From the geology course I took in 1975: Minerals are naturally occurring crystals of compound. Snow is a mineral, but volcanic glass is not. Rocks are amalgams of minerals and non-minerals.
In corpus linguistics, a collocation is a sequence of words or terms that co-occur more often than would be expected by chance. In phraseology, collocation is a sub-type of phraseme. An example of a phraseological collocation, as propounded by Michael Halliday, is the expression strong tea.
Sample Collocations. There are several different types of collocation. Collocations can be adjective + adverb, noun + noun, verb + noun and so on. Below you can see seven main types of collocation in sample sentences. 1. adverb + adjective. 1  Invading that country was an utterly stupid thing to do.