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| Andrew G. Tindle and Craig D. Williams 68-72 Baryte replacement by barium carbonate minerals Trevor...series of zeolite minerals. Witherite replacement of baryte has been recognised for a long time in the Northern...orefield. Trevor Bridges and David Green document baryte replacement by barium carbonate minerals and calcite...fluorite and also for excellent specimens of tabular baryte, which occurred in veins and metasomatic replacement...mine. East-west trending baryte-quartz-carbonate veins were worked for baryte in the mid-20 th century |
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| Rumsey 27–34 NOTE An occurrence of euhedral schulenbergite at the Penberthy Croft Mine, Cornwall John...a recent discovery of euhedral crystals of schulenbergite, from the dumps at Penberthy Croft. We then...Pennines, discovered in the supergene zone of the Slitt Vein, at Heights Pasture Mine, Weardale, an area not...memorable field excursion to the Massif Central in France to explore meteor impact sites and the volcanic...Switzerland, with just a few from localities in France, Italy and Austria. The remainder of the collection |
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| Max D. Freier Peter J.Briscoe -------35 ------- VEIN MINERALS OF MANNOCH HILL J. Gordon Todd· Michael}...1insand masses (exceptionally to 10mm) scattered in vein quartz. Crystals to 0.5mm, displaying poorly developed...429]. The occurrence is in a scope on First Sun Vein, about 10-20 metres south of its intersection with...with Hetheringtons Crosscut. At this point the vein walls are encrusted with well-crystallised gypsum...blue coloration of the walls. Namuwite and schulenbergite have been reported by Livingstone et al. (1990) |
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| presence of greenockite was noted in one prehnite vein in the terminal face, and the greenockite-rich band...Saince-Marie-aux-Mines, Alsace. Information: Michael Schwab, 21 Rue de Balderscheim, F-68100 Illzach (Telephone and Fax:...also yields specimens of calcite, chalcopyrite, baryte, gypsum, quartz, and fossil plant remains. GEOLOGY...quartz/calcite veins in the dolerite sill. BARY E BaS04 T Baryte occurs rarely as small cockscomb groups up to 20mm...bisphenoidal crystals to 4mm were found in a quartz/calcite vein. GYPSUM CaS04.2H20 Colourless to orange gypsum |
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| Hubbard and B. Young 115 Witherite from Scaleburn vein , Nenthead, Cumbria, England R . Bunting 118 Vivianite...trench driven across the outcrop of a lead-bearing vein, I collected a good specimen of pyromorphite in...green crystals emplanted on dull white massive baryte . On our third day we visited Hilton mine in the...obtained a good translucent tabular crystal of baryte. On our last day we visited Stamp Hill mine, a...excellent specimens of colourless to white crystalline baryte from the old Cow Green mine in Teesdale. In exchange |
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| Caldbeck Fells, Cumbria: Part 2 The Roughton Gill South Vein on Balliway Rigg David Green, Trevor Bridges, Michael...David Green, Michael Rumsey & Mike Leppington 29 Baryte formation in supergene environments in the Caldbeck...collecting further material, from the screes and in situ vein structures, which may otherwise be lost to future...Trevor Bridges and David Green provide evidence for baryte formation in supergene enviromnents and discuss...CALDBECK FELLS, CUMBRIA: PART 2 THE ROUGHTON GILL SOUTH VEIN ON BALLIWAY RIGG David I. GREEN Manchester Museum |
Baryte vein, Vitrac, Riom, Puy-de-Dôme, Auvergne-Rhône-Alpes, France