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NWA7308 is an LL3 ordinary chondrite from North West Africa, found in 2012. The gigapan comprises 113 images taken on a Nikon D60 using direct eyepiece projection from a Zeiss microscope and luminar objective. The image was put together using PTGUI. ordinary chondrite: A major class of chondrites, distinguished by s...
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- 305
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- 27
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Greisenised granite from Cornwall. Not the prettiest rock, but one for the teaching collection. Some nice feldspar alteration textures here. Greisenisation is alteration assocaited with hydrothermal fluid flow and, in Cornwall, Sn and W mineralisations around granites. 228 images using a Zeiss Luminar lens on a Meiji ...
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- 297
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- 88
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The orthomagamatic sulfide deposit at Kambalda is hosted within komatiitic lavas. These ultramafic rocks are high volume melts and so can include a large amount of metal sulfide, normally a restite phase. Crystallisation of the komatiite melts was assocaited with the development of high supersaturation with respect to ...
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- 303
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View of the main areas of former mining activity in Coppermines Valley. To the right of the image the large spoil heaps from the Bonser ore dressing floors sit close to Church Beck. Spoil heaps from exploitation of the Bonser Vein are on the fells behind. In the centre the spoil heaps from the Paddy End Vein extend up ...
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- 111
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- 1
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The head of the classic U shaped valley of Great Langdale. From the left Crinkle Crags and Bowfell, then the Landale Pikes, with Pike O’Stickle just visble above Loft Crag and Harrison Stickle standing up in the middle of the range. The cliff of Pavey Ark is further right and the top visible on the right hand side of...
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- 91
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Coppermines Valley, near Coniston. The view is from near the path on the SW side of Church Beck. It’s as good a place to walk as any if you’re a geologist into minerals and mineralisation. The area has been mined for copper and quarried for slate. On the right hand side of the image the spoil from quarrying slate a...
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- 140
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A view of the Great Langdale Valley near Oak Howe.
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- 94
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- 22
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Thin section of fine grained talus from a landslip in Glen Dochart, near Crianlarich, Perthshire, Scotland. The diameter of the core shown is 38mm. The thin section is has been photographed under crossed polars. Using the ureolytic bacterium Sporosarcina Pasteurii the loose material has been biocemented by calcite prec...
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- 153
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- 1
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Thin section of a 5mm diameter core of quartz sand which has been cemented using the ureolytic bacterium Sporosarcina Pasteurii. Porosity is picked out by blue dyed epoxy. The photographs have been taken using crossed polars. The loose material has been biocemented by calcite precipitation induced by the bacteria durin...
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- 125
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- 1
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Thin section of a 5mm diameter core of quartz sand which has been cemented using the ureolytic bacterium Sporosarcina Pasteurii. Porosity is picked out by blue dyed epoxy. The loose material has been biocemented by calcite precipitation induced by the bacteria during ureolysis. Calcite crystals can be seen as small gra...
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- 121
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- 1