rock flour

(redirected from Stonemeal)
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Related to Stonemeal: remineralize

rock flour

n.
Finely ground rock particles produced by glacial abrasion.

rock flour

n
(Geological Science) very finely powdered rock, produced when rocks are ground together (as along the faces of a moving fault or during the motion of glaciers) and are thus chemically unweathered
References in periodicals archive ?
A preliminary study of acid volcanic rocks for stonemeal application.
Stonemeal (rocks for crops) (Luz, Lapido-Loureiro, Sampaio, Castilhos, & Bezerra, 2010; Straaten, 2007) is defined as crushed rocks or materials containing naturally occurring soil fertilizers used as a soil amendment.
The use of rocks as alternative sources of potassium in the form of stonemeal, combined with phosphate reagents or even phosphate rocks, whose properties can promote the solubilization of potassium and the release of phosphorus and other nutrients, such as nitrogen, in satisfactory quantities, represents an alternative to the use of commercial fertilizers for use in organic agriculture and to minimize environmental damage caused by mining wastes.