Earth Science question?

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Earth Science question?

Which of the following compositions in which similar sized atoms may replace one another?
1) Halite 2) Pyroxene 3) Quartz 4) Galena

2006-10-30 15:03:41 · 2 answers · asked by Richard 2 in Science & Mathematics ➔ Earth Sciences & Geology

*HAVE compositions

2006-10-30 15:12:11 · update #1

2 answers

Pyroxene !

2006-10-31 08:02:35 · answer #1 · answered by Geo06 5 · 0⤊ 0⤋

Galena (PbS) sometimes contains silver as AgS. Pyroxene is really a group of minerals, and as such, a lot of substitution takes place. Halite is NaCl, and very littly substitution is possible, although there are associated minerals such as KCl. Quartz is so darned stable that replacements are rarely encountered.

2006-10-30 23:47:01 · answer #2 · answered by David A 5 · 1⤊ 0⤋