Arsenic Native Arsenic with Loellingite
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3DNative Arsenic with Loellingite.
This heavy (and toxic!) lump of naturally occurring arsenic contains a small, light colored inclusion of loellingite, which is FeAs2.
Source: Frank Liebscher
Contributor: Frank Liebscher
Acquired: 28 January, 2004
Price: Donated
Size: 1.25"
Composition: As+FeAs2