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LARGE SPECIMEN OF IGNIMBRITE FROM LINCOLN CO. , NEVADA




Item History & Price

Information:
Reference Number: Avaluer:49163246Modified Item: No
Original Description:
THIS IS A LARGE HAND SPECIMEN OF IGNIMBRITE (WELDED TUFF).   THE SPECIMEN IS APPROXIMATELY 12 X 8 X 7 cm.  IT WEIGHS 499.6 gm .  THE SPECIMEN IS FROM MT. WILSON, WILSON CREEK RANGE, LINCOLN CO., NEVADA.  IGNIMBRITE IS A TYPE OF WELDED TUFF COMPOSED COMPOSED OF CRYSTAL FRAGMENTS, SHARDS, PUMICE CLASTS AND PIECES OF COUNTRY ROCK. IT IS A VOLCANIC IGNEOUS ROCK FOUND AROUND THE PLANET.  IT IS FORMED FROM HIGH TEMPERATURE VOLCANIC ASH EJECTIONS WHICH FUSE TO A ...HARD ROCK. THIS IS AN EXCELLENT CLASSROOM EXAMPLE OF IGNIMBRITE OR WELDED TUFF.  THE "IGNIMBRITE PHASE" IN THE "GREAT BASIN" OF THE WESTERN US BEGAN IN SOUTHERN IDAHO ABOUT 20 MA AND GRADUALLY WORKED ITS WAY SOUTH TO SOUTHERN NEVADA OVER THE NEXT 15+/- MA.  PLEASE CONTACT ME IF THERE ARE ANY QUESTIONS ABOUT THIS SPECIMEN.  SEE PICTURES.  I WILL COMBINE SHIPPING WHEN POSSIBLE.  THANKS FOR LOOKING. 


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