., 1955, PEGMATITES OF THE CRYSTAL MOUNTAIN DISTRICT, LARIMER COUNTY, COLORADO: USGS BULL. 1011, 185 P., 13 PLS.}{Deposit:: MEEVES, H.C., AND OTHERS, 1966, RECONNAISSANCE OF BERYLLIUM-BERING PEGMATITE DEPOSITS IN SIX WESTERN STATES: USBM IC-8298, P. 30.}{Deposit:: COLORADO DIV. MINES INF. REPT.}
Reporter	Schwochow, Stephen D.