Iron Meteorites
Iron meteorites are composed largely of nickel-iron metal, and most
contain only minor accessory minerals. These accessory minerals often
occur in rounded nodules that consist of the iron-sulfide troilite or
graphite, often surrounded by the iron-phosphide schreibersite and the
iron-carbide cohenite. Despite the fact that some iron meteorites contain
silicate inclusions, most have fundamentally the same superficial
appearance.
Presently, iron meteorites are classified under two established systems.
Just a few decades ago, iron meteorites were exclusively classified
according to the macroscopic structures revealed when their polished
surface was etched with nitric acid. Depending on these structures, they
were separated into three classes: octahedrites, hexahedrites, and
ataxites.
GIBEON
Iron fine Octahedrite IVA
Found in 1836 in Namibia
Gibeon Meteorites are classified as octahedrites, a common type
of iron meteorite, and consist entirely of taenite and kamacite, two
different crystalline varieties of a iron-nickel alloy. Taenite (gamma-Fe
with 8-55% Ni) and kamacite (alpha-Fe with 5.5% Ni) form alternating
parallel crystal bands that are arranged in an octahedron pattern.
This pattern is the typical Widmannstatten structure, a
characteristic feature of many meteorites. Besides iron, the main
constituent, the Gibeon Meteorites contain an average of 8% nickel,
0.5% cobalt, 0.04% phosphorus, small amounts of carbon, sulphur,
chromium and copper, and traces of zinc, gallium, germanium and
iridium.
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Gibeon -02
our best full slice available
334gr
SOLD
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Gibeon 00
perfect full slice
284gr
SOLD
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Gibeon 01
large end cut fully crusted + regmaglypts on the
back....
372gr
SOLD
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Gibeon 10
perfect half induvidual with troilite inclusions
620gr
$HOLD
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Gibeon 03
thin slice with crust
18gr
SOLD
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Gibeon 04
thin slice with crust
17.40gr
$75
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Gibeon 05
thin slice with crust
18.02gr
$75
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Gibeon 06
thin slice with crust
9.53gr
$50
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Gibeon 07
thin slice with crust
11.11gr
$50
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Gibeon 08
perfect triangular slice good for mounting....
14.17gr
$75
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Gibeon 09
thin slice with crust
10.33gr
$50
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More slices available, ask for your size !!!
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