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QUARTZ-SCHORL ROCK - Devon

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Home > MINERALS > UNUSUAL ROCKS AND MINERALS - WEIRD AND WONDERFUL !
  
QUARTZ-SCHORL ROCK
  
An unusual banded boulder with one cut face
  

Teign Valley Gravels

Chudleigh Knighton Clay Works

Chudleigh Knighton, Devon

  
An interesting banded rock consisting of black tourmaline (schorl) and quartz.  
One face has been cut flat with a smooth but unpolished finish.  Collected in 1999 and from an old collection.
  
This type of rock originated from the strata above the Dartmoor granite pluton where hot, volatile fluids containing boron penetrated fissures in the surrounding country rock depositing crystals of tourmaline (boron silicate). 

  
Click on a picture for a larger image

Size:  12 x 8.5 x 7.5 centimetres
Weight:  1.22 kilograms


PRICE: £36.00
Sorry, this item has been sold or is out of stock