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60 pages, 11colour.
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Harmotome from Pen-y-Clun Mine, Llanidloes, Dyfed, WalesDoug Morgan
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| Chalcopyrite: tarnished replacements of acicular chalcopyrite to 10 mm. Roy Starkey specimen. Photo: Mick Cooper. |
Milltown Quarry is the type locality for sweetite and ashoverite - two of the four known naturally occurring polymorphs of zinc hydroxide, all four of which occur here.
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Litharge pseudomorphs to 1.5 mm. Photo: Mick Cooper. |
The Republic of Ireland has a richly varied geology, is well endowed with
mineral resources, and has been a source of fine mineral specimens for
two centuries or more.
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| Chalcomenite: Ballybunnion, Co. Kerry. Largest spray is ca. 0.5 mm across. Collected by R. Barstow. George Ryeback specimen. Photo: Mick Cooper. |
Held each year on the first weekend in July, France's premier mineral
show, at Ste-Marie-aux-Mines in the Voges Mountains of Alsace, is Europe's
most cosmopolitan mineralogical event.
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| Rhodochrosite: 22 mm. Chacao, Peru. Barras Gauthier Minéraux. Photo: Mick Cooper |
Re-discovery of one of Heddle's zeolite sites at Sgurr nam Boc confirmed
that, although access to the site is difficult, high quality specimens
are still available.
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| Stilbite 40 mm. Photo: John Hall |
Hendre quarry was first visited by the authors in 1984 in search of pectolite and apophyllite, following a lead from a museum specimen. This search was unsuccessful, but instead yielded and interesting suite of minerals including anatase, apatite, brookite, rutile, monazite-(Ce) and xenotime-(Y).
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| Anatase: sceptre crystal 1.5 mm long. Neil Hubbard specimen. Photo: Mick Cooper. |