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Agfa APX 100, Zeiss Ikon Contessa 35 folding camera, Zeiss hellgelb light yellow filter. Ballard, Seattle, Washington, May, 2014.
Turning the locomotive for the 11:00 back to Ravenglass. Onlookers taking photographs. In my opinion it deserved some mono treatment as it was a little bland in colour
i spent an afternoon at the jardin des plantes and in the town to show some places to friends who are from toulouse.
Novo-Urei
Achondrites, Ureilites
Russia
Fall: 1886
TKW: 1900 g / OBJ: Micro
Novo-Urei - Ureilite
Novo-Urei fell September 4th, 1886, in the village of the same name, in Mordovia, Russia. Although three stones were recovered, two were lost, and only 1.9 kg are now preserved in collections. One of the lost specimens was, reportedly, eaten by the villagers who found it!
Novo-Urei is the type specimen and namesake of the Ureilite achondrite meteorites. Ureilites are unique meteorites of igneous origin, containing FeNi-metal, troilite, clinopyroxene and olivine, with interstitial graphite and diamonds. It was in Novo-Urei, in 1888, that meteoritic diamonds were first discovered.
Ureilite is a rare type of stony meteorite that has a unique mineralogical composition very different from that of other stony meteorites. This dark grey or brownish meteorite type is named after the village Novy Urey (Cyrillic: Новый Урей), Mordovia Republic of Russia, where a meteorite of this type fell on 4 September 1886. Notable ureilites are the Novo Urei and the Goalpara, also named for the town in which it landed (Goalpara, Assam India). On 7 October 2008, tiny asteroid 2008 TC3 entered Earth's atmosphere and exploded an estimated 37 kilometres (23 mi) above the Nubian Desert in Sudan. Fragments of this asteroid were recovered the following December and were found to be ureilite. Scientists have discovered amino acids in meteorite 2008 TC3 where none were expected, taking into account high temperatures reached in the explosion of about 1000 °C.
Composition
A technical name for ureilite would be olivine-pigeonite achondrite. Compared to most other meteorites, ureilites tend to have a high percentage of carbon (average 3% by weight) in the form of graphite and nanodiamonds. The diamonds, which are rarely more than a few micrometres in diameter, are probably the result of high pressure shockwaves produced by collisions of the ureilite parent body with other asteroids. Ureilites can be divided into two subcategories: monomict and polymict. Monomict ureilites are coarse grained with olivine usually more abundant than pyroxene. Polymict ureilites are a mixture of clasts of dissimilar composition.
Origin
Unknown. Some groups of meteorites come from a single object (i.e. Mars, Moon, 4 Vesta), but there has been no parent body found as yet for the ureilites. Prior to impacting Earth, 2008 TC3 was identified as an F-type asteroid.
According to one theory, Ureilites were formed in the interior of a parent body with cumulate crystals that formed crystal layers. Support for this comes from some ureilites in which the grains are aligned in a preferred orientation. Another suggestion is that ureilites represent a residuum of unmelted material after a partial melt liquid was drawn off. Yet other ideas are that they are unprocessed materials which never melted or that they are mixtures of carbonaceous chondrite and basaltic rock melts. It remains unclear whether ureilites originated on different parent bodies or in different regions of a single body. The presence of diamonds, which can form from graphite as a result of severe shock metamorphism, hints at a violent impact history.
Sacsayhuaman is an impressive example of Inca military architecture. So perfectly aligned are the stones that Spanish chroniclers recorded that even a fine knife could not penetrate the joints. No mud mixture was used to bind the stones together. Cusco, Peru.
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