Pennsylvania mine, Pennsylvania Mining District, Lincoln County, Nevada, USAi

Regional Level Types
Pennsylvania mine	Mine
Pennsylvania Mining District	Mining District
Lincoln County	County
Nevada	State
USA	Country

Sec 16? T6S R67E
Structure: Caliente Caldron Complex Ne-And Nw- Striking Faults.

Alteration: Argillization, Silicification,

Commodity: Ba is uncertain.

Deposit: Area of sheeted quartz veins and quartz-cemented breccia which was emplaced along a shear zone. Intervening wallrock fragments and lenses consist of altered andesite, mapped As miocene ash-flow tuff. Rocks are highly altered; feldspars altered to clay. There are some fragments of conglomerate or fine-grained clastic rock also. Fragments of quartz vein, recemented by white quartz were also observed, indicating multiple veining and brecciation. The quartz in outcrop is light green to tan to grey in color, sugary to massive in texture and characteristically vuggy with some gossany portions. The vugs are filled with euhedral prismatic quartz which is highly iron-stained. Fissure-type banding is common As is quartz after calcite textures. Some coarse white calcite vein is also present. The remnant most rock is thoroughly kaolinized and silicified. Most of the veins are subparallel with a general n-n W strike and shallow e-ne dip. The outcrop is sheared (fractured) both parallel to and at a high angle to the sheeted vein system. The dominant n W shearing and veining reflects a major ne-striking 30e-dipping fault which bounds the inferred southern limit of the caliente caldron complex. So

Development: Several core boxes indicate property was drilled. Open pit operation appears to be 2.5 years old. Equipment is modern, but no sign of current activity. Orange fagging on outcrops at west edge of pit indicates recent sampling of property

Rock formation(s): Prospect Mountain Quartzite;Pioche Shale


Ore(s): Shear Zone

Other Databases

Link to USGS MRDS:	10046480

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References