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630 CTS GEM QUALITY PALLASITE SLAB SERICHO KENYA TBM-2159

592
1

UGS
TBM-2159
Dimensions (mm)
110.000 x 70.000 x 5.000mm
Poids (cts)
630.000
Treatment
No Treatment
Taper
Specimen
Couleurs

Sericho Meteorite

PALLASITE
KENYA
BI COLOURED SHUCKED OLIVINES


The Sericho pallasite meteorite was officially "discovered" in 2016 when some large masses were purchased from villagers in Isiolo County, Kenya. However, the meteorites were known for much longer with tales of the larger masses being played on when villagers were children. Sericho meteorites are found in a strewn field over 45km long with pieces weighing from less than one kilogram to masses as large as 500 kilograms.

The olivine crystals of Sericho are generally rounded and vary in color from gemmy green to orange. The metal-rich areas of the Sericho pallasite show well-developed Widmanstätten patterns. Small individual pieces of the meteorite often show evidence of having been torn apart. Some pieces have patches of remaining fusion crust. The meteorite continues to be collected from the area with over 2.8 tons recovered as of the time it was officially classified.

Modern meteoriticists use the term "pallasite" to describe a certain structural class of stony-iron meteorites that contains abundant silicate inclusions in a nickel-iron matrix. Usually, the silicates are large olivine crystals, often of gem quality. These peridots make the pallasites some of the most attractive meteorites known, and cut and polished pallasite slices are highly coveted among meteorite collectors. Sometimes pallasites and pallasitic peridots are used in jewelry, making them the only genuine cosmic gemstones on Earth.

Based on their origin and formation history, the pallasites are regarded as samples of core/mantle boundary material from differentiated asteroids, inferring that a close relationship exists to the iron meteorites. Upon etching, larger metal portions of polished slices display typical Widmanstätten figures. In addition to this, pallasites display chemical, elemental, and isotopic trends that link them to specific chemical groups of iron meteorites, linking their origin to a common parent body. Hence, they are classified into three distinct groups or grouplets, similar to the chemical groups of the iron meteorites: (1) the main group pallasites, (2) the Eagle Station grouplet, and (3) the pyroxene grouplet.


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630 CTS GEM QUALITY PALLASITE SLAB SERICHO KENYA TBM-2159
Qld, Australia
Propriété de trueblueminerals

  • virginiemillefiori
    virginiemillefiori
    Négatif

    unfortunately the colors in person under artificial or natural light look nothing like the ones posted on the listing. The stone appears very dark blue and it is hard to guess it is a parti sapphire.

  • jadejarrah
    jadejarrah
    Positif

    Paid and shipped - no feedback left after 100 days

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1st Apr 2025

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Les détails d'expédition

Expédition:
$30.00 14 les jours via Standard Shipping - Tracked
Expédié depuis:
Australia

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Aperçu

Type d'inscription : Standard
Identifiant du produit : 2638027
Départs : 27th February 2025 05:31 pm PST
* Tous les prix sont en USD