Thus, the foxtail is a type of diaspore or plant dispersal unit. It occurs in association with pyrophyllite, kaolinite, alunite, diaspore, rutile, pyrite, hematite and quartz. Dispersal involves the letting go or detachment of a diaspore from the main parent plant. A diaspore of seed(s) plus fruit is common in plants dispersed by frugivores. Grasses have various units of dispersal&colon; rarely the caryopsis alone, often a diaspore. Sometimes even bracts and bracteoles may belong to the diaspore. Important minerals include diaspore, sulfur and magnesite, pyrophyllite, silica sand and limestone. It is a member of the diaspore group and is trimorphous with manganite and feitknechtite. The seed with its attached elaiosome is collectively known as a diaspore. A common example of the balloon-like diaspore is the "Trifolium fragiferum," or strawberry clover. This type sometimes is called a tumble fruit or diaspore. The two main oxide-hydroxides, AlO(OH), are boehmite and diaspore. Diaspore, along with gibbsite and boehmite, is a major component of the aluminium ore bauxite.