Stratigraphic setting and mineralogy of the Arctic volcanogenic massive sulfide prospect, Ambler district, Alaska
Economic Geology
By: J.M. Schmidt
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Abstract
The Arctic prospect, south central Brooks Range, is among the 30 largest of 508 volcanic-hosted massive sulphide deposits in the world. The massive sulphide lenses are interlayered with graphitic schist between metamorphosed rhyolite porphyries in Middle Devonian to early Mississippian metamorphosed volcanic, volcaniclastic and sedimentary rocks. Hydrothermal alteration is of three types: chloritic, phyllic s.l., and pyrite-phengite, each type strata-distinctively and respectively below, in, and above the sulphides. Maximum alteration conforms with metal zoning in the sulfides to suggest predominantly northwestward dispersal from a linear vent area in the elongate basin containing the deposit.-G.J.N.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Stratigraphic setting and mineralogy of the Arctic volcanogenic massive sulfide prospect, Ambler district, Alaska |
| Series title | Economic Geology |
| DOI | 10.2113/gsecongeo.81.7.1619 |
| Volume | 81 |
| Issue | 7 |
| Year Published | 1986 |
| Language | English |
| Publisher | Society of Economic Geologists |
| Description | 25 p. |
| First page | 1619 |
| Last page | 1643 |
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