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Title: Synthesis of pigeonites for spectroscopic studies
Pigeonite (P21/c clinopyroxene) crystallizes in various terrestrial and extraterrestrial rocks. However, because it breaks down (“inverts”) in slowly cooled rocks, bulk natural samples of pigeonite from coarse-grained rocks are not available. We have synthesized eight samples of pigeonite with compositions of Wo8 and Wo10 [where Wo (mol%) = 100Ca/(Ca+Mg+Fe2+)] and X ranging from 20 to 60 [where X = 100Fe2+/(Mg+Fe2+)]. These samples are suitable for spectroscopic and other studies that require bulk samples. Because of relatively fine grain size (mainly 5–50 mm) and slight grain-to grain variation in composition, they are generally not suitable for studies requiring individual crystals. We will make samples available for appropriate investigations, especially if the techniques used are non-destructive and the samples can be returned after use.  more » « less
Award ID(s):
1725212
PAR ID:
10196692
Author(s) / Creator(s):
; ;
Date Published:
Journal Name:
The American mineralogist
Volume:
104
ISSN:
0003-004X
Page Range / eLocation ID:
615-618
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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