menilite
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Wikidata facts
- Instance of
- mineral variety
- Subclass of
- opal
- Image
- Menilite opal nodule (Upper Miocene; Pantano Camarillas, Agramón, Spain) 1.jpg
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- Commons category
- Menilite
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Encyclopedic overview
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thumb|right|Menilite thumb|right|Menilite
Menilite is a greyish-brown form of the mineraloid opal. 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, where it occurs as concretions within bituminous Early Oligocene Menilite Shales.
Excerpted from Wikipedia’s “menilite” article, available under the CC BY-SA 4.0 licence.