Opal var. Menilite (”Liver Opal”) - Paris, Ile-de-France, France Meni
Opal var. Menilite (”Liver Opal”) - Paris, Ile-de-France, France Menilite is a greyish-brown form of 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. The specimen features strange stalactitic and “flown” forms, like wax, which run out from a candle. -- source link
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