Stone meteorite NWA 15523 - 0.078 grams

Northwest Africa 15523 (NWA 15523) – Exceptional CM2 Carbonaceous Chondrite

NWA 15523 is a stunning specimen of a CM2 carbonaceous chondrite, one of the rarest and most scientifically valuable meteorite classifications. This meteorite, reportedly found in early 2022 in Hassi Khebi, Algeria, offers a glimpse into the early solar system and the materials that contributed to planetary formation.

Key Details:

• Type: Carbonaceous chondrite (CM2)
• Discovery Location: Hassi Khebi, Algeria (Northwest Africa)
• Date of Purchase: May 2022
• Weight if the sample: 0.078 grams
• Size of the sample: 5x5x3 mm

Petrographic Features:

• The meteorite’s structure includes chondrules, chondrule fragments, calcium-aluminum-rich inclusions (CAIs), and PCP (primary carbon phase or TCI particles), all embedded in a fine-grained black matrix that makes up approximately 50% of the meteorite’s volume.
• The majority of chondrules are of chemical type I, with sizes ranging between 50–300 µm, and a few reaching up to 1.5 mm. Many are coated in a fine dust mantle, enhancing the visual and scientific intrigue.
• Accessories include troilite, pentlandite, and calcite, minerals that are crucial for understanding the meteorite’s origin and thermal history.

Geochemical Composition:

• Olivine composition: Fa₇.₂±₁₂.₁ (range: Fa₀.₃–40.7, n=13)
• Low-Ca pyroxene composition: Fs₁.₄±₀.₇ Wo₂.₄±₁.₈ (range: Fs₀.₇–2.7, Wo₀.₉–5.7, n=10)

Classification:

This meteorite is classified as a CM2 carbonaceous chondrite, based on its CAIs, PCP particles, small chondrule sizes, chondrule-matrix ratio, and mineral chemistry. CM2 chondrites are particularly prized for their organic compounds and hydrated minerals, providing insights into the chemistry of the early solar system.

Why Choose NWA 15523?

NWA 15523 is more than just a meteorite—it’s a piece of cosmic history. Its pristine condition and unique features make it an essential addition for collectors, researchers, or anyone with a passion for the mysteries of space. Owning this meteorite is like holding the building blocks of planets in your hand.