Surprise Creek Occurrence, Bonnifield District, Denali Borough, Alaska, USA
Location: This occurrence is at an elevation of about 4,100 feet on Dexter Creek, a tributary of the Totatlanika River. The map site is in the SW1/4 of sec. 27, T. 11 S., R. 4 W., of the Fairbanks Meridian. The location is accurate to within 1 mile.
Geology: The country rocks in the general area of this occurrence are Lower Paleozoic or possibly Upper Precambrian schists and younger Paleozoic Keevy Peak Formation. The deposit is in schist, and consists of stratiform layers of massive galena and sphalerite, accompanied by quartz.
Workings: There has been only surface exploration to date.
Age: Mineralization is syngenetic with the Lower Paleozoic or possibly Upper Precambrian hostrocks.
Commodities (Major) - Pb, Zn
Development Status: None
Deposit Model: Kuroko massive sulfide(?) (Cox and Singer, 1986; model 28a)
| Galena|| Quartz|| Sphalerite|
3 entries listed. 3 valid minerals.
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