Identification Of These Rocks

Geological Adve...

Rank:

Contact:

Identification Of These Rocks

Submitted by Geological Adve... on Mon, 07/02/2012 - 11:01.

I found these rocks around the Great Langdale area of the Lake District. The rock is slate, with what I believe to be quartz (though I am new to geology.)

Please could someone identify what it is and any other relevant information.

http://www.flickr.com/photos/61599995@N02/7486131860/in/photostream/

http://www.flickr.com/photos/61599995@N02/7486127572/in/photostream/

http://www.flickr.com/photos/61599995@N02/7486122872/in/photostream/

Thanks

Gus Horsley

Rank:

Contact:

I agree that the mineral is

Tue, 07/03/2012 - 11:44

I agree that the mineral is quartz but I think the matrix rock is tuff, a consolidated volcanic ash.

Geological Adve...

Rank:

Contact:

Thanks for that answer. I

Tue, 07/03/2012 - 16:59

Thanks for that answer. I also collected this piece of rock which at first I thought was slate, but I guess it is tuff again. Please could you just confirm for me, also on this item of rock there is a bronze coloured streak on the rock, what is this?

http://www.flickr.com/photos/61599995@N02/7495411024/in/photostream/

Gus Horsley

Rank:

Contact:

Looks like another volcanic

Wed, 07/04/2012 - 06:44

Looks like another volcanic rock to me. Slate tends to split very easily along clearly defined planes (think of roof slates). The brown colouration will be a surface coating of iron oxides which may be an oxidation product from the rock itself or could be from contact with something made from iron (like a metal fence stake).

GeologyRocks