monticellite

mon·ti·cel·lite

[mon-tuh-sel-ahyt, -chel-]
noun
a mineral, silicate of magnesium and calcium, CaMgSiO 4 , belonging to the olivine group and often occurring in contact metamorphosed limestones.

Origin:
1825–35; named after T. Monticelli (1758–1846), Italian mineralogist; see -ite1

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monticellite

grayish silicate mineral in the olivine family, calcium and magnesium silicate (CaMgSiO4), that occurs as small crystals or grains in metamorphosed siliceous dolomites, in contact skarn zones (of contact-metamorphic rock rich in iron), and, more rarely, in igneous rocks such as periodotite or nephelinite. For detailed physical properties, see olivine (table)

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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00:10
Monticellite is always a great word to know.
So is interrobang. Does it mean:
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
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