摘要:

Del Rio is a new ataxite from Texas that is not related to either Monahans or Nordheim, the only previously known ataxites from Texas. Del Rio has a nickel content of approximately 12.9 weight percent, apparently has been shocked prior to its fall, and contains minor inclusions of daubreelite, schreibersite and troilite.

ISSN:0026-1114    

DOI:10.1111/j.1945-5100.1977.tb00327.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

摘要:

Nine, possibly ten, stones from northwestern Missouri are known as the Faucett meteorite. These stones are finds, but may be fragments of a large fireball seen in the area in 1907. The meteorite is an olivine‐bronzite chondrite (H4) containing approximately 31% chondrules and 69% matrix. Modal analysis gives: olivine 43%, orthopyroxene 28.3%, oligoclase 5.9%, glass 1.2%, metallic grains (both nickel‐iron and troilite) 19.7%, other minerals and unidentified grains 2.0%. The chemical analysis is typical of modern analyses of H‐group chondrites with a total iron value of 26.59 weight pe

ISSN:0026-1114    

DOI:10.1111/j.1945-5100.1977.tb00328.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

摘要:

The assumption that five men witnessed the formation of the lunar crater Giordano Bruno on June 18, 1178, is analyzed. The difficulties inherent in this interpretation are discussed. The only tenable solution — that of a meteor passing before the moon — is presen

ISSN:0026-1114    

DOI:10.1111/j.1945-5100.1977.tb00329.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

摘要:

The chemical and mineralogical work on meteorites over the period 1800 to 1840 is reviewed. The number of elements known to be present in meteorites rose from six to 19. Chemical techniques advanced rapidly so that by 1815 the procedure was essentially that of modern wet chemical analysts: removal of the magnetic material, dissolution of the acid‐soluble portion and fusion of the remainder with alkali. After Bournon's work in 1802 much mineralogical progress was made during the 1820's, notably by G. Rose. Berzelius made important contributions by his own analyses and synthesis of the work of others. By 1840 ordinary chondrites, carbonaceous chondrites, plagioclase‐pyroxene achondrites, Chassigny, pallasites and octahedrites could all be distingui

ISSN:0026-1114    

DOI:10.1111/j.1945-5100.1977.tb00330.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

摘要:

Several meteorites show variations in natural thermoluminescence intensity with depth. To investigate this, the gamma‐ray induced thermoluminescence of the Plainview, Ucera, and Lost City meteorites has been analyzed. The results show that the thermoluminescence gradients in the meteorites are related to the concentration of electron traps, probably as a result of some of them being produced by cosmic ray bombardmen

ISSN:0026-1114    

DOI:10.1111/j.1945-5100.1977.tb00331.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

ISSN:0026-1114    

DOI:10.1111/j.1945-5100.1977.tb00332.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY

ISSN:0026-1114    

DOI:10.1111/j.1945-5100.1977.tb00333.x

出版商:Blackwell Publishing Ltd    

年代:1977

数据来源: WILEY