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Stannern   contributed by Shawn Alan, IMCA 1633   MetBul Link

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View all entries for   Meteorite (7)   Shawn Alan (29)


2 gram slice with fusion crust.   Eucrite-mmict

TKW 52 kg. Observed fall 22 May 1808, Jihomoravsky, Czech Republic.

Shawn writes:
From Stones, Meteortic Encyclopaedia Metropolitana, 1845
Stannern, a small town in Moravia about ninety-two miles from Vienna on the post road to Prague, between half-past five and six A. M. on the 22nd of May, 1808, the air, which had previously been clear, was suddenly obscured by a thick mist. A very loud explosion was then heard, followed by fainter reports and a noise like that of carriages drawn over a rough pavement. These sounds appeared to proceed from a point moving from north-west to south-east, and lasted about eight minutes.

In the meantime a number of stones fell on the ground, scattering themselves over an oval surface about eight English miles and a half long, from north north-west to south south-east, and three miles and a quarter wide, having Stannern for its middle point. They formed three principal groups: one in and about Stannern; another, containing two of the largest stones (sixteen and fourteen pounds) at the north end of the oval; the third, composed of the smallest, at the south end. Hence, as at L'Aigle, the largest stones appear to have fallen first. They were found to be hot a short time after their fall. One of them weighing a little more than four pounds made a hole two feet deep in a newly ploughed field. The number of stones actually gathered amounted to sixty-six, and their joint weight was one hundred and eighteen pounds avoirdupois.

After the first explosion the mist became so dense that objects could not be discerned at the distance of twelve paces. It extended thirty-seven miles to the south, and nearly half that distance in other directions, and did not wholly disappear for four hours. About the time the explosion was heard, a fire-ball emitting sparks and leaving a train of fire behind it was seen from Triesch, four miles to the west of Stannern, and also from the Bohemian frontier, twenty miles to the north.

The stones have a very uneven surface coated with a pitchblack crust. Their interior resembles a fine-grained porous white sandstone traversed by veins of a greyish substance. They contain small quantities of sulphuret of iron and oxide of iron, but no iron in a metallic state, and do not affect the magnetic needle. Their specific gravity varies from 2.95 to 3.16, which is less than that of most other meteoric stones. According to the analysis of Moser, a portion of one of them contained, in 100 parts, silica 46.25 ,lime 12.12, alumina 7.62, magnesia 2.50, STONES, oxide of iron 27, oxide of manganese 0.75, with traces of chrome, water, sulphur, and neutral hydrochlorates.
Source: Google Books


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Graham Macleod
 1/19/2015 6:08:55 PM
Excellent photo's and history Shawn. I totally agree with Dr. Reynolds comments. Cheers M8
Dr. Mike Reynolds
 1/19/2015 7:57:47 AM
Great specimen, Shawn! I also appreciate the history and provenance along with the images.
 

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