| 释义 |
villarsite Min.|vɪˈlɑːsaɪt|
[a. F. villarsite, f. the name of the French botanist D. Villars (1745–1814): named in 1842 by Dufrenoy.]
A hydrous silicate of magnesium occurring massive or in rounded grains at Traversella, Piedmont.
1846Worcester (citing Dana). 1850Ansted Elem. Geol., Min., etc. §429 Villarsite, silicate of magnesia with iron and manganese. 1855Orr's Circ. Sci., Geol., etc. 511 Villarsite,—Prismatic,..Translucent. Col[our], yellowish-green. 1889A. Irving Metamorphism of Rock 55 Villarsite, which agrees with olivine in crystal form and optical characters, contains 4 to 6.2 per cent. of water. |