PO-breccia.jpg


Summary

Description
English: Silicified and mineralized breccia, light gray is mostly dolomite with a little translucent quartz. Dark gray is jasperoid and ore minerals. Veinlet along lower edge of specimen contains sphalerite in carbonates, Pend Oreille mine. Pend Oreille County, Washington.
Source 1936. Plate 23-B, U.S.Geological Survey Professional paper 202. 1943. http://libraryphoto.cr.usgs.gov/htmllib/btch289/btch289j/btch289z/btch289/pcf00091.jpg , Transferred from en.wikipedia to Commons by Danmichaelo .
Author

Licensing

Public domain
This image is in the public domain in the United States because it only contains materials that originally came from the United States Geological Survey , an agency of the United States Department of the Interior . For more information, see the official USGS copyright policy .

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Original upload log

The original description page was here . All following user names refer to en.wikipedia.
  • 2008-05-12 17:55 Tillman 1400×1349× (1442407 bytes) Silicified and mineralized breccia, light gray is mostly dolomite with a little translucent quartz. Dark gray is jasperoid and ore minerals. Veinlet along lower edge of specimen contains sphalerite in carbonates, Pend Oreille mine. Pend Oreille County, Wa