Quadrangle map, 1:250,000-scale | FB |
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Quadrangle map, 1:63,360-scale | A-4 |
Latitude | 64.103 |
Longitude | -148.836 |
Nearby scientific data | Find additional scientific data near this location |
Location and accuracy | The Rex Creek mine is located in sec. 25, T. 9 S., R. 7 W., Fairbanks Meridian. Rex Creek is a tributary of California Creek that is south of Rex Dome. The creek has been placer mined for a mile, about 3 to 4 miles above its mouth; the mine is approximately 2.5 miles southeast of Rex Dome. The mine is locality 64 of Cobb (1972 [MF 410]). |
Geologic descriptionBedrock in the upper drainage is quartz-orthoclase-sericite schist and augen gneiss of the Totatlanika Schist; in the lower reaches, the creek is underlain by the Tertiary sandstone and conglomerate of the Healy Creek Formation (Wahrhaftig, 1970 [GQ-810]). The ground that was mined was 6 to 8 feet deep; the gold was close to or in the top foot of decayed schist bedrock (Capps, 1912, p. 47). Gold occurs in both stream and bench placers (Capps, 1912, p. 47). A bench about 50 feet above the stream was mined in 1910 (Maddren, 1918). The gold was 800 fine (Glover, 1950). | |
Geologic map unit | (-148.838344054062, 64.1025416298006) |
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Mineral deposit model | Placer Au (Cox and Singer, 1986; model 39a) |
Mineral deposit model number | 39a |
Age of mineralization | Quaternary placer. |
Workings or exploration | Prospecting began in 1905 or earlier, and mining was reported in 1910 (Capps, 1912, p. 44,47). Maddren (1918) reported that there was no mining in 1916. Mining occurred from 3 to 4 miles above the mouth, where a bench 50 feet above the creek was mined (Maddren, 1918). In 1925, one man ground sluiced on Rex Creek (Wimmler, 1925 [ATDM MR 195-8, p. 43]). Prospect drilling was reported in 1939 (Smith, 1941, p. 51). |
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Indication of production | Yes; small |
Production notes | Total production through 1916 was worth about $5,000, or less than 250 ounces (Maddren, 1918, p. 380-383; Cobb, 1976 [OFR 76-662, p. 119]). |
MRDS Number | A015344 |
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References | |
Reporters | J.R. Guidetti Schaefer and C.J. Freeman (Avalon Development Corporation) |
Last report date | 7/31/2001 |