Tweeden

Prospect, Inactive

Commodities and mineralogy

Main commodities Au
Ore minerals gold
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale EA
Quadrangle map, 1:63,360-scale A-3
Latitude 64.1095
Longitude -142.3537
Nearby scientific data Find additional scientific data near this location
Location and accuracy The Tweeden prospect is near the mouth of Gold Creek, at the base of the slope on the north side of Gold Creek, approximately one-half mile upstream of the mouth of the creek. It is in the NW1/4 section 19, T. 27 N., R. 16 E., of the Copper River Meridian. The location is accurate within one-half mile. The Tweeden prospect is locality 11 of Cobb (1972 [MF-393]) and locality 58 of Eberlein and others (1977).

Geologic setting

Geologic description

The Tweeden prospect is located near the mouth of Gold Creek, where a cliff of Paleozoic greenstone has quartz veins and stringers oriented along along the cleavage; these veins are iron-stained and contain gold (Porter, 1912). Along the lower 4 miles of Gold Creek, Tertiary or Mesozoic granitic rocks crop out (Foster, 1976). In 1911, development at the Tweeden prospect consisted of excavating a 40-foot tunnel at the base of the cliff (Porter, 1912). Operations were discontinued that year when the owner was unable to recover the gold which was very fine.
Geologic map unit (-142.355979080027, 64.10916476354)

Production and reserves

Workings or exploration In 1911, development at the Tweeden prospect consisted of excavating a 40-foot tunnel at the base of the cliff (Porter, 1912). Operations were discontinued that year when the owner was unable to recover the gold which was very fine.
Indication of production None

References