Deer Isle

United States· MaineUnknown
Contained Copper
—
Average Grade
4.22%
Deposit Type
VMS — Bimodal-Mafic
Discovery Year
1870

Overview

Dissemination, massive thin lenses, up to 2.4 m thick, 61 m along strike, 79 m depth. In part contains contact-metamorphic deposits of sulfides and garnet formed by regional metamorphism.

Geological Context

Tectonic Setting: Pelite-mafic in mature oceanic backarc

Resources & Operations

Production Start: 1870

Data Provenance

Source: USGS MRDS

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