Chemical Stone

Graymont mines some of the best limestone deposits available. As a result, the Company can produce a graded limestone that satisfies a wide range of industrial and agricultural specifications

Graymont (NZ) Limited actively manages the manufacture of its products under a Quality Management System certified to the ISO9001:2015 standard.

High Grade Limestone

High grade limestone is manufactured for various applications to rigid standards. Both chemical and physical parameters are measured and monitored on a daily basis.  Product sizes do vary between our sites. 

Dolomitic Limestone

Graymont also mines dolomitic limestone in Australia and can supply chemical-grade dolomitic limestone upon request. 
These products are outlined in more detail on the links provided.

Le saviez-vous ?

On compte trois types distincts de calcaire, qui sont définis en fonction de leur concentration en carbonate de magnésium (MgCO3). Ces types sont dolomitique (35 à 46% MgCO3), magnésien (5 à 35% MgCO3) et calcique (moins de 5% MgCO3).