单词 | framboidal |
释义 | framboidaladj. Geology. Of a mineral: occurring in the form of framboids. Also: marked by the presence of framboids. ΚΠ 1935 Jrnl. Geol. (Chicago) 43 411 Various types of occurrence include..‘framboidal’ clusters with spheroidal outlines, and radial spheroidal masses with or without ‘framboidal’ cores. 1962 Jrnl. Paleontol. 36 1094/1 Framboidal pyrites and the foraminifer Glomospira sp. are abundant in the upper half of the zone. 1979 Science 27 July 395/3 The framboidal texture was controlled by the spherical shape adopted by a cryptocrystalline intermediate reaction product. 2008 W. Chesworth Encycl. Soil Sci. 243/2 Grains of quartz, clay, and carbonates, and in some places framboidal pyrite. This is a new entry (OED Third Edition, September 2011; most recently modified version published online March 2022). < adj.1935 |
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