This paper presents the metadata schema for the description of language resources and technologies (LRTs) currently under development for the needs of META-SHARE, an open distributed facility for the exchange and sharing of LRTs The description of LRTs is granular and abstractive, combining the taxonomy of LRTs with an inventory of a structured set of descriptive elements, of which only a minimal subset is obligatory. The schema also proposes recommended and optional elements, while it includes a set of relations for the linking of resources with other resources and with related material. The current paper presents the main principles of the metadata schema, focusing on the description of text corpora.