PayPal-Standard-Logo
Home Subscribe Advertise About Us Contact Us downloads Links

Click here to show front cover.

Click on a title below to view the abstract

TWENTY YEARS IN MINERALS:
NORTHERN ENGLAND

Foreword
West Cumbria
Lake District
Caldbeck Fells
North Pennines

David Green • Peter Briscoe

THE SHAP GRANITE QUARRY,
CUMBRIA

Max Wirth • David Green

Front Cover of UKJMM No. 22.  Superb twinned yellow fluorite crystal 15mm on edge from Hilton Mine, Scordale, Cumbria. Peter Briscoe collection. Photo: David Green.
60 pages, full colour.

UKJMM No. 22
Shipping:

TWENTY YEARS IN MINERALS:
THE CLASSIC AREAS OF NORTHERN ENGLAND

David I. Green
Peter J. Briscoe

Mineral collecting in Northern England has a long and distinguished history. The mining districts of Cumbria, Northumberland and Durham include a remarkably large number of localities that are famous for fine specimens. Minerals from these locations are found in most of the world’s great collections. Although many of these specimens are ‘old-timers’, procured for the cabinets of well-to-do Victorians in the heyday of mining, the last two decades has substantially added to the number of discoveries and to our understanding of the mineralogy of the area.

Foreword

Connoisseurs of mineral specimens commonly single out three mining districts in Northern England for special praise. The iron mines of West Cumbria have produced specimens of calcite and barite that set the standard by which the species are judged worldwide. The Caldbeck Fells, which form the northernmost outpost of the Lake District, are famous for beautifully coloured lead, copper and zinc secondary minerals. The North Pennine Orefield, which includes the mines of Alston Moor and Weardale, is renowned for its beautiful fluorite and has produced some of the world’s finest examples of the barium minerals witherite, barytocalcite and alstonite.

The mines of Northern England have been famous for mineral specimens for more than two centuries, and the last twenty years has added a substantial number of new discoveries to an already impressive list. The geology and economic mineralisation of the region has been studied in detail, but its specimen mineralogy, which is of particular interest to collectors and curators, is not well recorded. Numerous fascinating mineralogical stories exist as brief asides in scientific papers, scribbled notes in diaries, or simply in the memories of collectors. This article is an attempt to review and illustrate some of the more important recent discoveries, before the information is lost and the specimens scattered. Minerals are fascinating on account of their beauty and rarity, but much of their value lies in the information both historical and scientific that accompanies them. As fine north of England mineral specimens are becoming increasingly scarce it is becoming more and more important to document those already extant in collections.

For the purposes of this article, Northern England is defined as the area of Britain which stretches southward from the Scottish border to include the counties of Northumberland, Cumbria and Durham. For those unfamiliar with the repeated late twentieth century county boundary changes in the British Isles, Cumbria comprises the old counties of Cumberland and Westmorland (both of which commonly appear on old mineral labels) and the Furness district of Lancashire. Durham has also changed shape with the recent introduction of unitary authorities but not in ways that are of particular mineralogical importance.
Northern England includes the Lake District and Northumberland national parks, and many other areas of outstanding natural beauty. The cities of Liverpool, Manchester, Leeds and Newcastle are all within easy reach of the classic specimen-producing areas and all have museums with fine mineral collections. Surprisingly, the only collection of north-of-England minerals on public display in a major city museum in the region is the recently opened gallery at the Manchester Museum.

There are displays of mineralogical interest in a few smaller museums or visitor centres across Northern England. In West Cumbria the heritage centre at Florence Mine gives an insight into the region’s mining past, underground visits are catered for, and there are usually representative mineral specimens available for purchase. Further to the north in the busy market town of Cockermouth, William Creighton has assembled a remarkable private museum which displays almost a thousand local mineral specimens, miner’s lamps, a fluorescent cabinet, and mineralogical and mining ephemera. East along the A66, a large number of artefacts and photographs relating to mining in the Lake District are on display at the Threlkeld Quarry Mining Museum. The displays focus for the most part on the mines, but there is much to interest the mineralogist, including a few fine specimens. In the Pennine Hills, the complex and fascinating Killhope Lead Mining Centre gives an insight into the workings of a large nineteenth-century lead mine. The site easily justifies a full days visit, with its working ore-processing machinery, waterwheels and underground experience. Mention must be made of the Grand Mineralogical Exhibition held at Killhope in September each year. This is one of the best ways to see mineral specimens from many fine private collections in the north Pennines.
41 pages.

Left. A colourless fluorite cube 12 mm on its longest edge with hematite phantoms in one half of the crystal from Florence Mine, Egremont. William Creighton collection.
Right. Superb yellow crystal of campylite, 15 mm across, from Dry Gill Mine. Peter Briscoe collection.

Left. Superb jackstraw cerussite aggregate 90 mm across with typical blue staining from Redburn Mine, Rookhope, Durham. Ian Bruce collection.
Right. Ice blue fluorite with a cubic crystal to 50 mm, collected by Joseph Forster.

Double page spreads from this article.

 

Back to the Top


THE SHAP GRANITE QUARRY,
CUMBRIA

Max M. Wirth
David I. Green

The Shap Granite Quarry, on the eastern flank of the English Lake District, is one of the best known geological localities in Britain. It provides superb exposures of the distinctive and decorative Shap Granite, which are of international significance to research on the origin of granitic bodies and the formation of large feldspar megacrysts. In addition to the rock forming and accessory minerals, which have been described in the geological literature, the Shap Granite hosts a variety of less well known species on mineralised joint planes and in miarolitic cavities. These include bismuth-bearing, rare earth, and supergene minerals which have not been previously documented. We describe these, and summarise the forty or so other mineral species previously recorded from the Shap Granite.
15 pages.
Left. A black anatase crystal 0.8 mm long with well developed steep straited pyramid faces terminated by the pinacoid (001). Collected by Max Wirth
Right. Brown translucent striated brookite crystal with slightly darker phantoms, 0.6 mm in total length, associated with silvery muscovite on pink feldspar. Collected by Max Wirth.
Left. Red to white mottled slightly weathered thick prismatic crystal of bastnasite-(Ce), 0.7 mm in length, in a miarolitic cavity in granite. Collected by Max Wirth.
Right. Transparent bavenite plates to 0.8 mm with pyrite. C. Mike Leppington collection.

  

  Back to the Top