Mid Cornwall Minerals
Mid Cornwall Minerals                  

Tin Smelting from Cornish Cassiterite.

With help and encouragement  from a dedicated bunch of local Tin enthusiasts I decided to collect the black sands that are deposited in  our reservoir tank every year when  winter rains wash through the alluvial terrace above our property.

The sands are sorted, stamped, passed over a shaker table and eventually smelted when enough concentrate is available . All processing machinery has been built here in Cornwall in our engineering shop by myself, it's something I am quite proud of  and I occasionally sell the odd Cornish Tin ingot to help provide funds to put towards a hobby which can otherwise prove quite expensive .

The Great Seal of the Seneschal of the Duchy of Cornwall.

The Great Seal of the Seneschal of the Duchy of Cornwall for the Devon Stannaries.

This side reads:

'PRO STANNARUS IN COMITAT DEVON'

(For stannary in the County of Devon)

In use between 1604 and 1694.

 

The Great Seal of the Seneschal of the Duchy of Cornwall for the Devon Stannaries.

The reverse side reads:

'SIGILLUM SENESGALGIAE DVCATVS'

(Seal of the seneschal of the Duchy of Cornwall)

A view of my Californian type stamps hidden deep in the undergrowth, it runs with four 60 lb heads which have been in regular use for just over four years and work very well.The cassiterite from this area is extremely fine and is possibly one of the reasons that the old men left so much behind, technology not being available to recover such fine material. I use a 400 micron screen on the bowl of the stamps and the primary concentrate settles on the higher levels of the tray below before being taken to the shaker table.

Our home built shaker table works very efficiently with the very fine cassiterite collected from this area.This picture shows the dark band of cassiterite travelling along the top of the table to its collecting tray while the lighter gangue and waste products are washed over the bottom of the table .

Each ingot is individually hand cast and unique with the tin metal  being traced back to the source on our property.

 

A few of our finished tin ingots taken underground and photographed in a local cornish tin mine.

A Tin Smelting Project

Our home produced Tin Smelting DVD was originally produced to add interest to local historical groups that I regularly give mining talks too. It gives a cradle to the grave explanation of the way we work, the machinery I have manufactured to speed up the process, the smelting method used through to the individual casting of  the true Cornish tin ingots I produce. Much of the content shows methods that were traditionally used by the old men and passed on to me by the few that are still alive.

The DVD will work on all Windows platforms and most modern DVD players. 

 

 Cost of the DVD including post, packing and insurance to all of the UK :  £ 15:00

 

Contact:  info@midcornwallminerals.co.uk

Our small pocket ingots which weigh on average 60 grams are individually hand cast in traditional sand moulds and produced from the same Cornish Tin as our larger ingots, they are attached to a small explanatory card and make a superb unique and  affordable gift.

 

Cost of the ingot including post, package and insurance to a of UK: £20:00

 

Contact: info@midcornwallminerals.co.uk

 

 

 

A true Cornish ingot cast from Cassiterite  collected and smelted here on site in the Luxulyan Valley as part of my hobby.

They have been individually hand cast to my own pattern and measure approximately 340mm in length .

They are available for sale at a cost of £ 80:00 including postage and insurance to all UK mainland destinations.

I will accept paypal or cheque.

Overseas please ask for a postage quote.

Contact. info@midcornwallminerals.co.uk 

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Copyright. Peter Trebilcock