Other
Scientific paper
Mar 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994lpi....25..319d&link_type=abstract
In Lunar and Planetary Inst., The Twenty-Fifth Lunar and Planetary Science Conference. Part 1: A-G p 319-320 (SEE N94-35395 11-9
Other
Cathodoluminescence, Chondrites, Chondrule, Color, Enstatite, Meteoritic Composition, Chromium Oxides, Heating, Magnesium Oxides, Pyroxenes
Scientific paper
Two compositional types of enstatite that emit cathodoluminescence (CL) are known to exist in E3 and E4 chondrites. The first type consists of the most common enstatites that are relatively FeO-poor and emit a red CL. Their CL is apparently activated by the presence of MnO and Cr2O3 in concentrations of 0.2 and 0.6 weight percent. The second type of enstatite is nearly FeO-free, contains no MnO or Cr2O3 and emits a blue CL. The origin of these two types of enstatite and their accompanying chemical and CL differences has long been a subject of discussion. Leitch and Smith first observed to two types and felt the compositional differences were too great to have formed under the same conditions. They postulated the two types of enstatite formed on separate parent bodies and were mixed when these bodies collided. McKinley et al. observed a continuous range of compositions between blue luminescing and red luminescing enstatites and concluded the two types of enstatite formed evidence that blue luminescing pyroxenes were relics that did not completely melt during the heating event which melted other precursor grains, and are distinct from the red CL pyroxene in the chondrules in E chondrites. In order to further clarify the nature and origin of the pyroxene that emits blue CL, the sections listed in another work were examined for the occurrence of blue luminescing enstatite.
Dehart John M.
Lofgren Gary E.
No associations
LandOfFree
The occurrence of blue luminescing enstatite in E3 and E4 chondrites does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The occurrence of blue luminescing enstatite in E3 and E4 chondrites, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The occurrence of blue luminescing enstatite in E3 and E4 chondrites will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1582055