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A user with 52 edits. Account created on 9 August 2017.
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18 June 2024

  • 16:1816:18, 18 June 2024 diff hist −1 m Libyan desert glass Geologic origin: Changed "or" to "and" in 2nd par. 1st sentence; theories included both ideas, not one or the other. Changed "form of quartz" to "form of silica" in second paragraph. Cristobalite is not a form of quartz; quartz and cristobalite (along with tridymite) are polymorphs of silica. Also changed "higher-temperature mineral called zirconia" to "higher-temperature compound called zirconia" since zirconia does not occur in nature as a mineral species.

7 June 2024

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10 February 2024

7 November 2023

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