- a sedimentary rock sufficiently rich in phosphate minerals to be used as a source of phosphorus for fertilizers.
Origin of phosphorite
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for phosphorite
Phosphorite is another name for apatite, but is chiefly applied to impure amorphous apatite.
We have already referred in Chapter V. to large deposits of apatite or phosphorite found in Canada.
- a fibrous variety of the mineral apatite
- any of various mineral deposits that consist mainly of calcium phosphate