LEADHILLS Introduction
- Historical Background |
LEADHILLS Mineral Gallery Links with
photographs (on this page) of - |
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LEADHILLS
& WANLOCKHEAD
Galena - Sphalerite Pyrite - Calcite - Quartz - Barite Pyromorphite - Vanadinite - Descloizite - Minium Caledonite - Leadhillite Lanarkite Veszelyite - Greenockite Hemimorphite Aurichalcite Chalcopyrite - Brochantite - Malachite Site Photos - Quick Facts Map - Species List SITE LINKS Galloway Region Scottish Type Locality Species LOCAL LINKS Wanlockhead &
Leadhills Wanlockhead cottage
to rent Leadhills Reading
Society Lead-Mining Museum,
Wanlockhead |
Once called "Scotland's
Treasure House", Leadhills and Wanlockhead The deposit is also renowned for its rare,
secondary lead species,
Mining Background Mining from the 17th century onwards and peaking in the 19th century, the area finally succumbed to market forces in the early 1950s. Despite a long period of extraction before closure, there are plenty of reserves of lead ore still buried below. Both Leadhills and Wanlockhead mined lead ore, primarily, galena (lead sulphide). They also extracted smaller amounts of copper and zinc from chalcopyrite (copper iron sulphide) and sphalerite (zinc sulphide), which occur throughout the orebody, but are less common than galena. During the years of exploitation, numerous
mines were set up, including some well-known and
important ones such as the Susanna Mine, the Glengonnar
Mine and the New Glencrieff Mine... Following the closure of the last mine in the 1950s, there was a spell of some dereliction. Nevertheless, the small communities are now in a period of growth and development after the active mining era. Forestry and sheep-rearing are important aspects of the present economy as is the Lead-Mining Museum. The former miners' cottages form part of the Wanlockhead Lead-Mining Museum. Open throughout the year, visitors are able to get an insight to the area's important and valuable past. (see link, left) |
CERUSSITE - Leadhills,
Lanarkshire. |
SPHALERITE - New Glencrieff
Mine, Wanlockhead. |
Minerals & Collecting Many of the best specimens the mines are famous for, were unearthed during the peak exploitation period of the 19th century. These are now difficult to obtain and, more often than not, reside in museum collections - not only in the UK but throughout the world. These examples include the main ore species of lead and their associated gangue minerals, in addition to the secondary and type locality minerals derived from these primary ore species. The scarcity of the latter group is mainly a result of the upper oxidized zones not having been mined for over 130 years. Furthermore, dump material from this area was then extensively dug over by the miners in the 1920s. One important find was at Wanlockhead, by a group of collectors in the late 1980s, of the rare, secondary copper-zinc species, veszelyite, which had hitherto never been found at either locality or in Great Britain. Collecting continues in the district (permission is necessary). However, finds are small and limited. |
PYROMORPHITE Pyromorphite occurs commonly throughout the Leadhills & Wanlockhead mining area in a wide variety of forms and colours. Indeed, the area has produced some fine and interesting examples of this mineral species. |
STRAITSTEPS MINE The Museum at Wanlockhead has mining
artifacts on exhibit and tours available, gold-panning
lessons and expeditions. Apart from the attraction of
collecting, Over seventy mineral species have been recorded from the mines. The area is also the type locality for caledonite, chenite, lanarkite, leadhillite, macphersonite, mattheddleite, plattnerite, scotlandite and susannite. All of these minerals are secondary lead species, are very rare and tend to occur as very small crystals. (For a full list of the species recorded
at the deposit, |
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| MINERALIZATION & AGE Mineralization occurs in Ordovician sediments. Faults structurally control, to a large degree, the mineralized veins which tend to decrease in ore grade to the north-west. These veins were mined to depths of over 425 metres (1,300 feet). The age of
mineralization was originally ascribed to However,
more recent studies with age-dating techniques, indicate
all the mineralization took place within the
Carboniferous era, around 350 million years ago The deposit underwent a secondary enrichment at a later stage, producing many of the rare species for which both localities are renowned. |
GOLD & SILVER The surrounding hills in the early days of mining yielded gold of considerable value. In fact, gold was the initial reason for mining in the area. As the supply of gold dwindled, the localities turned their attentions to extracting the rich lead ores beneath them. The source of the gold has not been precisely determined, but it occurs in small veins in the surrounding hills. Gold from the deposit was used to make the Scottish crown in the early, gold extraction period and, more recently, in 1999, was used in the mace for the new Scottish Parliament. Panning for gold is a popular activity of the Lead-Mining Museum and gold-panning contests often take place here. Silver was also extracted from the primary lead ore, galena, at Wanlockhead during the lead-mining period. |
| References & Further
Reading Mineralogical Record UK
Journal of Mines & Minerals © Minerals of Scotland - 2008. |