| View previous topic :: View next topic |
| Author |
Message |
ian jones
Joined: 29 Jul 2009
Posts: 112
Location: london
|
 Posted: Jul 25, 2013 02:57 Post subject: Re: A mineralogical trip through the regions of the UK - England / Cornwall |
|
|
A much travelled cassiterite
| Description: |
Cassiterite
Great Work Mine, Breage, Cornwall, England, UK.
largest crystal 6mm.
This Cornish cassiterite was once in the Freiberg mining Academy in Saxony, Germany (its label dates it there to between 1880-1905). From Freiberg it made its way to Chile's national Museum, the Museo de Santiago.
Rescued by Skip Szenics in the late 1900s, he brought it back to New York in the USA. In 2002, he brought it down to Tucson, from whence I repatriated it back to the UK.
This is a well-travelled tin!
Located only as Cornwall on the Freiberg label, this specimen has been compared to others in the Natural History Museum Collection in London. Its matrix and composition matches those in the Russell Collection from Great Work Mine in Breage. |
|
| Viewed: |
38126 Time(s) |
|
| Description: |
| Freiberg Mining Academy label, its style dates it to between 1880-1905 |
|
| Viewed: |
38099 Time(s) |
|
|
|
| Back to top |
|
 |
Ru Smith
Joined: 13 Oct 2012
Posts: 362
|
| Posted: Jul 26, 2013 13:51 Post subject: Re: A mineralogical trip through the regions of the UK - England / Cornwall |
|
|
£1 10s in 1864 money seems like a healthy price for that chalcotrichite. Using one of the online calculators to convert to 2013 money I got:
£115.00 using the retail price index
£891.00 using average earnings
|
|
| Back to top |
|
|
Ru Smith
Joined: 13 Oct 2012
Posts: 362
|
| Posted: Jul 26, 2013 14:39 Post subject: Re: A mineralogical trip through the regions of the UK - England / Cornwall |
|
|
An imposing old specimen from Wheal Jane.
| Description: |
Sphalerite (Fe-rich) with pyrite and quartz.
600' level, Wheal Jane, Cornwall, England, UK.
23 cm. |
|
| Viewed: |
38017 Time(s) |
|
|
|
| Back to top |
|
|
ian jones
Joined: 29 Jul 2009
Posts: 112
Location: london
|
| Posted: Jul 30, 2013 02:57 Post subject: Re: A mineralogical trip through the regions of the UK - England / Cornwall |
|
|
A classic from Wh Hope
| Description: |
Galena
Wheal Hope, Hendra Croft, Perranzabuloe, Cornwall, England, UK
Galena pseudomorphing pyromorphite, typical crystal size 5mm. Ex Arthur Scoble collection. |
|
| Viewed: |
37991 Time(s) |
|
|
|
| Back to top |
|
|
Roger Warin
Joined: 23 Jan 2013
Posts: 1232
|
| Posted: Jul 30, 2013 04:33 Post subject: Re: A mineralogical trip through the regions of the UK - England / Cornwall |
|
|
Very interesting and original specimen of pseudo galena.
Roger.
|
|
| Back to top |
|
|
ian jones
Joined: 29 Jul 2009
Posts: 112
Location: london
|
| Posted: Jul 31, 2013 02:53 Post subject: Re: A mineralogical trip through the regions of the UK - England / Cornwall |
|
|
A Cornish silver, not a thing of beauty, but a rare mineral from Cornwall
| Description: |
Silver
Wheal Ludcott, St. Ive, Liskeard, Cornwall, England, UK
Coarse wire silver, maximum wire length 10mm, with crude calcite crystals. |
|
| Viewed: |
37909 Time(s) |
|
|
|
| Back to top |
|
|
ian jones
Joined: 29 Jul 2009
Posts: 112
Location: london
|
| Posted: Aug 20, 2013 12:21 Post subject: Re: A mineralogical trip through the regions of the UK - England / Cornwall |
|
|
Bournonite from the original but much less well-known locality of Wheal Boys in the parish of St Endellion in Cornwall where it was associated with jamesonite, sphalerite and siderite.
First mentioned by Philip Rashleigh in 1797, it was more fully described by French crystallographer and mineralogist Jacques Louis, Comte de Bournon in 1804, after whom it was subsequently named. However, the name given by Bournon himself in 1813 was endellionite, after St Endellion, the original location.
| Description: |
Bournonite
Wheal Boys, Port Isaac, St. Endellion, Cornwall, England, UK
Intergrown bournonite crystals to 4mm, with small crystals of sphalerite. Sphalerite and jamesonite crystals on rear |
|
| Viewed: |
37817 Time(s) |
|
| Description: |
|
| Viewed: |
37737 Time(s) |
|
|
|
| Back to top |
|
|
Jesse Fisher
Joined: 18 Mar 2009
Posts: 639
Location: San Francisco
|
| Posted: Sep 20, 2013 11:21 Post subject: Re: A mineralogical trip through the regions of the UK - England / Cornwall |
|
|
Fluorite on Quartz from the East Pool Mine, Redruth. Specimen is ex American Museum of Natural History and ex Charles Bement collections.
| Description: |
Fluorite on Quartz
East Pool Mine, Redruth, Cornwall
6x4x3 cm |
|
| Viewed: |
37640 Time(s) |
|
|
|
| Back to top |
|
|
Ru Smith
Joined: 13 Oct 2012
Posts: 362
|
| Posted: Sep 28, 2013 18:21 Post subject: Re: A mineralogical trip through the regions of the UK - England / Cornwall |
|
|
Fine old tetrahedrite.
| Description: |
Tetrahedrite, chalcopyrite-coated with galena on quartz.
Herodsfoot Mine, Lanreath, Cornwall, England, UK.
5 cm specimen, tetrahedrite crystals to 2 cm on edge. |
|
| Viewed: |
37531 Time(s) |
|
|
|
| Back to top |
|
|
ian jones
Joined: 29 Jul 2009
Posts: 112
Location: london
|
| Posted: Sep 30, 2013 11:44 Post subject: Re: A mineralogical trip through the regions of the UK - England / Cornwall |
|
|
Whilst Whs Gorland and Unity are best known for their superb and rare arsenates and phosphates, they also produced many other fine minerals. One, never common and much sought after by collectors of Cornish minerals, is mimetite.
| Description: |
Mimetite
Wheal Unity, St Day, Cornwall, England, UK
crystals to 20mm, on quartz |
|
| Viewed: |
37359 Time(s) |
|
|
|
| Back to top |
|
|
ian jones
Joined: 29 Jul 2009
Posts: 112
Location: london
|
| Posted: Sep 30, 2013 12:43 Post subject: Re: A mineralogical trip through the regions of the UK - England / Cornwall |
|
|
Cornwall, famous for its tin and copper. Here are a couple of copper specimens from (very probably) perhaps it's most well-known mine - Botallack - "the mine under the sea" - from about c1804.
| Description: |
Copper
Botallack Mine, St Just, Cornwall,England, UK
3x2"
Ex Col Williams - Burncoose Assay Office Collection. Williams collection number 112. Although attributed to "probably Wh Basset" by Williams, the specimen came from the Bolitho collection (the Bolithos were a well known Penzance mining family and operated the largest tin smelting house in Cornwall during the 19th century and until 1912), so the specimen is much more likely to be from one of the St. Just mines.
Specifically, the specimen is like other wire coppers from Botallack Mine and thus possibly dates to c1804 when other specimens of this type were collected. |
|
| Viewed: |
37565 Time(s) |
|
| Description: |
| Another, but much coarser, wire copper from Botallack 3x2". |
|
| Viewed: |
37598 Time(s) |
|
|
|
| Back to top |
|
|
ian jones
Joined: 29 Jul 2009
Posts: 112
Location: london
|
| Posted: Sep 30, 2013 15:17 Post subject: Re: A mineralogical trip through the regions of the UK - England / Cornwall |
|
|
A classic St Agnes fluorite - a "four-faced cube" - more correctly a tetrahexahedral crystal, but that doesn't sound as good! This habit was typical of Trevaunance and the neighbouring St Agnes mines. Ex University of Pennsylvania Collection.
| Description: |
Fluorite
Trevaunance mine, St Agnes, Cornwall, England, UK
Crystals to 7mm |
|
| Viewed: |
37552 Time(s) |
|
|
|
| Back to top |
|
|
ian jones
Joined: 29 Jul 2009
Posts: 112
Location: london
|
| Posted: Oct 03, 2013 11:21 Post subject: Re: A mineralogical trip through the regions of the UK - England / Cornwall |
|
|
A couple of pieces from Herodsfoot, one of the great specimen-producing mines of Cornwall. Its certainly one of my favourites!
| Description: |
Herodsfoot Mine, Lanreath, Cornwall, England, UK
10mm tetrahedrite crystals coated with iridescent chalcopyrite, with associated galena and quartz. |
|
| Viewed: |
37394 Time(s) |
|
| Description: |
| Bournonite cogwheel 30mm across, on quartz. This is part of a larger specimen, and is the largest crystal. |
|
| Viewed: |
37384 Time(s) |
|
|
|
| Back to top |
|
|
Ru Smith
Joined: 13 Oct 2012
Posts: 362
|
| Posted: Oct 03, 2013 21:23 Post subject: Re: A mineralogical trip through the regions of the UK - England / Cornwall |
|
|
| Fine examples, Ian.
|
|
| Back to top |
|
|
ian jones
Joined: 29 Jul 2009
Posts: 112
Location: london
|
| Posted: Oct 13, 2013 08:01 Post subject: Re: A mineralogical trip through the regions of the UK - England / Cornwall |
|
|
A number of locations in Cornwall have produced nice apatites. This is one from the classic but long-abandoned and now heavily-overgrown location of Colcerrow Quarry.
| Description: |
Apatite
Colcerrow Quarry, Lanlivey, Cornwall, England, UK
Crystal 13mm |
|
| Viewed: |
37092 Time(s) |
|
|
|
| Back to top |
|
|
|
FAQ 
Register
Log in
Forgotten your password?
