单词 | vaalite |
释义 | vaaliten. Mineralogy. A variety of vermiculite. ΚΠ 1874 M. H. N. Story-Maskelyne in Q. Jrnl. Geol. Soc. 30 409 Vaalite..occurs in hexagonal prisms, the angles of which are nearly 60° and 120°. 1962 W. A. Deer et al. Rock-forming Minerals III. 246 Many other names (jefferisite, kerrite, protovermiculite, vaalite, etc.) have been used in the past to describe minerals of the vermiculite group. This entry has not yet been fully updated (first published 1916; most recently modified version published online December 2019). < n.1874 |
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