Menilite
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Menilite is a greyish-brown form of the mineraloid opal.[1] It is also known as liver opal or leberopal (German), due to its color. It is called menilite because it was first described from Ménilmontant (Paris), France,[1] where it occurs in concretions of Tertiary shale.
[edit] See also
[edit] References
- ^ a b http://www.mindat.org/min-9796.html Mindat.org
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