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James Catmur
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Joined: 14 Sep 2006
Posts: 1349
Location: Cambridge
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Posted: Jun 07, 2013 04:47 Post subject: A mineralogical trip through the regions of the UK - England / County Durham |
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So we can expect to see fluorite and some other interesting minerals from this county. A few things are on my 'wish to see' list.
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Fluorite, Galena Heights Quarry, Westgate, Weardale, North Pennines, Co. Durham, England, UK 10cm x 10xm |
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42806 Time(s) |
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Fluorite, Quartz Boltsburn Mine, Rookhope District, Weardale, North Pennines, Co. Durham, England, UK 11cm x 6cm |
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42869 Time(s) |
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Ru Smith
Joined: 13 Oct 2012
Posts: 362
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Posted: Jun 08, 2013 13:30 Post subject: Re: A mineralogical trip through the regions of the UK - England / County Durham |
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Weardale calcite
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Calcite. Cambokeels, Weardale, Co Durham, England, UK. 14 cm specimen with lustrous crystals to 35 mm. |
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42814 Time(s) |
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Ru Smith
Joined: 13 Oct 2012
Posts: 362
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Posted: Jun 08, 2013 13:46 Post subject: Re: A mineralogical trip through the regions of the UK - England / County Durham |
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This is pretty.
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Fluorite. Heights Mine, Weardale, Co Durham, England, UK 5 cm |
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42867 Time(s) |
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Ru Smith
Joined: 13 Oct 2012
Posts: 362
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Posted: Jul 27, 2013 23:43 Post subject: Re: A mineralogical trip through the regions of the UK - England / County Durham |
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A fine fluorite penetration twin from Blackdene, ex Arthur Scoble.
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Fluorite twin. Blackdene Mine, Ireshopeburn, Weardale, North Pennines, Co. Durham, England, UK. 25 mm. |
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Fluorite twin. Blackdene Mine, Ireshopeburn, Weardale, North Pennines, Co. Durham, England, UK. 25 mm. |
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Ru Smith
Joined: 13 Oct 2012
Posts: 362
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Posted: Aug 10, 2013 08:49 Post subject: Re: A mineralogical trip through the regions of the UK - England / County Durham |
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A fluorite from Killhope and a photo of the Park Level portal. "For 40 years all the ore came out of the mine through this entrance and all the pit props, stones for arching, rails and explosives went in this way."
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Fluorite. Middlegrove Vein, Killhope, Weardale, Co Durham, England, UK. 85 mm specimen with crystals to 6 mm. |
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Park Level portal, Killhope Mine. |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4112
Location: Germany
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Posted: Aug 11, 2013 05:07 Post subject: Re: A mineralogical trip through the regions of the UK - England / County Durham |
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West Pasture Mine:
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Fluorite, quartz West Pasture Mine, Stanhope, Weardale, North Pennines, Co. Durham, England, UK Specimen size 9,5 cm |
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42331 Time(s) |
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Jesse Fisher
Joined: 18 Mar 2009
Posts: 629
Location: San Francisco
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Posted: Sep 20, 2013 11:46 Post subject: Re: A mineralogical trip through the regions of the UK - England / County Durham |
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A large, gemmy, wine-purple penetration twin fluorite, for which the Boltsburn Mine is famous. The flats that produced these crystals were found by miners around 1894 and worked until the mine closed in 1931. This specimen was part of a collection assembled by an unknown person at the Darlington Library (County Durham) during the 1920s. It is likely that the collection was never on display and was boxed and subsequently forgotten. The collection, which contained numerous fluorites from the Boltsburn, as well as other Weardale and West Cumbrian mines, was discoverd in the early 1990s and sold on.
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Fluorite with Siderite Boltsburn Mine, Rookhope, Weardale 7 cm across |
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42147 Time(s) |
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Jesse Fisher
Joined: 18 Mar 2009
Posts: 629
Location: San Francisco
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Posted: Sep 25, 2013 12:25 Post subject: Re: A mineralogical trip through the regions of the UK - England / County Durham |
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Galena with Siderite from the Boltsburn Mine.
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Galena with Siderite Boltsburn Mine, Rookhope, Weardale, Co. Durham 10x5x4 cm overall size |
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42005 Time(s) |
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ian jones
Joined: 29 Jul 2009
Posts: 112
Location: london
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Posted: Sep 30, 2013 10:43 Post subject: Re: A mineralogical trip through the regions of the UK - England / County Durham |
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A very unusual fluorite crystal with a band of quartz running diagonally across the crystal and covered with small galena crystals, typically 2-3mm. Also minor pyrite.
Repatriated from Tucson in 2011.
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Fluorite Frazer's Hush Mine, Rookhope Valley, County Durham, England, UK 47x35mm |
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41959 Time(s) |
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ian jones
Joined: 29 Jul 2009
Posts: 112
Location: london
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Posted: Sep 30, 2013 15:29 Post subject: Re: A mineralogical trip through the regions of the UK - England / County Durham |
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A Boltsburn fluorite showing nice sharp zoning
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Fluorite Boltsburn Mine, Rookhope Valley, Co Durham, England, UK 50mm 50mm |
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41887 Time(s) |
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James Catmur
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Joined: 14 Sep 2006
Posts: 1349
Location: Cambridge
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ian jones
Joined: 29 Jul 2009
Posts: 112
Location: london
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Posted: Oct 01, 2013 09:41 Post subject: Re: A mineralogical trip through the regions of the UK - England / County Durham |
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I often wonder how things form myself James. Some just seem bizarre. In the case above, why the selective band of quartz and then why the selective galena on the quartz. Anyway, beats me.
Another Boltsburn fluorite, main crystal 45x45mm, with calcite crystals on one face.
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Fluorite Boltsburn Mine, Rookhope Valley, County Durham, England, UK |
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41783 Time(s) |
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Tobi
Site Admin
Joined: 07 Apr 2009
Posts: 4112
Location: Germany
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Posted: Oct 01, 2013 12:15 Post subject: Re: A mineralogical trip through the regions of the UK - England / County Durham |
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What a great galena specimen, Jesse!!! ( https://www.mineral-forum.com/message-board/files/g020_r_105.jpg )
Here's another fluorite classic from Weardale:
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Fluorite Heights Mine, Westgate, Weardale, North Pennines, Co. Durham, England, UK Specimen size 6,5 cm |
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41693 Time(s) |
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Jesse Fisher
Joined: 18 Mar 2009
Posts: 629
Location: San Francisco
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Posted: Oct 01, 2013 12:41 Post subject: Re: A mineralogical trip through the regions of the UK - England / County Durham |
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The Frazer's Hush Mine was located at the upper end of Rookhopeburn, a couple kilometers west of the Boltsburn, and not far from Allenheads in Northumberland. The mine was a modern one, having been worked from the 1970s until 1999. In the late 1980s a series of cavities were encountered on the Greencleugh vein that produced some of the best purple fluorites found from the region in recent years. The mine site has since been reclaimed and very little remains to be seen.
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fluorite with sphalerite Frazer's Hush Mine, Rookhopeburn, Weardale, Co. Durham main crystal is 2.5 cm on edge |
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41689 Time(s) |
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ian jones
Joined: 29 Jul 2009
Posts: 112
Location: london
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Posted: Oct 05, 2013 13:54 Post subject: Re: A mineralogical trip through the regions of the UK - England / County Durham |
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Middlehope Shield Mine was a major Weardale lead-producer during the first half of the 19th century, a documented find of green fluorite occurred here in 1818.
Very distinctive specimens from this occurrence can occasionally still be found, but the locality is not widely known and specimens are usually labelled as coming from the much-better known source of Weardale green fluorite, Heights Mine (including this one!), which did not work this early.
Heights, now long closed, is now obviously starting to disappear from mineral dealer's memories, I found one Middlehope piece at this year's Ste Marie show labelled Rogerley Mine, which currently produces a lot of green fluorite for the collector market. It does make you wonder what percentage of unlocated specimens are incorrectly attributed by overenthusiastic dealers with only a cursory knowledge of an area .
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Fluorite Middlehope Shield Mine, Westgate, County Durham, England, UK Typical Middlehope piece, largest crystal 25mm |
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41539 Time(s) |
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Jesse Fisher
Joined: 18 Mar 2009
Posts: 629
Location: San Francisco
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Posted: Oct 05, 2013 15:23 Post subject: Re: A mineralogical trip through the regions of the UK - England / County Durham |
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Another fluorite specimen, most likely from the 1818 find at White's Level, Middlehopeburn. As with most green fluorite from Weardale mines, the color of these is somewhat unstable and many of the White's Level specimens have faded a bit over time. This one came with a label giving the location as "Heights Meadow." I've never found reference to a location of that exact name.
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Fluorite White's Level, Middlehopeburn, Weardale, County Durham, England, UK 7 cm across |
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The portal to White's Level as seen in June 2003. |
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Leon Hupperichs
Joined: 23 Oct 2013
Posts: 15
Location: Netherlands
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Posted: Oct 23, 2013 17:32 Post subject: Re: A mineralogical trip through the regions of the UK - England / County Durham |
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Weardale fluorite.
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Fluorite Blue Circle Cement Quarry, Eastgate, Weardale, Co.Durham, England, UK Field of view 5 cm
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41241 Time(s) |
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Leon Hupperichs
Joined: 23 Oct 2013
Posts: 15
Location: Netherlands
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Posted: Oct 23, 2013 17:35 Post subject: Re: A mineralogical trip through the regions of the UK - England / County Durham |
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Heights Quarry fluorite
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Fluorite Heights Quarry, Westgate, Weardale, Co.Durham, England, UK. 10 x 9 cm
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41222 Time(s) |
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Leon Hupperichs
Joined: 23 Oct 2013
Posts: 15
Location: Netherlands
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Posted: Oct 24, 2013 14:27 Post subject: Re: A mineralogical trip through the regions of the UK - England / County Durham |
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Fluorite.
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Fluorite Frazer's Hush Mine, Rookhope District, Weardale, North Pennines, Co. Durham, England, UK Field of view 7 cm
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41208 Time(s) |
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Leon Hupperichs
Joined: 23 Oct 2013
Posts: 15
Location: Netherlands
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Posted: Oct 24, 2013 14:29 Post subject: Re: A mineralogical trip through the regions of the UK - England / County Durham |
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Fluorite from the Blue Circle Cement Quarry.
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Fluorite Blue Circle Cement Quarry, Eastgate, Weardale, Co.Durham, England, UK Field of view 4 cm
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41172 Time(s) |
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