nontronite
/ˈnɒntrənʌɪt/Mineralogy
noun
A pale yellow or greenish crystalline clay mineral, Na0.33Fe2 3+(Si,Al)4O10(OH)2, belonging to the smectite or montmorillonite group and sometimes resembling opal.
Origin
Mid 19th century; earliest use found in Charles Shepard (1804–1886). From French nontronite from Nontron, the name of the town in Dordogne, France, where the mineral was first found + -ite.
- Montessori
- Montessorian
- Montessorianism
- Montessori, Maria
- Monteverdian
- Monteverdi, Claudio
- Montevideo
- Montez, Lola
- Montezuma II
- Montezuma quail
- Montezuma's revenge
- Montfort, Simon de
- Montgolfier
- Montgomery
- Montgomery, Bernard Law
- Montgomery County
- Montgomery gland
- montgomeryite
- Montgomery, L. M.
- Montgomery's gland
- Montgomeryshire
- Montgomery's tubercle
- month
- month clock
- month-long