Weight 2 LBS 7 OZ
Size 6.5" x 4.5" approx
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Menilite is a concretion of silica and calcium carbonate often considered a variety of opal.
It forms in nodules of shale and gypsum, which produces these smooth, bulbous forms. Impurities can alter the color, but they typically form in a bright, chalky white.
It was named in 1795 after the Parisian neighborhood of Menilmontant where it was first described by the French geologist Jean-Claude Delametherie. It has since been found to occur in Spain and Japan as well. There aren’t many details known about menilite’s formation and it represents an understudied area of geology. As one of the current limits of known science, Menilite is one of the rarer specimens we’ve been able to feature.
MY Father left me 100's of Rocks & Minerals he searched for an found around the world in his travels, he was a long time collector, the scientific info on the specimens were not left to me so I have put together the most up to date information I can.
Mostly compiled based on being an amateur collector myself, Majority of my seaches have been in Mexico, an the United States occasionally overseas. Many more specimens to come so please add me to your favorites. Many sellers just list the specimen, I always enjoyed knowing as much about the specimen as possible, makes collecting much more enjoyable.
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also sell on many online venues, with great ratings.