| 释义 |
rodingite Petrogr.|ˈrəʊdɪŋaɪt|
[f. the name of the River Roding, S. of Nelson, New Zealand + -ite1.]
A crystalline rock consisting of diallage and grossularite (or hydrogrossularite), often with prehnite and chlorite, and typically found in or adjacent to serpentinite masses, having been formed by the calcium metasomatism of basic or ultrabasic igneous rocks.
1911J. M. Bell et al. in Bull. N.Z. Geol. Survey No. 12. 31 Dykes of a coarse-grained gabbro-like rock penetrate the serpentines in many places... The writers have applied to the rock the name ‘rodingite’, owing to the typical exposure occurring on the River Roding. 1954Mineral. Mag. XXX. 525 (heading) Rodingite from the Girvan-Ballantrae complex, Ayrshire. 1976Neues Jahrb. für Mineral. (Monatshefte) 188 The rodingites described here show an absolute prevalence of garnet, which has a variable composition ranging from an almost pure grossularite..to an intermediate member of the grossularite-andradite series.
Hence rodinˈgitic a.; also ˈrodingitized ppl. a., converted into rodingite; ˈrodingiˌtizing ppl. a., ˌrodingitiˈzation.
1953Jrnl. Faculty of Sci., Hokkaido Univ. 4th Ser. VIII. 419 (heading) On the rodingitic rocks within the serpentinite masses of Hokkaido. 1971Canad. Jrnl. Earth Sci. VIII. 642/2 This subdivision..improved the permeability for rodingitizing fluids. Ibid. 643/1 (caption) Serpentinized and partially rodingitized peridotite. Ibid. 644/1 Development of garnets, hydrogarnets (hibschite), in a process somewhat similar to rodingitization. 1975Contrib. Mineral. & Petrol. XLIX. 233 The latter described rodingitic material in their study of serpentinized ultramafic rocks dredged from the Mid-Atlantic Ridge at 45°N. Ibid., Partially rodingitized olivine gabbros were also found. Ibid. 253 The rodingitization of the gabbroids and the serpentinization of the ultramafics appear to be two concomitant and complementary metasomatic processes. |