Penn

United States· CaliforniaUnknown
Contained Copper
—
Average Grade
4.24%
Deposit Type
VMS — Bimodal-Felsic
Discovery Year
1861

Overview

Massive lenticular bodies (pyrite-sphalerite-chalcopyrite-bornite), dissemination (pyrite-sphalerite-chalcopyrite), stringer (pyrite-chalcopyrite-bornite-tetrahedrite-gold). Synmineral quartz porphyry. West limb of overturned south plunging anticline.

Geological Context

Tectonic Setting: Siliciclastic-felsic in mature epicontinental arc

Resources & Operations

Operator: 0

Production Start: 1861

Data Provenance

Source: USGS MRDS

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