allotriomorph
English edit
Etymology edit
Classical compound, Ancient Greek ἀλλότριος (allótrios, “foreign”) + -morph.
Noun edit
allotriomorph (plural allotriomorphs)
- (geology) A mineral that did not develop its otherwise typical external crystal form because of late crystallization between earlier formed crystals, typical of matrix minerals in rapidly crystallizing volcanic lavas and shallow igneous intrusions.