Mid Cornwall Minerals
 Mid Cornwall Minerals          

Cornish and British Minerals

I have been field collecting  Cornish minerals for over fifty 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.



Chalcosiderite. Gunheath Pit. 1980's

A superb specimen with undamaged chalcosiderite   spheres on the top face of the quartz gozzan matrix and in numerous vugs throughout.

Specimen size : 70 mm x 40 mm x 38 mm.


£70.00. Including free tracked postage


Sold: Best offer accepted


Contact: info@midcornwallminerals.co.uk

Cobaltite-Smaltite. Botallack. Cornwall.

An old 19th century specimen with the label showing it as cobaltite and smaltite which was an old time analyses and now classed as a skutterudite series.

A small 55 mm x 50mm x 28 mm specimen that comes with three old labels.

Price £ 120.00 including free tracked postage to all UK.

Sold.Best offer accepted

Contact.  info@midcornwallminerals.co.uk 

Goethite. Prismatic crystals.                                Restormel Royal Iron Mine.    

A  large heavy old time specimen of  white sugary quartz covered in  small bright prismatic crystals of goethite.

The specimen measures 90 mm x 60 mm x 48 mm

and comes with and old Arnold Fisher Label No 5380.

Much brighter than my photo shows.


£ 39.50.  Free tracked  postage  to UK  mainland 


Contact: info@midcornwallminerals.co.uk


Childrenite. Crinnis Cliff. Cornwall.

A  fresh  specimen of bright sharp childrenite crystals sitting on transparent quartz crystals in a vug of the killas matrix

Stunning under a lens.

Specimen size is: 65 mm x 50 mm x 40 mm.


Price. £ 35.00. Postage UK £ 4.20.


Contact: info@midcornwallminerals.co.uk

Cassiterite Crystals.                                    Wheal Prosper. Lanivet. Cornwall.

A small specimen with  perfectly formed  bright crystals on a buff colour killas matrix.

Specimen size is 45 mm x 30 mm x 20 mm.

Comes in a plastic perky box with it's old collectors label.


Price £ 29.50 Free tracked postage to Uk mainland.




Contact: info@midcornwallminerals.co.uk

Cuprite. Wheal Gorland. St Day.

A bright specimen with several vugs of small sharp red cuprite crystals.  

Size:48 mm x 45 mm x 28 mm.


Price. £65.00. Postage UK £4.50


Contact: info@midcornwallminerals.co.uk



Wood Tin, Bismuthenite, Chalcopyrite.            Polished slice. New Fowey Consols.                  Lanlivery Cornwall.            

A polished slice from the 2020 find, rich wood/toads eye tin with bright areas of bismuthenite and chalcopyrite in a white quartz matrix.

Specimen size 80 mm x 50 mm x 10 mm.

Price: £30.00. Postage UK £ 4.20.

Contact: info@midcornwallminerals.co.uk



Chalcedony, Trevaskis ,Cornwall.

A stunning cut and polished on one face specimen of chalcedony from Trevaskis, the natural back of the specimen shows small spots of cassiterite.

Specimen sizer :97 mm x 75 mm x 25 mm at its thickest point.

Price £ 65.00. Postage UK £4.50.


Contact: info@midcornwallminerals.co.uk

Arthurite. Hingston Down Quarry. Cornwall.   

A hand size specimen showing fresh apple green arthurite on the quartz face of a hard granite matrix. Sits and displays well.

95 mm x 70 mm x 50 mm

Price: £45.00. Postage Uk £4.50.


Contact: info@midcornwallminerals.co.uk

 Millclose Lead Ingot. Derbyshire.

A small commemerative lead ingot that was produced in the 1980's on the site of the Millclose smelter to mark the  50th anniversary of the drowning of the mine in the 1930's.

Complete with it's printed document. 

75 mm x 20 mm x 10 mm.


Contact:  info@midcornwallminerals.co.uk


Reserved AH

 Cassiterite crystals. Great Wheal Busy. Cornwall.     

A  rich specimen of cassiterite in a brecciated quartz tourmaline matrix with small sharp cassiterite crystals in the quartz vug. Stands and displays well.

Specimen size 95 mm x 72 mm x 40 mm.




Contact:     info@midcornwallminerals.co.uk 


Bornite Pyrite. 16 Coronation Lode.      Geevor Mine.  Cornwall.

A  rich and heavy specimen of bornite and pyrite collected on the 18th July 1985 from 16 Coronation Lode at Geevor mine.

Specimen size is 60 mm x 60 mm x 28 mm. It still has its dated and painted on life saver label on the reverse.

Price. £35.00. Postage UK £4.50.


Contact: info@midcornwallminerals.co.uk

Goethite var Wood Iron.                                      Restormel Royal Iron Mine.

A superb small specimen showing both radiating and botryoidal forms of goethite in the typical white quartz matrix.

Specimen size:60 mm x 40 mm x 30 mm


Price: £35.00. Postage UK £ 4.50.


Contact: info@midcornwallminerals.co.uk


Smoky quartz and specular hematite.                Old German label states Cumberland     

A large smoky quartz crystal with bright specular hematite on the base, it comes with it's old German label showing it as quarz m hamatit Cumberland.

45 mm at its widest point and stands 45 mm high. 


Price £ 25.00. Postage UK £4.50.



Cassiterite. Pendarves Mine. Cornwall.

An almost solid specimen of rich black cassiterite with a light dusting of chlorite, very heavy.

Specimen size: 70 mm x 40 mm x 25 mm.


Contact: info@midcornwallminerals.co.uk

Wavellite, Highdown Quarry. Devon.

A very large section of matrix with wavellite crystals to 18 mm in diameter. The specimen has been cut to allow it to stand and display well, a heavy piece  which measures 100 mm high, 80 mm wide and 70 mm deep. From an old 1960's Devon collection.

Price £ 45.00. Postage UK £ 4.50.





Botryoidal Hematite. Restormel Royal Iron Mine. Lostwithiel. Cornwall.                       Pictures to follow :   

Rashleighite- Turquoise. Gunheath Pit.

Cassiterite. New Fowey Consols Cornwall

A  large cut and polished on both sides slice from this little known mine which is a mile north of it famous neighbour Fowey Consols.

A  rare one off  specimen of very rich cassiterite in a pink feldspar  brecciated granite, the numerous vugs contain sparkling small sparable cassiterite crystals.

Specimen size: 130 mm x 85 mm x 10 mm.


Price £60.00 postage UK £4.20. Worldwide POA. 


Contact; info@midcornwallminerals.co.uk 



A small but rare specimen with a couple of labels, one showing it to be a 19th century specimen.

Size approximately. 60mm x 40 mm x 30 mm.

Bright botryoidal areas of goethite on a goethite and hematite matrix.

Price £ 35.00.Postage UK £4.20. Worldwide POA.


Contact: info@midcornwallminerals.co.uk




 Cassiterite. No 007  var:  wood / toads eye tin. New Fowey Consols. Lanlivery. 

An exceptional specimen or wood/toads eye tin in a white quartz matrix, one of the best we have ever collected from the material on our site.  Rich areas throughout the matrix to over 25 mm wide with small bright areas of native bismuth and chalcopyrite. 

Stunning under a lens.

Specimen size: 60 mm x 50 mm x 45 mm


Price £ 65.00. Postage UK £4.20.



Goethite, Limonite, Polished Slice.                  Restormel Royal Iron Mine.

A polished on one side slice of Goethite, Limonite and Hematite in a quart matrix, a colourful display specimen.

Specimen size:125 mm x 100 mm x 10 mm.


Price: £ 30.00. Postage UK £ 4.20.

Goethite.var. Wood iron.                                       Bosorne and Bollowal  Mine. St Just.

An old time specimen of hard quartz with a 12 mm seam of Goethite through the centre forming the variety wood iron on this face.  

Specimen size: 90 mm x  70 mm x 30 mm at its thickest.


Price £ 35.00. Postage UK £ 4.20. Worldwide POA 


Contact: info@midcornwallminerals.co.uk

Pyromorphite. Wheal Mary Ann.

Pyromorphite on a matrix of quartz and baryte with a dusting of black manganese oxide. Green to yellow pyromorphite crystals in numerous vugs, collected about 10 years ago while digging out the "Wulfenite Tunnel".

Specimen size is: 105 mm x 70 mm x 40 mm.

Price £35.00. Postage UK £ 4.20.




Quartz, Hematite and Calcite.                             Levant Mine. Cornwall. 

A  hand size quartz cluster with a hematite coating.  Specimen size: 95 mm x 50 mm x 50.

The largest quartz crystal is about 35 mm with bright undamaged paper calcite on them. 

Price £ 45.00. Postage 4.20 UK.



Pyromorphite: Bay Vein. Wanlockhead.

A specimen of bright green pyromorphite on a gozzany quartz matrix from the Bay Vein Wanlockhead.

Specimen size: 80 mm x 40 mm x 35 mm.


Price.£ 30.00. Postage UK £ 4.20.



Clinoclase, Olivenite, Malachite.                          Wheal Gorland.

A small but stunning old time specimen from the Wheal Gorland Mine, collected by  Bill Herring with Dave Smith in the 1970's before the tips were removed.

Specimen size is 40 x 35 x 25 mm.


Price: £58.00. Postage Uk 4.20.


Sold CC


Contact: info@midcornwallminerals.co.uk  


Linarite and Malachite.                                        Cannington Park, Somerset.

A pretty and rich specimen showing sharp crystals in the vugs, and a linarite coating on the base superb under magnification.

Specimen size is: 50 mm x 40 mm x 30 mm.


Price £ 40.00. Postage UK £4.20.



Polianite and Pyrolusite.                                      Fullabrook Mine. Braunton.       

 An unusual specimen from the Fullabrook Mine with a vug about 25mm wide showing bright undamaged crystals.


Price.£40.00.Postage  Uk £ 4.20.




Sphalerite, Galena, Baryte.                                  Pennerly Mine, Shropshire.

An unusual location specimen of Baryte, Sphalerite and minor galena from the Pennerly mine, collected in 2003 before most of the site was flattened and removed for hardcore.

Specimen size: 70 mm x 50 mm x 25mm.


Price £ 20.00. Postage UK £4.20






Chalcedony. Penlee Quarry. Cornwall.

Cassiterite. Simms Lode, Geevor Mine

A rich specimen showing black micro crystals in a hematite matrix.

65 mm x 50 mm x 35 mm.

Ex Alan Dean collection and comes with his label and one other.

Price. £25.00. Postage £4.20 UK.


Contact: info@midcornwallminerals.co.uk


 Cassiterite crystals. Great Wheal Busy Cornwall.  

Cassiterite crystals to 3mm in a quartz tourmaline matrix 

Specimen size: 55 mm x 50 mm x 35 mm.


Price £ 35.00 Postage UK £ 4.20 tracked.






Cassiterite in massive topaz.                       North Goonbarrow. SE area.                                

An unusual and rare specimen of very rich cassiterite in massive topaz. It has been sliced and polished on one face.

The reverse shows a crystal vug and it is heavy for  size.


Specimen size is 80 mm x 85  mm x 8 mm at it's thickest.

Price: £ 45.00. Postage UK only £ 4.20.

Contact: info@midcornwallminerals.co.uk 


Childrenite crystals.                                   George and Charlotte Mine. Devon 

 Sharp honey coloured crystals in the vug and along the front edge of the killas matrix.


Specimen size is: 80 mm x 45 mm 30 mm.


Price £ 35.00. Postage UK £ 4.20. Tracked.


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 £ 4.20.






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 £4.20.


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 £4.20.


Contact: info@midcornwallminerals.co.uk




Super Iron Out / Iron Out.                                    Now back in stock . Limited supply.           

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.

Unfortunately due to the huge increases in courier and customs prices I have had to increase my price so this may be the last batch that I import.

I can supply the 28oz bottles in the UK  for £28.00 including delivery.

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.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 £ 4.20.




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 £4.20.





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 £ 4.20.

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 £4.20.

Contact: info@midcornwallminerals.co.uk

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


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Copyright. Peter Trebilcock