-40%

2519 ELY GREENSTONE ROUGH, APPROX 2.7 BILLION YEARS OLD. FROM ELY MN.

$ 7.65

Availability: 100 in stock
  • Refund will be given as: Money Back
  • Condition: Used
  • Return shipping will be paid by: Seller
  • All returns accepted: Returns Accepted
  • Item must be returned within: 30 Days

    Description

    ELY GREENSTONE IS ONE OF THE OLDEST ROCKS ON THE PLANET AT 2.7 BILLION YEARS OLD.  FOR A WHILE IT WAS CONSIDERED THE OLDEST ON THE PLANET.  IT COMES FROM THE ELY, MN AREA WHERE IT OCCUPIES A BAND ABOUT 40 MILES LONG AND 4 TO 8 MILES WIDE.  IT IS A METAMORPHIC ROCK FORMED WHEN BALSALTIC LAVA ENCOUNTERED SEA WATER, IT IS USUALLY A GRAY GREEN TO YELLOW GREEN.  IT COMMONLY CONTAINS VEINS OR “BUBBLES” OR WHITE, CLEAR OR PURPLE ROCK WHICH IS USUALLY CALCITE, QUARTZ OR RARELY, AMETHYST.
    ELY GREENSTONE TAKES A GOOD POLISH, NOT AS GOOD AS SOME AGATES AND JASPERS BUT MORE LIKE CHINESE WRITING ROCK OR THE HARDER BANDED RHYOLITES OUT OF FALLON, NV.  USUALLY VERY SOLID BUT IT WILL OCCASIONALLY CONTAIN INVISIBLE FRACTURES SO FLEX YOUR SLAB PRIOR TO WORKING.  GREENSTONE FROM AROUND THE PLANET ARE CONSIDERED THE OLDEST EXPOSED ROCK.  THEY WERE FORMED WHEN BASALTIC LAVA CAME IN CONTACT WITH ANCIENT OCEANS AND WAS ALTERED OVER THE MILLENIUMS BY HEAT AND PRESSURE UNTIL THEY WERE EXPOSED LATER DUE TO GLACIERS OR OTHER GEOLOGICAL ACTIVITY.
    A NICE PIECE WITH SOME INTERESTING PATTERNS.
    APPROXIMATE MAXIMUM DIMENSIONS ARE 5" x 4.5" x 3.25".  WEIGHT IS 3.9 POUNDS.  PHOTO TAKEN IN SUNLIGHT, SEE RULER FOR SCALE.
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