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.

 

Just in: A Hopes Nose Gold Micro Specimen from an old pre 1970,s micromount collection. See my micromount page.

 

Cassiterite. Wethered Shaft. Geevor.                    

A cut and polished on one side section collected from Wethered shaft at Geevor mine by the mine geologist.

The specimen  is 110 mm x 85 mm x 25 mm with an extremely rich 26 mm wide cassiterite seam  continuing right through the matrix. A rare one off specimen.

Sold: Best Offer Accepted

Contact:  info@midcornwallminerals.co.uk 

Native Bismuth- Bismuthenite.                  New Fowey Consols.    

A rare one off specimen of native bismuth with bismuthenite needles in the vugs of the quartz gozzan matrix.

Specimen size is 70 mm x 60 mm x 45 mm.

Price: £ 70.00. Postage UK £ 4.00.

 

Contact:  info@midcornwallminerals.co.uk

Cassiterite: var Wood Tin.                           Tobban Horse Outcrop. 

A recently cut and polished on one side, specimen of cassiterite of the variety known as wood tin in quartz. A very pretty specimen.

Size is: 75 mm x 75 mm x 12 mm at it's thickest point

and even more stunning with a little magnification.

Price: £ 40.00. Postage UK. £4.00.

 

Contact: info@midcornwallminerals.co.uk

 

Sold

Cornish Tin Ingot.

A full size 320 mm long  CornishTin ingot advertising the Bissoe Tin Smelting Works.

 

Price.£100. Postage UK £ 4.00.

 

Contact:info@midcornwallminerals.co.uk

 

Sold: Best offer accepted

 

 

 

Torbernite: Wheal Basset.

A granular quartz matrix with small bright                           meta/ torbernite crystals on three sides.

Specimen size: 70 mm x 35 mm x 35 mm.

Price: £ 35.00. Postage UK £4.00.

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. Wheal Speed, Carbis Bay.  Cornwall.

Cassiterite:  Wheal Speed, Carbis Bay, Cornwall.

A rich specimen: 70 mm x 70 mm x 40 mm.

Small crystals and a rich seam of cassiterite through the quartz covered matrix.

 

Price £ 40.00. Postage UK £ 4.00.

 

Contact: info@midcornwallminerals.co.uk

Cassiterite.  Relistien Mine. Gwinear.      Cornwall.  

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.

 

Price:£55.00. 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.

 

 

Contact:info@midcornwallminerals.co.uk

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.

Contactinfo@midcornwallminerals.co.uk

 

 

 

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

 

 

A very large plate of cassiterite crystals in quartz and topaz  on a hard granite matrix.

Specimen size is: 120 mm x 80 mm x 30 mm.

Price £ 55.00. Postage UK £4.00.

Contact: info@midcornwallminerals.co.uk 

 

 

Cassiterite. Cligga Mine. Cornwall.

Biotite Mica.                                          Trelavour Downs,Cornwall.

A colourful specimen of Biotite mica from Trelavour Downs.

Specimen size is: 80 mm x 60 mm x 20 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

Chalcedony pseudomorphs after octahedral fluorite.                              Wheal Mary Ann. Cornwwall.

Chalcedony pseudomorphs after octahedral fluorite.

A specimen that sits well and  has faces to 10 mm across.

Specimen size is: 75 mm x 60 mm x 45 mm.

Ex. Richards collection. Gunnislake.  

 

Price  £35.00. Postage Uk £4.00.

 

Contact:  info@midcornwallminerals.co.uk 

Fluorite. Hingston Down Quarry. 

Fluorite and quartz. Hingston Down Quarry.

Small purple fluorite crystals to about 4 mm sitting among small iron stained quartz crystals on the granite matrix. 80 mm x 40 mm x 40 mm.

Very pretty under magnification.

Price. £30.00 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