Meteorite**NWA 2737, MARTIAN CHASSIGINITE**0.073 grams lot, ULTRA RARE MARTIAN!!

Description

Hello up for sale is NWA 2737 classified as a MARTIAN CHASSIGINITE! This gorgeous micro fragment lot weighs 0.073 grams, has extremely rare black olivine from being highly shocked and a perfect polish to both sides. This is considered one of the most rare and sought after meteorites ever!!
Chassigny contains noble gas values that are entirely different from those found in other SNC members or in the Martian atmosphere. It is suspected that these gases might originate from the Martian mantle, suggesting a formation for Chassigny within a magma pluton deep inside the Martian crust.
This group is named for its first member, Chassigny, a meteorite that fell in France in 1815. As a witnessed fall that was recovered in the early days of meteoritics, it was one of the first meteorites to be recognized as a genuine rock from space, and it subsequently proved to be one of the most intriguing ones. Chassigny is a cumulate rock, resembling a terrestrial dunite. It consists of about 91% iron-rich olivine, 5% clinopyroxene, 1.7% plagioclase, 1.4% chromite, 0.3% melt inclusions, and other accessory minerals and phases. The melt inclusions contain rare amphiboles, and cracks within Chassigny are filled with carbonate and sulfate salts, indicating a mild pre-terrestrial aqueous alteration. I recently purchased 4 grams of this material from Mark Lyon at the Tucson gem and mineral show 2022, it's extremely expensive and rare! It comes with COA card and display case, thanks for your interest and take care!!
THIS IS ONE OF THE RAREST METEORITES EVER FOUND, MARTIAN METEORITES ARE BECOMING MORE DIFFICULT TO FIND NOWADAYS, 1 OF 3 EVER!!!
Name: Northwest Africa 2737
This is an OFFICIAL meteorite name.
Abbreviation: NWA 2737
Observed fall: No
Year found: 2000
Country: Morocco
Mass: 611 g
This is 1 of 3 approved meteorites classified as Martian (chassignite).
Northwest Africa 2737
Morocco
Find: 2000
Achondrite (Martian, chassignite)
History: In August 2000, meteorite collectors discovered a stone fragmented into nine pieces (308 g, 128 g, 74 g, 47 g, 38 g, 6.4 g, 3.3 g, 2.0 g, and 4.3 g for a total mass of 611 g) in the western part of the Sahara.
Classification: Achondrite (Martian, chassignite); highly shocked.
Specimens: A 20 g type specimen is on deposit at ENSL. B. Fectay and C. Bidaut of La Mémoire de la Terre hold the main mass
CHASSIGNITE
NWA 2737 or "Diderot"
Bruno Fectay & Carine Bidaut
This group is named for its first member, Chassigny, a meteorite that fell in France in 1815. As a witnessed fall that was recovered in the early days of meteoritics, it was one of the first meteorites to be recognized as a genuine rock from space, and it subsequently proved to be one of the most intriguing ones. Chassigny is a cumulate rock, resembling a terrestrial dunite. It consists of about 91% iron-rich olivine, 5% clinopyroxene, 1.7% plagioclase, 1.4% chromite, 0.3% melt inclusions, and other accessory minerals and phases. The melt inclusions contain rare amphiboles, and cracks within Chassigny are filled with carbonate and sulfate salts, indicating a mild pre-terrestrial aqueous alteration.
Chassigny displays a rather typical oxygen isotopic composition, placing it clearly within the SNC field. Its crystallization age of 1.36 billion years and its compositional and elemental trends, indicate a close relationship exists between Chassigny and the nakhlites, and suggests an origin from the same parent magma on Mars. However, Chassigny contains noble gas values that are entirely different from those found in other SNC members or in the Martian atmosphere. It is suspected that these gases might originate from the Martian mantle, suggesting a formation for Chassigny within a magma pluton deep inside the Martian crust.
Four years ago, we brought from Morocco, a black rock, broken in several pieces. This rock was not recognized immediately as a meteorite so we file it with hundreds of other meteorwrongs. It is only last summer, that a fragment was entrusted to scientists and that the true nature of the sample was recognized. Called "Diderot" by the scientists in homage to the 18th century encyclopedist of Langres in France, this meteorite bears today the name of Northwest Africa 2737 (NWA 2737) according to the international nomenclature.
Among the 25000 meteorites known to date, only 33 were torn off on the surface of Mars by violent impacts. These specimens count by the rarest matters on Earth. No other Chassignite have ever been discovered since Chassigny fall in 1815, with NWA 2737, a huge lack have been filled. The total of our unpaired SNC is now 7.
With 611 gr TKW, it is very close to Chassigny known mass. Scientists found that unlike Chassigny, NWA 2737 have been hardly shocked, the pressure was so high that it turned the olivine into black. such a deformation in olivine have never been observed before.