Mid Cornwall Minerals
 Mid Cornwall Minerals          

Cornish Mineral Sales

I have been field collecting  Cornish minerals for over forty years with several breaks while bringing up a growing family and starting my engineering business. It is not my aim to become a fully fledged mineral dealer as there are many other things in life to occupy my time as you will see on this site.


I have been lucky enough to acquire several very old collections over the years, some of the specimens from which are of no interest to me but are never the less of very high quality, some dating back to the 19th century.


Minerals Also Purchased.


The time has now come for me to specialise in one area of my  mineral collecting hobby with the focus on minerals from the Mid Cornwall and I will always purchase good quality  specimens from this area especially those from the clay country.



Chalcedony pseudomorphs after Octahedral Fluorite. Wheal Mary Ann.                                A superb Cornish Classic.

A large specimen of chalcedony  replacing octahedral fluorite, the largest crystal is 18 mm across, one of the best and cleanest examples that we came across while digging footway shaft at Wheal Mary Ann.

Specimen size is: 90 mm x 50 mm x 20 mm.

Price £ 75.00. Postage UK £ 4.00.


Reserved IB.


Contact: info@midcornwallminerals.co.uk


Rashleighite. Turquoise. Wolfram.          Bunny Mine Section of  Gunheath Pit. Cornwall.

A large cabinet specimen of Rashleighite and bright blue crystallised Turquoise with a  blade of black wolfram and minor varlamoffite.

A nice display specimen.


Specimen size: 80 mm x 60 mm x 60 mm.

Price: £ 50.00. Postage UK £ 4.00.





Cassiterite. Melbur Clay Pit. Cornwall.

Cassiterite in tourmaline. A hard polished on one side granite matrix shot through with numerous cassiterite in tourmaline stringers.

A large section at 125 mm x 95 mm x 40 mm.

Price: £ 30.00. Postage UK £4.00


Contact: info@midcornwallminerals.co.uk

Pseudomorphs. Quartz after Barite.              Gravel Hill Mine. Cornwall.

Quartz after Barite pseudomorphs.

A very clean and pretty Cornish classic.


Specimen size is: 75 mm x 40 mm x 35 mm.


Price: £40.00. Postage UK £ 4.00.






Cassiterite.  Geevor Mine. Cornwall.

Cassiterite in white quartz, collected from 16 Grenfell level N/E in February 1981.

Specimen size: 75 mm x 65 mm x 15 mm


Price: £40.00. Postage UK £4.00.


Contact:  info@midcornwallminerals.co.uk




Nickelskutterudite, Safflorite, Nickoline.           Great Dowgas Mine. Cornwall.

A small rare location specimen thats has been  cut and polished section showing nickelskutterudite, safflorite and nickeline.

Size 55 mm x 28 mm x 15 mm. 

Price £ 40.00.  Postage Uk £ 4.00.




Contact:    info@midcornwallminerals.co.uk


Torbernite. Wheal Basset. Cornwall.

Rich coating of small square torbernite/ meta torbernite crystals on three faces of this specimen.


Specimen size: 70 mm x 40 mm x 40 mm.


Price:£ 30.00. Postage to UK only £4.00.


Contact: info@midcornwallminerals.co.uk




 Cassiterite Crystals. Cligga Mine. Cornwall.

 Sharp crystals to about 7 mm in a hard vuggy white quartz matrix

Specimen size: 100 mm x 65 mm x 60 mm.

Some small crystals on the reverse side.


Price: £ 45.00. Postage Uk £4.00.


Contact: info@midcornwallminerals.co.uk



Rashleighite. Gunheath Pit. Cornwall.       Also advertised on my Slice of Cornwall page with more new slice's.

 A large, heavy and very special one off slab of crystalline rashleighite in a grey almost smoky quartz with small areas of stannite. The slab is polished on both sides and measures approximately 200 mm x 170 mm x 20 mm. The quartz seam is 80 mm wide piercing the typical Gunheath granite matrix.

Price £60.00. Postage UK  £ 7.00.

Contact: info@midcornwallminerals.co.uk


Super Iron Out / Iron Out. 

I am always asked what I use for cleaning iron stains from minerals and the safe answer is Iron Out or what used to be called Super Iron Out.

The fomula is identical and just an advertising decision by the manufacturers.

I can supply the 28oz bottles in the UK  for £20 plus postage of £3.00. Large stock available.

I use a weak solution 1 table spoon to 1 litre of water and buffer with sodium bicarbonate to bring the ph to about 7.

As always test on a waste piece first.


Contact: info@midcornwallminerals.co.uk

Cassiterite.  Relistien Mine. Gwinear.      Cornwall.  R Barstow. Green label.

Rich cassiterite in the typical conglomerate matrix of rounded fragments of slate cemented with quartz and chlorite, the cassiterite is in the 35 mm wide red chlorite and ironstone vein which runs through it.

Specimen size: 90 mm x 80 mm x 35 mm.


Richard Barstow. Green label


Price:£65.00. Postage UK £4.00


Contact: info@midcornwallminerals.co.uk



Cassiterite.var Wood Tin.                            Tobban Horse. Cornwall.  

Cassiterite var Wood Tin. A small but rich and very pretty specimen which I have cut and polished to reveal the stunning wood tin. Collected on an extremely low tide in 2017.

60 mm x 25 mm x 15 mm.

Price £35.00.Postage UK £ 4.00.




Blister Copper, Chalcopyrite. St Agnes.

Blister copper: St Agnes:

Comes with an old Adam Krantz  label of Bonn dating it to between 1850- 1872.

Specimen size is 58 mm x 40 mm x 27 mm.

Price: £ 120. Postage UK £4.00.





A lot of old label Cornwall specimens to add in the next few months.


Cassiterite. Wheal Unity. St Day.

A rich old time specimen of crystalline cassiterite in a chlorite and quartz matrix.

Specimen size is 45 mm x 36 mm x 26 mm.

Price £45.00. Postage Uk £ 4.00.

Contact: info@midcornwallminerals.co.uk



Ferberite, Ferritungstite, Scheelite.            Hingston Down Quarry. 

A rich specimen in a stable quartz gozzan matrix, SW UV light shows areas of scheelite, yellow ferritungstite in the vugs between the wolfram and ferberite.

Specimen size is 75 x 35 x 35 mm.

Price £ 35.00. Postage UK £4.00.

Contact: info@midcornwallminerals.co.uk

Scheelite showing as bright blue areas under a short wave UV light.


Cassiterite. Droskyn Lode. Perranporth  Cornwall.  

A cut and polished on one face, specimen collected from the water filled Droskyn Lode.

Fine beige to dark brown cassiterite in chlorite cementing the quartz breccia. Sharp micro crystals on the rear face

Size: 140 mm x 60 mm x 40 mm at it's thickest.

Price: £45.00 Postage Uk £ 4.00.                                                                                                      Contact:   info@midcornwallminerals.co.uk



Chalcopyrite. Fowey Consols.                    Tywardreath. Cornwall.   

A rich specimen of chalcopyrite in a quartz killas breccia, cut and polished on one face.Minor pyrite in a few places.

75 mm x 50 mm x 45 mm.

Price £ 25.00 Postage UK £ 4.00.

Contact: info@midcornwallminerals.co.uk



Cuprite, chalcedony, tile ore, native copper. Penlee Foreshore. Cornwall.

Cuprite, chalcedony, tile ore and native copper.

A very rare and unusual assemblage of minerals which under magnification shows small native copper within the dendritic copper oxides.

A cut and lightly polished slice115 mm x 45 mm x 5 mm

Price: £40.00. Postage UK £4.00.

Contact:  info@midcornwallminerals.co.uk



Bornite, Pyrite, Chalcocite.Geevor Mine.

A very rich specimen of lode material from 16 Coronation lode Geevor Mine that has been cut and highly polished on one side.

Bright cubic pyrite in the host matrix of bornite and chalcocite.

Specimen size:90 mm x 70 mm x 30 mm.

Price: £ 55.00. Postage UK £ 4.00.

Contact: info@midcornwallminerals.co.uk

Wavellite. Hingston Down Quarry.

Wavellite. Hingston Down Quarry.

Bright orange sprays of wavellite coating small quartz crystals in the vug of the hard granite matrix.

Specimen size is: 40 mm x 38 mm x 32 mm.

Price: £ 25.00 Postage UK £4.00.

Contact: info@midcornwallminerals.co.uk

Calcite. Geevor Mine. Cornwall.

Calcite. 16 Coronation Lode Geevor.

Bright crystals to approximately 12 mm.

From the collection of a mine geologist.

Specimen size is 60 mm x 35 mm x 35 mm.

Price:  £ 40:00.

Postage UK £4:00.

Contact:  info@midcornwallminerals.co.uk 


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Copyright. Peter Trebilcock