Results 201 to 210 of about 19,575 (244)

Raman spectroscopic analysis of carbonates on a CY-type carbonaceous chondrite Yamato 980115: unexpectedly abundant terrestrial weathering products. [PDF]

Anal Sci
Urashima SH, Tsuchiya H, Imae N, Yamaguchi A, Yui H.   +4 more
europepmc   +1 more source

Mineralogical characterization and fluorescence properties of blue, yellow and green apatite. [PDF]

RSC Adv
Liang W, Wang N, Gan Y.
europepmc   +1 more source

Lead isotopic evidence for an old and rapid lunar magma ocean. [PDF]

Sci Adv
Zhang YW, Sheng SZ, Wang SJ, Li QL, Hua JX, Li S, Li XH.   +6 more
europepmc   +1 more source

A high-resolution in situ X-ray diffraction study of mineral transitions due to post-hydration heating in CM chondrite meteorites. [PDF]

Earth Planets Space
Jenkins LE, King AJ, Lee MR, Daly L, Thompson SP, Day SJ, Saunders L, Martin PE, Bintang F.   +8 more
europepmc   +1 more source

Primitive asteroids as a major source of terrestrial volatiles. [PDF]

Sci Adv
Martins R, Morton EM, Kuthning S, Goes S, Williams HM, Rehkämper M.   +5 more
europepmc   +1 more source

Evidence of a 4.33 billion year age for the Moon's South Pole-Aitken basin. [PDF]

Nat Astron
Joy KH, Wang N, Snape JF, Goodwin A, Pernet-Fisher JF, Whitehouse MJ, Liu Y, Lin YT, Darling JR, Tar P, Tartèse R.   +10 more
europepmc   +1 more source

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THE CHEMICAL COMPOSITION OF METEORITES

International Geology Review, 1960
At present, investigations on the chemical composition of meteoritic matter are being made in two directions: 1) the determination of the main constituents of meteorites of different classes. (A generalization of these data led to the classification of meteorites depending on their chemical composition); 2) the determination of all the element contents
A. A. Yavnel, M. I. Dyakonova
openaire   +1 more source

Isotopic composition of meteoritic thallium

Earth and Planetary Science Letters, 1969
Thallium contents have been determined as 2.5 ± 0.5 × 10−6 in Ivigtut, Greenland, galena; 7 ± 2 × 10−10 in Plainview chondrite; 1.5 ± 0.3 × 10−9 in Canyon Diablo troilite; and 2.5 ± 0.5 × 10−10 in Canyon Diablo metal. The205Tl/203Tl ratio is identical within about 0.6% of that of terrestrial thallium reagent, thus yielding no indication of extinct ...
R.G. Ostic, H.M. El-Badry, T.P. Kohman
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Nitrogen isotopic compositions of iron meteorites

Geochimica et Cosmochimica Acta, 1993
Iron meteorites analyzed in this study have nitrogen concentrations 70 microg/g or less and delta N-15 from -90 to +150 percent. Although the iron meteorites have a large range of delta N-15, most have values more negative than -50 percent. The nitrogen isotopic compositions were established by cosmochemical processes and were little modified by ...
Carol A Prombo, Robert N Clayton
openaire   +1 more source