Technical Specifications

Our Bentonites are rare, natural, non-toxic and environmentally friendly.

Bentonite is included in the group of clay minerals, which typically exhibit absorption and absorption characteristics, which are so useful in industrial and environmental applications.

Bentonite exhibits excellent sealant characteristics for dams and ponds.

At Watheroo, we produce two different products:

Bentonite A is a rare natural semi-granulated clay and is a unique natural mixture of saponite with very finely disseminated calcite and dolomite which contains detailed typical mineralogical and chemical analyses. This material is extremely fine when dispersed in water yielding aproximately 88% passing 1.3 micrometres.

Bentonite E is a high grade beige coloured clay available in substantial quantities with moderate mining and processing costs. It is an ideal material as a precursor for further processing.

Analysis of clays from Watheroo bentonite deposits, April 2012.

Independent laboratory analyses

Analysis

Unit

     “A”

“E ‘d”

“E 's”

Conductivity

dS/m

5.56

3.74

8.36

ECEC

meq/100g

64.54

85.80

95.70

% Clay

%

81.90

83.40

39.02

Coarse sand

%

2.20

4.40

9.44

Fine Sand

%

16.00

9.80

37.39

% Silt

%

< 0.01

2.50

14.15

Note - cation exchange capacity (CEC):

Cation exchange capacity is the ability to hold cations by electrostatic charge and exchange these into solution. It is a measure of the clays ability to hold and exchange cations, including metals.

Cation exchange capacity (CEC) is primarily used as an indicator of soil fertility because it shows the soil's ability to supply three important plant nutrients: calcium, magnesium and potassium.