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Siderite Pyrrhotin Sphalerite - Magasság: 14 mm - Szélesség: 10 cm- 19 g
Nr. 85463177
Nr. 85463177
Plateau du Tademait 012 28.81794N, 0.92253E
Adrar, Algeria
Find: 2024 Feb
Classification: Ordinary chondrite (H5)
History: Reportedly this material was found in February 2024 in Algeria, and later acquired by Mohamed Ali Loud in Nouadhibou, Mauritania.
Petrography: (K. Metzler, IfP Equilibrated ordinary chondrite with clearly visible chondrules and chondrule fragments. Secondary feldspar grains are mostly µm. High amounts of Fe-Ni metal, slightly oxidized by terrestrial weathering.
Geochemistry: Mineral compositions and geochemistry: Mean olivine composition: Fa18.5±0.2 (Fa18.1-19.0; n=11); mean low-Ca pyroxene composition: Fs16.1±0.3Wo1.1±0.1 (Fs15.6-16.6Wo0.9-1.3; n=11).
Classification: H chondrite based on mineral chemistry. Petrologic type 5 due to the equilibrated state of olivine and pyroxene and grain size of secondary plagioclase.
Shock stage: C-S2
Weathering grade: W1
Classifier: K. Metzler, IfP.
This lot comes with certificate of authenticity.
Thanks for your interest.
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