Journal ArticleDOI
The matrices of unequilibrated ordinary chondrites: Implications for the origin and history of chondrites
TLDR
The fine-grained, opaque, silicate matrix of type 3 unequilibrated chondrites was examined by optical microscopy, an electron microprobe, and a scanning electron microscope as mentioned in this paper.About:
This article is published in Geochimica et Cosmochimica Acta.The article was published on 1981-01-01. It has received 225 citations till now. The article focuses on the topics: Chondrule & Chondrite.read more
Citations
More filters
Journal ArticleDOI
The origin and evolution of chondrites recorded in the elemental and isotopic compositions of their macromolecular organic matter
TL;DR: In a survey of the elemental and isotopic compositions of insoluble organic matter (IOM) from 75 carbonaceous, ordinary and enstatite chondrites, this article found dramatic variations within and between chondrite classes.
Journal ArticleDOI
Presolar diamond, sic, and graphite in primitive chondrites : abundances as a function of meteorite class and petrologic type
Gary R. Huss,Roy S. Lewis +1 more
TL;DR: In this article, diamond and SiC were found in unmetamorphosed members of all seven chondrite classes and evidence for graphite was found in Orgued (CI) and LL3.1 chondrites.
Thermal Metamorphism in Chondrites
TL;DR: In this paper, the authors summarize metamorphic changes in chondritic meteorites and discuss temperatures, oxidation states, and possible heat sources for metamorphism, and discuss the conditions under which chondrites originally formed.
Journal ArticleDOI
The onset of metamorphism in ordinary and carbonaceous chondrites
TL;DR: In this paper, a variety of metamorphic effects were noted and subjected to detailed analysis using electron microprobe, scanning electron microscopy (SEM), TEM, and cathodoluminescence (CL) methods.
Book ChapterDOI
Chondrites and Their Components
Edward Scott,Alexander N. Krot +1 more
TL;DR: In this article, the properties of carbonaceous, ordinary and enstatite chondrites focusing on the most pristine samples are reviewed to establish the chemical, isotopic, and mineralogical properties and origins of their components and to elucidate the asteroidal processes that modified them.
References
More filters
Journal ArticleDOI
Empirical Correction Factors for the Electron Microanalysis of Silicates and Oxides
A. E. Bence,Arden L. Albee +1 more
TL;DR: In this paper, the calibration curve in a binary metal alloy system can, within the variance of data points, be described by the linear expression $$C_{A}/K{A} = \alpha_{AB} + (1 - α_{AB})C{A]$$, where C is the concentration of element A in alloy  relative to pure A, and K is the background-corrected intensity of a characteristic radiation line of A in the alloy relative to that of pure A. This linear variation of the correction factor with composition can be extended to multicomp
Journal ArticleDOI
A chemical-petrologic classification for the chondritic meteorites.
W. R. Van Schmus,John A. Wood +1 more
TL;DR: In this article, a two-dimensional classification grid based on chemical and petrologic subdivisions of chondritic meteorites is proposed, which extends the current chemical subdivisions to account for varying petrolic (implied metamorphic) properties within the primary chemical groups.
Journal ArticleDOI
Correction factors for electron probe microanalysis of silicates, oxides, carbonates, phosphates, and sulfates
Arden L. Albee,Lily. Ray +1 more
Journal ArticleDOI
Chemical fractionations in meteorites—II. Abundance patterns and their interpretation
John W Larimer,Edward Anders +1 more
TL;DR: In this article, the abundance of thirty-one volatile elements in meteorites is reviewed, and it is shown that carbonaceous chondrites are a mixture of two types of material: a low-temperature fraction (matrix) that retained most of its volatiles and a high temperature fraction (chondrules, metal grains) that lost them.
Journal ArticleDOI
Chemical fractionations in meteorites—III. Major element fractionations in chondrites
John W Larimer,Edward Anders +1 more
TL;DR: In this paper, the major constituents of chondritic matter are fractionated among the several chondrite classes in the solar nebula, starting from material of carbonaceous chondrites composition.
Related Papers (5)
A survey of the unequilibrated ordinary chondrites
A chemical-petrologic classification for the chondritic meteorites.
W. R. Van Schmus,John A. Wood +1 more