† ˈmesotype Min. Obs.
[a. F. mésotype (Haüy 1801), f. Gr. µέσο-ς middle + τύπος type.]
A name including the minerals now called natrolite, scolecite, mesolite, and thomsonite.
(The form of the crystal is intermediate between those of analcite and stilbite; hence the name.)
| 1804 Edin. Rev. III. 311 The mezotype corresponds to the fibrous and acicular zeolytes. 1815 MacCulloch in Trans. Geol. Soc. III. 86 Mesotype..is found in three states, a compact, a mealy, and a crystallized form. 1852 Th. Ross Humboldt's Trav. II. xvii. 79 Crystals of pyroxene and mesotype. |