MOLDAVITE * 4.4 grams !!! Vrabce, CZECH REPUBLIC

Description

MOLDAVITE
* fine surface, fine color *
* rare green variety of tektites *
size: 27 X 17 X 9mm
weight: 4.4g
7D2
origin:
Vrábče - Sand pit, South Bohemia Region, Czech Republic
Moldavite's bottle-green glass color led to its being commonly called Bouteillen-stein, and at one time it was regarded as an artificial product, but this view is opposed to the fact that no remains of glassworks are found in the neighborhood of its occurrence; moreover, pieces of the substance are widely distributed in Tertiary and early Pleistocene deposits in Bohemia and Moravia. For a long time, it was generally believed to be a variety of obsidian, but its difficult fusibility and its chemical composition are rather against its volcanic origin.
F. E. Suess pointed out that the nodules or small masses of moldavite presented curious pittings and wrinkles on the surface, which could not be due to the action of water, but resembled the characteristic markings on many meteorites. Boldly attributing the material to a cosmic origin, he regarded moldavite as a special type of meteorite for which he proposed the name of tektite. To this type are also referred the so-called obsidian bombs and buttons from Australia and Tasmania, known sometimes as australites, and called by R. H. Walcott obsidianites. Similar bodies have been found in Indonesia and have been termed billitonite, from the isle of Belitung where they occur in tin-bearing gravels. Usually they are flat, rounded or ellipsoidal bodies, sometimes surrounded by an equatorial girdle or rim, and often with a brilliant black superficial luster, as though varnished.
It is also widely argued that the moldavite glass was formed 15 million years ago during the impact of a giant meteorite in present-day Nördlinger Ries. Splatters of rocks that were melted by the impact cooled while they were actually airborne and most fell in south Bohemia - traversed by Vltava river (German: Moldau).
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