Daisy Occurrence, Chistochina Mining District, Southeast Fairbanks Census Area, Alaska, USAi

Regional Level Types
Daisy Occurrence	Occurrence
Chistochina Mining District	Mining District
Southeast Fairbanks Census Area	Census Area
Alaska	State
USA	Country

Location: This occurrence on the Daisy claims is along the West Fork Chistochina River about 1.2 mile above the confluence of West Fork Chistochina River and the main channel of the Chistochina River. It is in the SE1/4NW1/4 section 36, T. 20 S., R. 14 E., Fairbanks Meridian. The site corresponds to location 30 of Rose (1967) and is accurate. It is also near a location at which scheelite was panned from gravel of the West Fork Chistochina (Rose, 1967).
Geology: A stock of granodiorite or quartz monzonite is exposed in outcrops on the north and south sides of the West Fork Chistochina River near this site (Rose, 1967). To the northwest, the intrusion is in contact with volcanic rocks that are locally pyritized and iron-stained. The gravel nearby in the West Fork Chistochina River probably contains some placer scheelite (Rose, 1967; W.J. Nokleberg, written communication, 1996). The pyritized volcanic rocks and adjacent intrusion were covered by eight Daisy claims in 1966. The Daisy claims were part of an 85-claim group staked in 1985 by Norman Moore, possibly on a porphyry copper prospect (Rose, 1967).
Workings: Claims were staked in 1966; only limited surface sampling has been done.
Age: Holocene placer and Mesozoic pyritization.
Alteration: Pyritic alteration of granitic and volcanic rocks.

Commodities (Major) - Cu (?); (Minor) - W (?)
Development Status: None
Deposit Model: Porphyry Cu (?) (Cox and Singer, 1986; model 20c); placer W.

Other Databases

Link to USGS - Alaska:	MH274

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References