Selma chondrite

7 p. : ill. ; 24 cm.Includes bibliographical references (p. 7)

The iron atom as mass unit in meteorites, tektites, and igneous rocks. American Museum novitates ; no. 2216

12 p. ; 24 cm.Includes bibliographical references (p. 10-12)."It is shown that in most meteorites (and even in tektites and igneous rocks) the weight per cent of iron is close to its cation per cent. For example, the total weight per cent of iron in Holbrook is 21.56; the cation per cent of iron in the same stone, as calculated from the analysis, is 21.26. This relationship means that in any piece of Holbrook containing 21 iron atoms- the iron evenly distributed- each iron atom constitutes 1 per cent of the total weight. But if the 21 iron atoms weigh 21 per cent, all the other atoms (the 79 other cations plus oxygen atoms plus sulphur atoms, and so on) weigh 79 per cent- the same as 79 iron atoms. Therefore this whole piece of Holbrook contains the mass of 100 iron atoms. This stoichiometric relationship could be reached in a closed system by a partial splitting into lighter atoms of material consisting mostly of iron. In the case of Holbrook, 79 per cent of the original matter is split up and 21 per cent remains"--P. [1]

Composition and origin of soapstone. /

Academic diss.--Helsingfors.Published also as Geologien Tutkimuslaitos, Bulletin de la Commission géologique de Finlande, n:o 165.Bibliography: p. 56-57

The composition of the Richardton, Estacado, and Knyahinya meteorites. American Museum novitates ; no. 2154

18 p. : ill. ; 24 cm.Includes bibliographical references (p. 16-18)

Descriptions of two meteorites : Karoonda and Erakot. American Museum novitates ; no. 2115

10 p. : 1 ill. ; 24 cm.Includes bibliographical references (p. 9-10)

The composition of the Belly River, Bluff, Bremervörde, and Modoc meteorites. American Museum novitates ; no. 2280

19 p. : ill. ; 24 cm.Includes bibliographical references (p. 18-19).The Belly River meteorite -- The Bluff [Fayette County, Tex.] meteorite -- The Bremervörde meteorite -- The Modoc [Kan.] meteorite

The composition of the Forest City, Tennasilm, Weston, and Geidam meteorites. American Museum novitates ; no. 2220

20 p. : ill. ; 24 cm.Includes bibliographical references (p. 18-20).The Forest City [Iowa] meteorite -- The Tennasilm meteorite -- The Weston [Conn.] meteorite -- The Geidam meteorite

The composition of the Barrata, Carraweena, Kapoeta, Mooresfort, and Ngawi meteorites. American Museum novitates ; no. 2273

25 p. : ill. ; 24 cm.Includes bibliographical references (p. 23-25).The Barratta [N.S.W.] meteorite -- The Carraweena [S. Aust.] meteorite -- The Kapoeta [Sudan] meteorite -- The Mooresfort [Tipperary, Ireland] meteorite -- The Ngawi [Indonesia] meteorite