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Rocks and Metals

Rocks

 

Granite

Click to see a larger version of this imagegranite rock sample

Granite forms the backbone of Cornwall stretching from Dartmoor in Devon South-westwards to the Isles of Scilly.


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Killas

Click to see a larger version of this imagekillas rock sample

The metamorphic rock surrounding a Granite intrusion is in Cornwall, is known as Killas or Greenstone.


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Comment left by bluespice on 2010-02-21 16:43:01

nice huh!^_^

Comment left by Gary Parrott (es Stoper) on 2012-05-04 18:37:02

Kilas lies just off the coast at Geevor and is far easier to drill than granite, it also takes less explosive to break as it's very brittle. I was stoping on 18 Treglowns in 89-90 and we were just coming out of the granite and into the Kilas. Tin in Kilas equals big money to a stoper as far more ground can be broken per shift and the drills stay sharper longer.

 

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