moldavite wikipedia - EAS
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See all on Wikipediahttps://en.wikipedia.org/wiki/MoldaviteMoldavite (Czech: vltavín) is a forest green, olive green or blue greenish vitreous silica projectile glass formed by a meteorite impact probably in southern Germany (Nördlinger Ries Crater) that occurred about 15 million years ago. It is a type of tektite.
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See moreColor: Olive green
Crystal system: Amorphous
Moldavite was introduced to the scientific public for the first time in 1786 as "chrysolites" from Týn nad Vltavou in a lecture by Josef Mayer of Prague University, read at a meeting of the Bohemian Scientific
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See moreIn 1900, Franz Eduard Suess pointed out that the gravel-size moldavites exhibited curious pittings and wrinkles on the surface, which could not
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See moreThe total amount of moldavite scattered around the world is estimated at 275 tons.
There are three grades of moldavite: high quality (often referred to as museum grade), medium quality...
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The chemical formula of moldavite is SiO2(+Al2O3). Its properties are similar to those of other types of glass, and reported Mohs hardness varies from 5.5 to 7. Moldavite can be transparent or translucent with a mossy green color, with swirls and bubbles
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See more• Milan PRCHAL "60 years on the green wave". (Robert Jelinek, Admir Mesic Eds). Der Konterfei 072, Vienna, 2021. ISBN 978-3-903043-59-6
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See moreWikipedia text under CC-BY-SA license- https://en.wikipedia.org/wiki/MoldaviaSee more on en.wikipedia.orgThe original and short-lived reference to the region was Bogdania, after Bogdan I, the founding figure of the principality. The names Moldavia and Moldova are derived from the name of the Moldova River; however, the etymology is not known and there are several variants: 1. A legend mentioned in Descriptio Moldaviae (17…
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- https://www.wikiwand.com/en/Moldavite
Moldavite is a forest green, olive green or blue greenish vitreous silica projectile glass formed by a meteorite impact probably in southern Germany [3] that occurred about 15 million years ago.[4] It is a type of tektite.
- https://mystic.fandom.com/wiki/Moldavite
- Moldavite is a type of olive green tektite that has the lustre of glass. Its unique pittings and wrinkles on the surface resemble characteristic markings found on many meteorites. Moldavite's fusibility is very difficult and has extremely low water content. Its chemical composition suggests that it was formed 15 million years ago by the impact of a...
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