Mid Cornwall Minerals
 Mid Cornwall Minerals          

Geological and Mineral Slice's.


This page is dedicated to the growing selection of polished slice's and cut sections we are producing,  some of which will be offered for sale,  much of the material is brought to us by geologists, mineralogists and sometimes by the general public who have come across an interesting rock in their travels. The cutting and polishing on the correct plane allows the normally hidden minerals within to become easily visible.

We also take on small one off commissions, sometimes a mixture of polished minerals and cast tin. The candlesticks in the header picture are such a project, all materials were sourced from within a mile of our home in  Luxulyan   

Click on pictures to enlarge:

Stannite and Rashleighite. Bunny Mine.          Hensbarrow, Cornwall. 

A very rich but small cut and polished slice of stannite and turquoise var: rashleighite in a quartz matrix.

This stuff is a nightmare to polish and one of only a few that have not broken during cutting.

This one is stable, sits well and has been left natural on the reverse.

specimen size: 45 mm x 40 mm x 40 mm and about 13 mm thick.




Cassiterite. Wherry Mine, Black Lode.   

A large cut and polished on one face, slice of rich cassiterite in the typical " Black Lode" matrix collected during the severe storms of 2012.

Specimen size is 110 mm x 100 mm x 11 mm.

Price. £ 45.00, postage £ 4.65 UK.


Contact: info@midcornwallminerals.co.uk 

Cassiterite in Breccia. New Fowey Consols.     Lanlivery Cornwall.

A polished on both sides slice of explosive breccia collected from New Fowey Consols mine in Cornwall.

Rich areas of dark cassiterite in the central area of this specimen. Size is:95 mm x 85 mm x 14 mm

Price: £ 45.00. Postage UK £ 4.69.



Explosive Breccia. Wheal Remfrey.              Cornwall.

A large cut and polished on both sides specimen of explosive breccia from the wheal Remfrey clay pit in Cornwall

Specimen size is: 140 mm x 90 mm x 20 mm.


Price: £ 45.00. Postage UK £4.69.



Rashleighite in Quartz Vein.                             Gunheath Pit, Cornwall, 1980's.

A very rich polished on one face specimen of deep green rashleighite in the typical greyish quartz from Gunheath Pit. The quartz seam penetrates completely through the granite matrix which has been left natural on the reverse side.

A large piece at 125 mm x 45 mm x 42 mm.


Price: £ 55.00.  Sold but similar specimens are still available


Contact: info@midcornwallminerals.co.uk

Breccia. Hingston Down Quarry.                    Cornwall.

A typical breccia from Hingston Down Quarry that was worked through in the 1980,s.

The 70 mm wide pipe shows alteration on the granite contact and fine disseminated cassiterite thoughout the tourmaline and also in the central area of the breccia.

Price £ 40.00. Postage UK £ 4.69.


Contact: info@midcornwallminerals.co.uk 

Breccia. Fox Tor Girt. Dartmoor. Devon. 

 A geological breccia specimen from an old Plymouth collection.

This is a very unusual and rare specimen in as much as it shows micro breccias of feldspar and quartz in rectangular form rimmed with fine  tourmaline and micro cassiterite, these again have flowed in to another brecciated quartz.

The specimen is  polished on both face's and cut square on the base for display purposes.


Specimen size 120 mm x 115 x 20 mm.                                                                    

Price £ 40.00 Postage £4.69 UK. 


Contact: info@midcornwallminerals.co.uk

Luxullianite, Luxulyan, Cornwall.

A very large slab of luxullianite that has been polished on both sides. The material was sourced with permission from the site of Treffrys cutting yard near lanescot over twenty years ago. 

Size is approximately 200 mm x 160 mm x 18 mm and weighs well over 1 Kg.

Price £45.00 . Postage Uk £4.10 



Sold.       Lots of smaller polished slabs available





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Copyright. Peter Trebilcock