Nev. Admin. Code § 534.194 - "Sodium bentonite" defined
"Sodium bentonite" means a colloidal clay that:
1. Consists primarily of the weathered volcanic clay mineral montmorillonite where sodium is the predominant, exchangeable cation;
2. Has the ability to swell; and
3. Is easily hydrated when mixed with fresh water to form bentonite drilling fluids or bentonite grout.
Notes
NRS 534.020, 534.110
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